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16688results about How to "High porosity" patented technology
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Irrigation and drainage based on hydrodynamic unsaturated fluid flow
InactiveUS6918404B2Improve the level ofHigh porosityPipeline systemsMachines/enginesEnvironmental engineeringPorous microstructure
Irrigation and drainage systems are disclosed, including a saturated zone and at least one pipe in communication with the saturated zone. The pipe(s) can be configured to comprise a tubarc porous microstructure for conducting water from the saturated zone to an unsaturated zone in order to drain the water from the saturated zone. The water can be delivered from the saturated zone to the unsaturated zone through the tubarc porous microstructure, thereby permitting the water to be harnessed for irrigation or drainage through the hydrodynamic movement of the water from one zone of saturation or unsaturation to another.
Owner:TUBARC TECH
Composite self-cohered web materials
The present invention is directed to implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.
Owner:WL GORE & ASSOC INC
Composite self-cohered web materials
InactiveUS20070026040A1High porositySuitable for useSurgical staplesProsthesisPorosityUltimate tensile strength
The present invention is directed to implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.
Owner:WL GORE & ASSOC INC
Composite self-cohered web materials
InactiveUS20070026039A1High porositySuitable for useAntipyreticAnalgesicsBiomedical engineeringPorosity
The present invention is directed to implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.
Owner:WL GORE & ASSOC INC
Hybrid biologic-synthetic bioabsorbable scaffolds
ActiveUS8366787B2Increase surface areaGood mechanical integritySuture equipmentsBone implantBioabsorbable scaffoldCell-Extracellular Matrix
A bioprosthetic device is provided for soft tissue attachment, reinforcement, and or reconstruction. The device comprises a naturally occurring extracellular matrix portion and a three-dimensional synthetic portion. In illustrated embodiments, the naturally occurring extracellular matrix portion comprises layers of small intestine submucosa, and the three-dimensional synthetic portion comprises a foam or a three-dimensional mesh, textile, or felt.
Owner:DEPUY SYNTHES PROD INC
Cartilage repair implant with soft bearing surface and flexible anchoring device
InactiveUS9050192B2Strong and more permanent fixationSoft and bendableJoint implantsHip jointsCartilage repairSurgical implant
A surgical implant for replacing hyaline cartilage in a knee or other articulating synovial joint has an anchoring side on one side of the implant adapted for fixing the implant to one of the bones in the joint, and a bearing surface on the opposite side of the implant for lubricious rubbing and sliding contact with another bone in the joint. The anchoring side can be configured with an irregular surface for tissue ingrowth. The bearing side can include hydrogel. The implant can be rolled up from an original shape and surgically inserted by arthroscopic means, and opens into its original shape when released inside the joint.
Owner:FORMAE
Polymerization catalysts for producing high melt index polymers without the use of hydrogen
ActiveUS7026494B1High porositySilicon organic compoundsOrganic-compounds/hydrides/coordination-complexes catalystsPolyolefinHydrogen
Various catalyst compositions including the contact product of at least one ansa-metallocene compound, at least one organoaluminum compound, and at least one activator-support are disclosed. Processes for forming such compositions and for forming polyolefins with such compositions are also disclosed. Metallocene compounds are also presented.
Owner:CHEVRON PHILLIPS CHEMICAL CO LP
Laser-produced porous surface
ActiveUS7537664B2Decrease in densityIncrease porosityMolten spray coatingJoint implantsLayer wisePorosity
A method of fabricating a porous or partially porous three-dimensional metal article for use as a tissue ingrowth surface on a prosthesis. The porous article is formed using direct laser remelting in a cross section of a layer of metallic powder on a build platform without fusing thereto. The power, speed, spot size and beam overlap of the scanning laser is coordinated so that a predetermined porosity of the metallic powder can be achieved. Laser factors also vary depending from the thickness of the powder layer, type of metallic powder and size and size distribution of the powder particles. Successive depositing and remelting of individual layers are repeated until the article is fully formed by a layer-by-layer fashion. In an additional embodiment, a first layer of metallic powder may be deposited on a solid base or core and fused thereto.
Owner:UNIV OF LIVERPOOL +1
Rigid porous carbon structures, methods of making, methods of using and products containing same
InactiveUS6099965AHigh accessible surface areaHigh activityPigmenting treatmentMaterial nanotechnologyFiberPorous carbon
This invention relates to rigid porous carbon structures and to methods of making same. The rigid porous structures have a high surface area which are substantially free of micropores. Methods for improving the rigidity of the carbon structures include causing the nanofibers to form bonds or become glued with other nanofibers at the fiber intersections. The bonding can be induced by chemical modification of the surface of the nanofibers to promote bonding, by adding "gluing" agents and / or by pyrolyzing the nanofibers to cause fusion or bonding at the interconnect points.
