Patents Examined by Joseph Murray
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Patent number: 5902896Abstract: A process for preparing bis(hydroxymethyl) compounds of the formula (I) ##STR1## wherein X.sup.1 and X.sup.2 represent identical or different electronegative groups, which process entails reacting C--H-acidic compounds of the formula (II) ##STR2## wherein X.sup.1 and X.sup.2 are as defined above, with formaldehyde, wherein the reaction is carried out in an anhydrous medium.Type: GrantFiled: March 20, 1998Date of Patent: May 11, 1999Assignee: Huels AktiengesellschaftInventor: Frank Bauer
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Patent number: 5902818Abstract: Cyclic N-halamine biocidal monomers and polymers and methods of using the same as biocides, wherein the functional group, halogenated oxazolidinones, may be homo- and copolymerized, are provided. The copolymerizations are effected with inexpensive monomers such as acrylonitrile, styrene, vinyl acetate, vinyl chloride, and the like. Grafting reactions were also accomplished with the N-halamine monomers and commercial polymers such as poly-acrylonitrile, poly-styrene, poly-vinyl acetate, poly-vinyl alcohol, poly-vinyl chloride, and cellulose. These N-halamine compounds are stable biocides which release small amounts of free halogen and other impurities. They will be useful as disinfectants for swimming pools, oil and water based paints, preservatives, medical and dental coatings, industrial and commercial coatings, fabrics, sterile bandages, liners of containers, and the like.Type: GrantFiled: December 9, 1997Date of Patent: May 11, 1999Assignee: Auburn UniversityInventors: Shelby D. Worley, Michael W. Eknoian, Yanjun Li
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Patent number: 5902516Abstract: A five-coordinate phosphorous compound which is useful as an stabilizer for organic materials and represented by the formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.5 independently represent hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group; R.sup.3 represents hydrogen atom or an alkyl group; X represents a direct bond, a sulfur atom or a group represented by --CHR.sup.6 -- wherein R.sup.6 represents hydrogen atom, an alkyl group or a cycloalkyl group, and a process for producing the compound (I) are provided.Type: GrantFiled: August 7, 1997Date of Patent: May 11, 1999Assignee: Sumitomo Chemical Co., LtdInventors: Naoki Inui, Taketoshi Kikuchi, Kanako Fukuda, Takashi Sanada
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Patent number: 5900500Abstract: Perfluoropolyethereal compounds having polycarbonate structure, and general formula: ##STR1## wherein c is an integer comprised between 0 and 10, preferably between 0 and 3,n is an integer from 2 to 1,000, extremes included,Rf is a poly-fluorooxyalkylenic chain, having number average molecular weight (Mn) comprised between 500 and 10,000.Type: GrantFiled: July 30, 1997Date of Patent: May 4, 1999Assignee: Ausimont S.p.A.Inventors: Stefano Turri, Marinella Levi, Claudio Tonelli, Ferdinando Danusso
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Patent number: 5900503Abstract: An optically active cyanohydrin represented by the following general formula (1): ##STR1## wherein each of R1 and R2 is a hydrogen atom or an amino-protecting group, and the configurations relating to the carbon atoms at the *2-position and *3-position are as follows: in the case of the carbon atom at the *2-position being in R-configuration, the carbon atom at the *3-position is in S-configuration, and in the case of the carbon atom at the *2-position being in S-configuration, the carbon atom at the *3-position is in R-configuration, can be efficiently produced by crystallizing one of the optically active cyanohydrins while treating a mixture of cyanohydrin diastereomers in the presence of an amine and an organic solvent to change the configuration relating to the carbon atom at the 2-position and thereby cause isomerization.Type: GrantFiled: May 11, 1998Date of Patent: May 4, 1999Assignee: Nippon Kayaku Kabushiki KaishaInventors: Yoshinobu Miyazawa, Taichi Koshigoe, Kouichi Ohkawa, Jouji Sekine, Shinichiro Saeki
