Patents by Inventor Thomas J. Walter
Thomas J. Walter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11947178Abstract: An optical distribution and splice frame system includes rack(s), enclosure(s), cable management component(s), and/or cassette(s) that have features to allow for different cable management configurations not yet available in the market. A fiber optic cassette and enclosure are designed to enable flexibility in cable management configurations for the overall system.Type: GrantFiled: September 17, 2021Date of Patent: April 2, 2024Assignee: Panduit Corp.Inventors: Thomas M. Sedor, Max W. Hibner, Michael R. Walters, Alex C. Brouwer, Michael Mayo, Bon B. Sledzinski, Benjamin J. Berridge
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Patent number: 11921339Abstract: An optical distribution and splice frame system includes rack(s), enclosure(s), cable management component(s), and/or cassette(s) that have features to allow for different cable management configurations not yet available in the market. A fiber optic cassette and enclosure are designed to enable flexibility in cable management configurations for the overall system.Type: GrantFiled: September 17, 2021Date of Patent: March 5, 2024Inventors: Thomas M. Sedor, Max W. Hibner, Michael R. Walters, Alex C. Brouwer, Michael Mayo, Bon B. Sledzinski, Benjamin J. Berridge
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Patent number: 4948648Abstract: A composite fire resistant laminar cushioning material is disclosed. The material comprises a foamed polyphosphazene upper lamella and a foamed polyurethane lower lamella. The foamed polyphosphazene further comprises a lamelliform substantially unfoamed outer first layer and a substantially foamed second layer. The cushioning material is capable of passing the Cal-133 flammability test.Type: GrantFiled: December 11, 1989Date of Patent: August 14, 1990Assignee: Ethyl CorporationInventors: Billie B. Dadgar, Thomas J. Walter
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Patent number: 4552966Abstract: 2-Nitro-4-(4-pyridinyl)benzoic acids, such as 2-nitro-4-(4-pyridinyl)benzoic acid, are prepared by oxidizing the appropriate 4-(4-alkyl-3-nitrophenyl)pyridine with, e.g., potassium permanganate or nitric acid. The products are particularly useful in the preparation of antibacterial 1-alkyl-1,4-dihydro-4-oxo-7-pyridinyl-3-quinolinecarboxylic acids.Type: GrantFiled: July 8, 1983Date of Patent: November 12, 1985Assignee: Ethyl CorporationInventors: Paul F. Ranken, Thomas J. Walter
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Patent number: 4533735Abstract: 4-(4-Halo-3-nitrophenyl)pyridines, useful as intermediates in the synthesis of antibacterial 1-alkyl-1,4-dihydro-4-oxo-7-pyridinyl-3-quinolinecarboxylic acids, are obtained by nitrating 4-(4-halophenyl)pyridines. The 4-(4-halo-3-nitrohenyl)pyridines may be converted to the antibacterial agents by reducing them to 4-(3-aminophenyl)pyridines and then subjecting the amino compounds to suitable known reactions.Type: GrantFiled: May 19, 1983Date of Patent: August 6, 1985Assignee: Ethyl CorporationInventor: Thomas J. Walter
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Patent number: 4524203Abstract: 4-(4-Pyridinyl)isatoic anhydrides are prepared by reacting a 2-amino-4-(4-pyridinyl)benzoic acid, i.e., an acid, ester, or salt, with phosgene, preferably gaseous phosgene. The products are particularly useful in the preparation of antibacterial 1-alkyl-1,4-dihydro-4-oxo-7-pyridinyl-3-quinolinecarboxylic acids.Type: GrantFiled: August 15, 1983Date of Patent: June 18, 1985Assignee: Ethyl CorporationInventors: Thomas J. Walter, Paul F. Ranken