Owner:HYPERION CATALYSIS INT
Medical devices and applications of polyhydroxyalkanoate polymers
InactiveUS6867247B2Reduce probabilityHigh porositySuture equipmentsStentsTissue repairBiocompatibility Testing
Devices formed of or including biocompatible polyhydroxyalkanoates are provided with controlled degradation rates, preferably less than one year under physiological conditions. Preferred devices include sutures, suture fasteners, meniscus repair devices, rivets, tacks, staples, screws (including interference screws), bone plates and bone plating systems, surgical mesh, repair patches, slings, cardiovascular patches, orthopedic pins (including bone filling augmentation material), adhesion barriers, stents, guided tissue repair / regeneration devices, articular cartilage repair devices, nerve guides, tendon repair devices, atrial septal defect repair devices, pericardial patches, bulking and filling agents, vein valves, bone marrow scaffolds, meniscus regeneration devices, ligament and tendon grafts, ocular cell implants, spinal fusion cages, skin substitutes, dural substitutes, bone graft substitutes, bone dowels, wound dressings, and hemostats. The polyhydroxyalkanoates can contain additives, be formed of mixtures of monomers or include pendant groups or modifications in their backbones, or can be chemically modified, all to alter the degradation rates. The polyhydroxyalkanoate compositions also provide favorable mechanical properties, biocompatibility, and degradation times within desirable time frames under physiological conditions.
Owner:TEPHA INC
Wet crepe, impingement-air dry process for making absorbent sheet
InactiveUS6432267B1Reduce penetrationIncrease flexibilityDrying using combination processesNon-fibrous pulp additionPulp and paper industryPaper sheet
A wet crepe, impingement-air dried process for producing absorbent paper sheet is disclosed. In preferred embodiments, the process utilizes recycle furnish and the web is delaminated as it is wet-creped from a Yankee dryer. Particular embodiments include high consistency (after-crepe) wet-shaping prior to impingement air drying on a drilled vacuum roll.
Owner:GPCP IP HLDG LLC
Dosage form having first and second coats
A dosage form comprising a composition comprising a drug surrounded by a first coat and a second coat with an exit for administering the drug to a patient; and a method of using the dosage form are disclosed for an indicated therapy.
Owner:ALZA CORP
Recyclable metathesis catalysts
ActiveUS6921735B2Highly efficient mannerReadily isolableOrganic chemistry methodsCarboxylic acid esters preparationEtherCoordination complex
Highly active, recoverable and recyclable transition metal-based metathesis catalysts and their organometallic complexes including dendrimeric complexes are disclosed, including a Ru complex bearing a 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene and styrenyl ether ligand. The heterocyclic ligand significantly enhances the catalytic activity, and the styrenyl ether allows for the easy recovery of the Ru complex. Derivatized catalysts capable of being immobilized on substrate surfaces are also disclosed. The present catalysts can be used to catalyze ring-closing metathesis (RCM), ring-opening (ROM) and cross metatheses (CM) reactions, and promote the efficient formation of various trisubstituted olefins at ambient temperature in high yield.
Owner:BOSTON COLLEGE
Strontium feldspar aluminum titanate for high temperature applications
InactiveUS6620751B1Improve stabilityReduce bloatInternal combustion piston enginesDispersed particle filtrationMicrometerRoom temperature
A structure for use in high temperature applications and including a porous ceramic material consisting essentially of about 50-90 percent by weight iron or magnesium stabilized aluminum titanate (AlTiO5) and about 10-50 percent by weight strontium feldspar (SrO.Al2O3.2SiO2), and having a coefficient of thermal expansion over a temperature range from room temperature to 1000° C. of about -10x10-7 / ° C. to +15x10-7 / ° C., a heat capacity at 500° C. greater than 3.2 J / cm3K, a porosity of about 15-50 percent by volume, preferably 40-50 percent by volume, and a median pore size of about 5-50 micrometers, preferably 8-15 micrometers. The structure is especially useful as a diesel exhaust particulate filter.
Owner:CORNING INC
Hip prosthesis with monoblock ceramic acetabular cup
InactiveUS7695521B2High strengthImprove toughnessBone implantJoint implantsRight femoral headMetallic materials
An improved hip prosthesis includes an acetabular cup bearing component constructed from a relatively hard and high strength ceramic material for articulation with a ball-shaped femoral head component which may be constructed from a compatible ceramic or metal material. In one form, the acetabular cup further includes a ceramic porous bone ingrowth surface adhered thereto for secure ingrowth attachment to natural patient bone.