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Patent number: 5897955Abstract: The present invention is directed to support members having surfaces that are rendered hydrophilic for use as a substrate for the immobilization of bioactive species thereon. The hydrophilic surfaces are chemically stable on the support member. The surfaces are also chemically variable to provide a variety of chemically functional groups for immobilization of bioactive species thereto. The surfaces comprise polymeric surfactants attached onto the surfaces of a support member and covalently cross-linked thereon to form a first layer. Hydrophilic polymers are then attached to the first layer on the support member to form a second layer thereon. The second layer is used to enhance the hydrophilicity of a support member, as well as, to provide a substrate for immobilizing bioactive species thereto. Methods for forming the first and second layers are also provided. In addition, methods for attaching bioactive substances to the hydrophilic polymers are provided.Type: GrantFiled: August 21, 1998Date of Patent: April 27, 1999Assignee: Gore Hybrid Technologies, Inc.Inventor: Paul D. Drumheller
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Patent number: 5895822Abstract: The fouling rate of quench systems in acrylonitrile manufacturing processes is reduced by maintaining a low level of highboiling organic compounds in aqueous recycle streams to the quench systems.Type: GrantFiled: October 23, 1997Date of Patent: April 20, 1999Assignee: Solutia Inc.Inventors: Valerie S. Monical, Daniel E. Steinmeyer, Gregory J. Ward
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Patent number: 5892092Abstract: A process for preparing unsaturated nitriles of the formula I ##STR1## where R, R.sup.1 and R.sup.2 are each independently of one another alkyl or alkenyl each having 1-20 carbon atoms or cycloalkyl or cycloalkenyl each having 3-12 carbon atoms and any two of the radicals R, R.sup.1 and R.sup.2 may be part of a saturated or unsaturated ring and R.sup.1 and R.sup.2 may also be hydrogen and n is 0 or 1-20, by dehydration of oximes of the formula II ##STR2## where R, R.sup.1, R.sup.2 and n are as defined above, comprises dehydrating in the gas or liquid phase at from 150.degree. to 300.degree. C. over a heterogeneous catalyst consisting of an oxidic, carbidic or nitridic support doped with basic oxides and/or hydroxides or compounds which are converted into said oxides or hydroxides under the reaction conditions, or of said basic oxides.Type: GrantFiled: August 31, 1998Date of Patent: April 6, 1999Assignee: BASF AktiengesellschaftInventors: Andreas Kramer, Wolfgang Siegel, Michael Henningsen, Georg Heinrich Grosch
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Patent number: 5892094Abstract: Process for preparing 4'-methyl-2-cyanobiphenyl, comprising, catalytically hydrogenating at least one brominated cyanobiphenyl compound selected from 4'-dibromomethyl-2-cyanobiphenyl and 4'-bromomethyl-2-cyanobiphenyl; and process for regenerating 4'-methyl-2-cyanobiphenyl, comprising, catalytically hydrogenating at least one brominated cyanobiphenyl compound selected from 4'-dibromomethyl-2-cyanobiphenyl and 4'-bromomethyl-2-cyanobiphenyl, contained in a filtrate prepared by brominating 4'-methyl-2-cyanobiphenyl in a solvent; crystallizing 4'-bromomethyl-2-cyanobiphenyl from the resulting reaction mixture; and removing the resulting crystals from the reaction mixture by filtration. 4'-Methyl-2-cyanobiphenyl can be used as starting materials for 4'-bromomethyl-2-cyanobiphenyl.Type: GrantFiled: December 22, 1997Date of Patent: April 6, 1999Assignee: Sumika Fine Chemicals Co., Ltd.Inventors: Tadashi Katsura, Hiroshi Shiratani, Kiyoshi Sugi, Nobushige Itaya
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Patent number: 5888481Abstract: The invention relates to novel cinnamamides, a process for their manufacture and their use as UV absorbers. The cinnamamides of the invention may be used as UV absorbers in a variety of engineered resins such as polyamides (especially nylon 6 and 6,6), polycarbonates, polyacetals, polysulfones, polyimides, polyaryletherketones, and polyesters, (especially PET and PBT), as well as, other polymers such as polyvinylchloride and polyolefins (polyethylenes and polypropylenes).Type: GrantFiled: September 29, 1995Date of Patent: March 30, 1999Assignee: AlliedSignal Inc.Inventors: Keith A. Horn, Richard B. Heath, David B. Schwind
