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55results about How to "Limited life" patented technology

Software based Dynamic Key Generator for Multifactor Authentication

A software based method and system providing secure and robust multifactor authentication of internet users using at least one factor each of 1) Something you know; 2) Something you have; and 3) Something you are—A physical characteristic of the user or his / her computer / device. This method of authenticating the identity of a user to determine access to a host includes providing an encrypted key string based on one or more static and dynamic factors corresponding the data instances of a user or his / her computer / device, one or more static and dynamic factors corresponding the data instances of the host, and user input factors; evaluating the factor-based data instances to determine if the user's identity is authenticated; and granting or restricting the user's access to the host based on authentication results. The provider generates a key string based on the inputs gathered / provided, time stamps the key, encrypts the key and sends it to the host. The host in turns decrypts the key string, evaluates the static factors against its database, and evaluates the dynamic factors based on pre-defined logic. The user is successfully authenticated if all validations are positive. Based on the authentication results the user is granted or restricted an access to the host resources. This method and system significantly reduces the chances of identity theft occurring from phishing, pharming, man-in-middle theft, spy-ware, and key stroke logger in everyday consumer e-commerce by deploying multifactor authentication based on static and dynamic factors stored / generated at multiple places, key encryption, key time stamping, and elimination of key strokes.
Owner:TULSYAN SURENDRA KUMAR

Production of alkyl aromatic compounds

ActiveUS20050143612A1Limited catalyst run lengthLimited catalyst lifeMolecular sieve catalystOrganic chemistry methodsChemistryPollutant
Improved integrated processes for the production of alkyl aromatic compounds are disclosed wherein aromatic compounds which may be treated for removal of deleterious substances are reacted with olefin compounds, which may also be treated for contaminant removal, in the presence of acidic zeolite catalyst(s) to produce the desired alkyl aromatic compound(s). The aromatic and preferably also the olefin feeds are treated substantially to remove contaminants, particularly the nitrogen compounds contained therein, before they are brought together for reaction in the presence of the zeolite catalyst(s). In accordance with the present invention, it has been found that feed pretreatment for removal of nitrogen compounds significantly improves the run length and life of the acidic zeolite catalyst(s). The feed pretreatment of this invention may include the steps of distillation, extraction, and / or adsorption by solid adsorbent, which may be regenerated in accordance with further embodiments of this invention.
Owner:STONE & WEBSTER PROCESS TECH

Binder-free polycrystalline cubic boron nitride abrasive and preparation method thereof

The invention discloses a binder-free polycrystalline cubic boron nitride abrasive and a preparation method thereof. The preparation method of the abrasive comprises the following steps: 1, adding hexagonal boron nitride powder into a die, and carrying out molding preformation; 2, carrying out cold isostatic pressing treatment on the above preformed product under vacuum conditions; 3, adding the above obtained hexagonal boron nitride block into a tantalum cup in order to form an assembled block together with a pressure transmitting medium; and 4, carrying out high temperature high pressure synthesis treatment on the assembled block, carrying out furnace cooling, demolding, crushing, and grading to prepare the abrasive. The binder-free polycrystalline cubic boron nitride abrasive has the ultrafine crystal structure of submicron dimension cBN monocrystal, and the micro-fragmentation self-sharpening effect and the isotropy of the binder-free polycrystalline cubic boron nitride abrasive overcome passivation, cleavage, anisotropy and other defects of monocrystalline cBN abrasives; and the binder-free polycrystalline cubic boron nitride abrasive disclosed in the invention has high hardness and strength, is suitable for high precision processing of high hardness quenched steel, especially electrical, electronic and optical devices, has very high social values and economic benefit, and is suitable for popularization and application.
Owner:FUNIK ULTRAHARD MATERIAL

Production of alkyl aromatic compounds

Improved integrated processes for the production of alkyl aromatic compounds are disclosed wherein aromatic compounds which may be treated for removal of deleterious substances are reacted with olefin compounds, which may also be treated for contaminant removal, in the presence of acidic zeolite catalyst(s) to produce the desired alkyl aromatic compound(s). The aromatic and preferably also the olefin feeds are treated substantially to remove contaminants, particularly the nitrogen compounds contained therein, before they are brought together for reaction in the presence of the zeolite catalyst(s). In accordance with the present invention, it has been found that feed pretreatment for removal of nitrogen compounds significantly improves the run length and life of the acidic zeolite catalyst(s). The feed pretreatment of this invention may include the steps of distillation, extraction, and / or adsorption by solid adsorbent, which may be regenerated in accordance with further embodiments of this invention.
Owner:HWANG SHYH YUAN +6

Plating method and plating bath precursor used therefor

InactiveUS20020079226A1Composition of easilyImprove concentrationCellsBearing componentsIonChemistry
To provide a plating method, which enables wide industrial use of the redox system electroless plating method having excellent characteristics, and a plating bath precursor which is preferable for the plating method. The plating method comprises a process oxidizing first metal ions of a redox system of a plating bath from a lower oxidation state to a high oxidation state, and second metal ions of said redox system are reduced and deposited onto the surface of an object to be plated, wherein a process is provided in which by supplying the electrical current to the plating bath, the first metal ions are reduced from said lower oxidation state to thereby activate the plating bath. The plating bath precursor is formed stabilizing the plating bath so that reduction and deposition of the second metal ions substantially do not occur in order to improve its storing performance.
Owner:DAIWA FINE CHEM +1
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