Owner:AMEDICA A DELAWARE
Porous implant structures
InactiveUS20120215310A1High porosityHigh strengthAdditive manufacturing apparatusSurgical adhesivesNODALManufacturing technology
Porous biocompatible structures suitable for use as medical implants and methods for fabricating such structures are disclosed. The disclosed structures may be fabricated using rapid manufacturing techniques. The disclosed porous structures has a plurality of struts and nodes where no more than two struts intersect one another to form a node. Further, the nodes can be straight, curved, portions that are curved and / or straight. The struts and nodes can form cells which can be fused or sintered to at least one other cell to form a continuous reticulated structure for improved strength while providing the porosity needed for tissue and cell in-growth.
Owner:SMITH & NEPHEW INC
Systems and methods for detaching a covering from an implantable medical device
InactiveUS6846316B2Enhance blood porosityEnhance its distensabilityStentsInfusion syringesProsthesisMedical device
Owner:TRW INC +2
System and method for healing a wound at a tissue site
Provided herein is a system and method for facilitating removal of a drape from a tissue site. One aspect provides a system comprising a drape, and adhesive layer, and a release agent, where the system is adapted to be coupled to a tissue site and released therefrom upon or after exposure to an external stimulus. Another aspect provides a method for application and removal of a drape using less force than required with a conventional drape.
Owner:3M INNOVATIVE PROPERTIES CO
Composite self-cohered web materials
ActiveUS20070026031A1High porositySuitable for useWoven fabricsThin material handlingPorosityEngineering
The present invention is directed to implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.
Owner:WL GORE & ASSOC INC
Expandable fluoropolymer device for delivery of therapeutic agents and method of making
Owner:ATRIUM MEDICAL
Zirconium Phosphate Particles Having Improved Adsorption Capacity and Method Of Synthesizing The Same
InactiveUS20100084330A1Avoid disadvantagesHigh porosityPhosphatesDialysis systemsPhosphoric acidOxygen
Zirconium phosphate particles are synthesized by providing a solution of zirconium oxychloride in an aqueous solvent, adding at least one low molecular weight, oxygen containing, monofunctional, organic additive to the solution, and combining this solution with heated phosphoric acid or a phosphoric acid salt to obtain zirconium phosphate particles by sol gel precipitation.
Owner:FRESENIUS MEDICAL CARE HLDG INC
Implant scaffold combined with autologous or allogenic tissue
InactiveUS20050209705A1Reduce and prevent immune responseReducing and preventing inflammationBone implantJoint implantsComposite Tissue AllograftAutologous tissue
This invention provides implants comprising tissue having an intercellular matrix anchored to a biocompatible scaffold. The intercellular matrix of the tissue provides a natural medium to facilitate the healing and growth of damaged tissue in a patient. The present invention provides methods of treating damaged tissue in a patient by inserting such implants into the damaged tissue. The implants of the present invention include implants comprising allogenic and / or autologous tissue. The tissue may also be acellular.
Owner:OSTEOBIOLOGICS
Filter element and method
InactiveUS20090044702A1Life of element can be lengthenedIncrease capacityCombination devicesNon-fibrous pulp additionMultiple formsParticulates
A filter element having multiple formed layers of filtration media is disclosed. The media are layered so as to form a pore size gradient. The filter element is capable of removing both solid and liquid particulates from a moving fluid stream. The filter element has high strength and compressibility. The layers can be supported on a porous or perforate support to provide mechanical stability during filtering operations. The filtration media layers can be formed into various filter element forms such as panels, cartridges, inserts, and the like.
Owner:DONALDSON CO INC
Aerogel heat insulation composite material and its preparing method
The heat insulating composite aerogel material consists of silica aerogel, titania as infrared opacifier and reinforcing fiber in the weight ratio of 1 to 0.1-0.7 to 0.7-3. Its preparation process includes compounding sol with silanolate, surface modifier, titanolate, alcohol solvent, acid catalyst and alkaline catalyst in certain proportion; soaking fiber felt or prefabricated fiber part in the sol; and supercritical fluid drying. The material of the present invention has high blocking effect on solid heat transfer, air heat transfer and infrared radiation heat transfer, excellent hydrophobicity, simple preparation process, low cost, mechanical strength over 2 MPa, and wide application range, and may be used in strict heat protection condition in aeronautics, astronautics, military and civil uses.