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Patent number: 5881594Abstract: A method of enhancing the strength of metals by affecting subsurface zones developed during the application of large sliding loads. Stresses which develop locally within the near surface zone can be many times larger than those predicted from the applied load and the friction coefficient. These stress concentrations arise from two sources: 1) asperity interactions and 2) local and momentary bonding between the two surfaces. By controlling these parameters more desirable strength characteristics can be developed in weaker metals to provide much greater strength to rival that of steel, for example.Type: GrantFiled: May 9, 1997Date of Patent: March 16, 1999Assignee: Sandia CorporationInventors: Darcy Anne Hughes, Daniel B. Dawson, John S. Korellis
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Patent number: 5883281Abstract: A process for increasing the yield of an ammoxidation product by passing a feed into a reactor, passing an oxygen-containing gas stream containing at least a portion of inerts into the reactor, passing a substantially pure oxygen stream into the reactor, and reducing the flow of the oxygen-containing gas stream while increasing the flow of said substantially pure oxygen stream, wherein the total rate of flow of oxygen from the oxygen-containing gas stream and the substantially pure oxygen stream is maintained in an effective amount to produce the ammoxidation product such that the flow of said inerts passing into the reactor is substantially reduced.Type: GrantFiled: July 25, 1997Date of Patent: March 16, 1999Assignee: Praxair Technology, Inc.Inventor: Mathew Lincoln Wagner
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Patent number: 5880042Abstract: Protective clothing, in particular clothing which protects against injuries caused by stabbing instruments, cutting instruments, projectiles or splinters, consisting of multiple layers of flat structures. At least one side of at least one of these layers has been given a ceramic coating applied by plasma spraying. The layers preferably consist of woven fabrics made from aramide fibers. The protective clothing is especially suitable for stab protection, but a combined protection against the threat of stabbing or projectile weapons can also be achieved by this clothing while providing a good standard of wearer comfort.Type: GrantFiled: January 17, 1997Date of Patent: March 9, 1999Assignee: Akzo Nobel NVInventors: Dieter Hans Peter Schuster, Achim G. Fels, Guido Schurmann
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Patent number: 5874165Abstract: The present invention is directed to support members having surfaces that are rendered hydrophilic for use as a substrate for the immobilization of bioactive species thereon. The hydrophilic surfaces are chemically stable on the support member. The surfaces are also chemically variable to provide a variety of chemically functional groups for immobilization of bioactive species thereto. The surfaces comprise polymeric surfactants attached onto the surfaces of a support member and covalently cross-linked thereon to form a first layer. Hydrophilic polymers are then attached to the first layer on the support member to form a second layer thereon. The second layer is used to enhance the hydrophilicity of a support member, as well as, to provide a substrate for immobilizing bioactive species thereto. Methods for forming the first and second layers are also provided. In addition, methods for attaching bioactive substances to the hydrophilic polymers are provided.Type: GrantFiled: May 27, 1997Date of Patent: February 23, 1999Assignee: Gore Enterprise Holdings, Inc.Inventor: Paul D. Drumheller
