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415results about How to "Maintain activity" patented technology

Layered SOx tolerant NOx trap catalysts and methods of making and using the same

The present invention relates to a layered catalyst composite useful for reducing contaminants in exhaust gas streams, especially gaseous streams containing sulfur oxide contaminants. More specifically, the present invention is concerned with improved catalysts of the type generally referred to as “three-way conversion” catalysts. The layered catalysts trap sulfur oxide contaminants, which tend to poison three-way conversion catalysts used to abate other pollutants in the stream. The layered catalyst composites of the present invention have a sulfur oxide absorbing layer before or above a nitrogen oxide absorbing layer, and / or normal three-way catalytic layers. The layered catalyst composite comprises a first layer and a second layer. The first layer comprises a first support and at least one first platinum component. The second layer comprises a second support and a SOx sorbent component after forming its reaction product with SOx having a free energy of formation from about 0 to about −90 Kcal / mole at 350° C. The sulfur oxide absorbing layer selectively and reversibly absorbs sulfur oxides over nitrogen oxides and prevents or alleviates sulfur oxide poisoning of the nitrogen oxide trap.
Owner:ENGELHARD CORP

Heart-lung preparation and method of use

An isolated heart or heart-lung preparation in which essentially normal pumping activity of all four chambers of the heart is preserved, allowing for the use of the preparation in conjunction with investigations of electrode leads, catheters, ablation methods, cardiac implants and other medical devices intended to be used in or on a beating heart. The system can be designed to be used within a Magnetic Resonance Imaging (MRI) unit or a X-ray computed tomography (CT) scanner. The preparation may also be employed to investigate heart and lung functions, in the presence or absence of such medical devices. In order to allow comparative imaging visualizations of either or simultaneously the heart and/or lung structures and devices located within the chambers of the heart or vessels or bronchi within the lungs, a clear perfusate such as a modified Krebs buffer solution with oxygenation is circulated through all four chambers of the heart and thus the coronary and/or pulmonary vasculatures. A ventilator with intubation tube can be used to inflate/deflate the lungs and/or provide oxygen to the isolated organs. The preparation and recordings of the preparation may be used in conjunction with the design, development and evaluation of devices for use in or on the heart and/or lungs, as well as for use as an investigational and teaching aid to assist physicians and students in understanding the operation of the cardiopulmonary system.
Owner:MEDTRONIC INC

Molecular plasma deposition of colloidal materials

A molecular plasma discharge deposition method for depositing colloidal suspensions of biomaterials such as amino acids or other carbon based substances onto metal or nonmetal surfaces without loss of biological activity and / or structure is described. The method is based on generating a charged corona plasma which is then introduced into a vacuum chamber to deposit the biomaterial onto a biased substrate. The deposited biomaterials can be selected for a variety of medical uses, including coated implants for in situ release of pharmaceuticals.
Owner:NORTHEASTERN UNIV

Stabilized hypohalous acid solutions

ActiveUS20120237616A1Sanitizing and disinfecting and cleansing hard surfaceMaintain activityAntibacterial agentsBiocideChemistryMammalian tissue
The present invention provides a stabilized hypohalous acid solution (or formulation thereof), which may be conveniently packaged for sale, or stored for later use on demand. The invention further provides methods of making the stabilized hypohalous acid solution, as well as methods of use for disinfecting mammalian tissue, including wounds and burns, disinfecting or cleansing surfaces, or treating and / or preserving food products and cut flowers, among other uses.
Owner:URGO US INC

Antibacterial medical equipment and method for producing the same

ActiveUS20120064132A1Excellent in sufficient antibacterial activityImprove compatibilityAntibacterial agentsBiocidePhosphatePhosphoric acid
An object of the present invention is to provide an antibacterial medical equipment which has sufficient antibacterial activity in vivo and is excellent in compatibility with living tissues, and also can maintain antibacterial activity over a long period and has high safety.
An antibacterial medical equipment characterized in that inositol phosphate is bonded to a Ca compound of a medical equipment whose surface is at least coated with a layer of the Ca compound, or a medical equipment comprising the Ca compound. The antibacterial medical equipment as described above, wherein silver ions are bonded to the inositol phosphate. A method for producing an antibacterial medical equipment, which comprises bringing a medical equipment whose surface is at least coated with a layer of a Ca compound, or a medical equipment comprising a Ca compound into contact with an aqueous solution of inositol phosphate to obtain an antibacterial medical equipment in which inositol phosphate is bonded to the Ca compound. The method for producing an antibacterial medical equipment, wherein inositol phosphate is bonded to the Ca compound and then the Ca compound is brought into contact with an aqueous solution containing silver ions to obtain an antibacterial medical equipment in which silver ions are bonded to the inositol phosphate.
Owner:MEIJI UNIV +1
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