Owner:NAT UNIV OF DEFENSE TECH
Mullite-aluminum titanate diesel exhaust filter
InactiveUS6849181B2High porosityLarge apertureIron oxides/hydroxidesExhaust apparatusFiltrationMullite
The invention is directed at a mullite-aluminum titanate porous diesel particulate filter constituting a porous ceramic body containing, expressed in terms of weight percent of the total body, of 60-90%, preferably 70-80%, most preferably 70% iron-aluminum titanate solid solution having a stoichiometry of Al2(1−x)Fe2xTiO5, where x is 0-0.1, and 10-40%, preferably 20-30%, most preferably 30% mullite (3Al2O3.2SiO2), and consists essentially, expressed in terms of weigh percent on the oxide basis, of 3 to 15% SiO2, 55 to 65% Al2O3, 22 to 40% TiO2, and 0 to 10% Fe2O3, and being useful for filtration of diesel exhaust. The inventive diesel particulate filter exhibits high interconnected open porosity and large median pore size, in combination with high permeability when fired to a temperature of between 1650° to 1700° C., along with high thermal shock resistance and good filtration capability.
Owner:CORNING INC
Rigid porous carbon structures, methods of making, methods of using and products containing same
InactiveUS6432866B1High accessible surface areaHigh activityMaterial nanotechnologyLayered productsFiberPorous carbon
Owner:HYPERION CATALYSIS INT
Battery structures, self-organizing structures and related methods
InactiveUS7579112B2Maximizes electrode interface areaDistance minimizationFinal product manufactureElectrode carriers/collectorsElectrical batteryCurrent collector
An energy storage device includes a first electrode comprising a first material and a second electrode comprising a second material, at least a portion of the first and second materials forming an interpenetrating network when dispersed in an electrolyte, the electrolyte, the first material and the second material are selected so that the first and second materials exert a repelling force on each other when combined. An electrochemical device, includes a first electrode in electrical communication with a first current collector; a second electrode in electrical communication with a second current collector; and an ionically conductive medium in ionic contact with said first and second electrodes, wherein at least a portion of the first and second electrodes form an interpenetrating network and wherein at least one of the first and second electrodes comprises an electrode structure providing two or more pathways to its current collector.
Owner:A123 SYSTEMS LLC +1
Expandable fluoropolymer device for delivery of therapeutic agents and method of making
A method of making a radially expandable fluid delivery device includes providing a tube of biocompatible fluoropolymer material with a predetermined porosity based on an extrusion and expansion forming process, applying a radial expansion force to the tube expanding the tube to a predetermined diameter dimension, and removing the radial expansion force. The tube is radially inelastic while sufficiently pliable to be collapsible and inflatable from a collapsed configuration to an expanded configuration upon introduction of an inflation force, such that the expanded configuration occurs upon inflation to the predetermined diameter dimension. The fluid delivery device is constructed of a microporous, biocompatible fluoropolymer material having a microstructure that can provide a controlled, uniform, low-velocity fluid distribution through the walls of the fluid delivery device to effectively deliver fluid to the treatment site without damaging tissue proximate the walls of the device.
Owner:ATRIUM MEDICAL
Low platinum fuel cells, catalysts, and method for preparing the same
InactiveUS20060172179A1Efficient processingImprove throughputMaterial nanotechnologyConductive materialFiberCarbon fibers
This invention provides novel fuel cell electrodes and catalysts comprising a series of catalytically active thin-film metal alloys with low platinum concentration supported on nanostructured materials (nanoparticles). Processing of the electrodes and catalysts can include electrodeposition methods, and high-pressure coating techniques. In certain embodiments, an integrated gas-diffusion / electrode / catalyst layer can be prepared by processing catalyst thin films and nanoparticles into gas-diffusion media such as Toray or SGL carbon fiber papers. The catalysts can be placed in contact with an electrolyte membrane for PEM fuel cell applications.
Owner:INTEMATIX
Process for production of nanoparticles and microparticles by spray freezing into liquid
InactiveUS6862890B2Improve efficiencyImprove efficacyPowder deliveryNervous disorderPorosityNanoparticle
The present invention provides a system and a method for the production of microparticles and nanoparticles of materials that can be dissolved. The system and method of the present invention provide quicker freezing times, which in turn produces a more uniform distribution of particle sizes, smaller particles, particles with increased porosity and a more intimate mixing of the particle components. The system and method of the present invention also produce particles with greater surface area than conventional methods. One form of the present invention provides a method for the preparation of particles. An effective ingredient is mixed with water, one or more solvents, or a combination thereof, and the resulting mixture is sprayed through an insulating nozzle located at or below the level of a cryogenic liquid. The spray generates frozen particles.
Owner:BOARD OF RGT THE UNIV OF TEXAS SYST
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