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Patent number: 5874466Abstract: Novel routes for the preparation of acetonylbenzamides are provided by the reaction of an amine and acyl chloride. Novel routes to various intermediates used in the manufacture of acetonylbenzamides are also disclosed.Type: GrantFiled: June 10, 1997Date of Patent: February 23, 1999Assignee: Rohm and Haas CompanyInventors: Enrique Luis Michelotti, Heather Lynnette Rayle, Randall Wayne Stephens, William Joseph Zabrodski
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Patent number: 5874606Abstract: Disclosed is a method of making an o-arylbenzonitrile. A mixture is prepared of o-chlorobenzonitrile and about 1.0 to about 2.0 equivalents per equivalent of o-chlorobenzonitrile of a substituted phenylmagnesium halide in about 5 to about 30 mL per gram of o-chlorobenzonitrile of a solvent system of an ethereal solvent and N-methyl pyrrolidinone. The o-chlorobenzonitrile is reacted with the substituted phenylmagnesium halide at a temperature of about 10-.degree. to about 25.degree. C.Type: GrantFiled: March 31, 1998Date of Patent: February 23, 1999Assignee: Occidental Chemical CorporationInventors: Bao-Guo Huang, David Y. Tang
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Patent number: 5872148Abstract: A composition of matter, comprising a cannabinol compound having the structure ##STR1## wherein, Q is --C(R.sup.1)(Y.sup.1)--(CH.sub.2).sub.n --Z.sup.1 ; R.sup.1 is --H or --CH.sub.3 ;Y.sup.1 is --CH.sub.3 or Y.sup.2 ; Y.sup.2 is --N.sub.3 or --NCS; n is 4 or 6;Z.sup.1 is --H, when Y.sup.1 is Y.sup.2, or is Z.sup.2, when Y.sup.1 is --CH.sub.3 ; andZ.sup.2 is --N.sub.3 or --NCS.This composition has good binding affinity to the cannabinoid receptor and therefore, is useful as a receptor probe.Type: GrantFiled: August 8, 1995Date of Patent: February 16, 1999Assignee: University of ConnecticutInventors: Alexandros Makriyannis, Yan Guo, Vasiliki Abadji
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Patent number: 5869730Abstract: A process for manufacturing an unsaturated mononitrile selected from the group consisting of acrylonitrile and methacrylonitrile comprising reacting an olefin selected from the group consisting of propylene and isobutylene, ammonia and oxygen in a reactor zone in the presence of a catalyst to produce a reactor effluent containing the corresponding unsaturated mononitrile, transferring the reactor effluent containing the unsaturated mononitrile to a quench column wherein the reactor effluent containing the unsaturated mononitrile is contacted with at least a first aqueous stream to cool the reactor effluent, transferring the cooled reactor effluent containing the unsaturated mononitrile to an absorption column wherein the reactor effluent containing unsaturated mononitrile is contacted with at least a second aqueous stream to separate and remove the unsaturated mononitrile as a bottom stream from the absorption column, transferring the bottom stream containing the unsaturated mononitrile to a recovery and puriType: GrantFiled: May 13, 1998Date of Patent: February 9, 1999Assignee: The Standard Oil CompanyInventors: Anne M. Graham, Sanjay P. Godbole, Daniel G. Lee
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Patent number: 5865045Abstract: A containment tarpaulin is formed of an open weave knit stretch fabric having a major pore size which provides sufficient porosity to prevent lift of the tarpaulin due to airfoil effects. The open weave construction, particularly when polyester yarns are utilized, additionally provides resistance to tears, punctures, and abrasion. A rip-stop construction, preferably in the form of solid fabric areas extending across the width and length of the fabric, may be added to improve the strength of the fabric.Type: GrantFiled: April 3, 1997Date of Patent: February 2, 1999Inventors: J. Edward Wagner, Jaime Peisach
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Patent number: 5866709Abstract: Disclosed is a process for making an aromatic nitrile by reacting a benzotrichloride with an ammonium halide in the presence of an oxygen-donating initiator at a temperature of about 150.degree. to about 250.degree. C. An optional catalyst of a metal oxide or a metal salt can be used if desired.Type: GrantFiled: December 2, 1997Date of Patent: February 2, 1999Assignee: Occidental Chemical CorpInventors: Michael C. Hausladen, Bao-Guo Huang, David Y. Tang