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Patent number: 4515945Abstract: N-alkyl-4-(4-pyridinyl)isatoic anhydrides are prepared by alkylating a 4-(4-pyridinyl)isatoic anhydride, suitably in the presence of sodium hydride and N,N-dimethylformamide. The products are particularly useful in the preparation of antibacterial 1-alkyl-1,4-dihydro-4-oxo-7-pyridinyl-3-quinolinecarboxylic acids.Type: GrantFiled: August 15, 1983Date of Patent: May 7, 1985Assignee: Ethyl CorporationInventors: Paul F. Ranken, Thomas J. Walter
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Patent number: 4490535Abstract: 4-(3- and 4-chlorocyclohex-3-enyl)pyridines, useful as intermediates in the preparation of pesticides and bactericides, are prepared by reacting a 4-vinylpyridine with chloroprene.Type: GrantFiled: June 20, 1983Date of Patent: December 25, 1984Assignee: Ethyl CorporationInventor: Thomas J. Walter
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Patent number: 4473706Abstract: Cyclic-keto-acids of the general formula: ##STR1## wherein R is hydrogen or a monovalent alkyl radical which can be either straight chain or branched having from 1 to about 20 carbon atoms and X=1, 3, or 4, are prepared by reacting a functionalized 1-bromoalkane of the formula: ##STR2## wherein R and X are as defined above and Y is a leaving group, preferably the halogens, in a liquid solvent medium with carbon monoxide at elevated temperature and pressure in the presence of a catalytic amount of a metal carbonyl compound and an alkali or an alkaline earth metal inorganic base.Type: GrantFiled: August 6, 1982Date of Patent: September 25, 1984Assignee: Ethyl CorporationInventors: John Y. Lee, Thomas J. Walter
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Patent number: 4405792Abstract: 4-(Chlorophenyl)pyridines in which the chlorine atom is in the 3- or 4-position of the phenyl group are prepared by reacting a 4-vinyl pyridine with chloroprene to form a 4-(3- or 4-chlorocyclohex-3-enyl)pyridine and then catalytically dehydrogenating the 4-(3- or 4-chlorocyclohex-3-enyl)pyridine to form a 4-(3- or 4-chlorophenyl)pyridine. The 4-(3- and 4-monochlorocyclohex-3-enyl)pyridines are novel compounds.Type: GrantFiled: September 8, 1981Date of Patent: September 20, 1983Assignee: Ethyl CorporationInventor: Thomas J. Walter
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Patent number: 4401581Abstract: Lubricating oil dispersants are made by reacting an (a) alkenyl succinic anhydride, (b) an alcohol (e.g. pentaerythritol), (c) a hydroxy-substituted amine (e.g. tris-hydroxymethylaminomethane, (d) a polyoxyalkyleneamine, and (e) an alkenyl succinimide.Type: GrantFiled: March 15, 1982Date of Patent: August 30, 1983Assignee: Edwin Cooper and Company LimitedInventors: Aubrey L. Burrows, Thomas J. Walter
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Patent number: 4247490Abstract: A process for purification of dialkyl phosphorochloridothioate by contacting a crude material containing oxygenated phosphorus compound impurities with an alcohol and separating the product dialkyl phosphorochloridothioate from the reaction product, for example, by distillation.Type: GrantFiled: September 10, 1979Date of Patent: January 27, 1981Assignee: Ethyl CorporationInventors: Charles R. Bergeron, Alfred P. Anderson, Thomas J. Walter
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Patent number: 4188499Abstract: Primary alcohol containing impurities which have internal hydroxyl groups is purified to cause removal of such internal hydroxyl groups with reduced formation of ethers by treating the impure alcohol with an alumina catalyst which has been contacted with a hydroxide of a Group 1-A element. Preferably the alcohol treatment is concurrent with or followed by a hydrogenation treatment the purpose of which is to improve the iodine number of the treated alcohol.Type: GrantFiled: November 28, 1977Date of Patent: February 12, 1980Assignee: Ethyl CorporationInventors: Thomas J. Walter, Sebastian M. Laurent
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Patent number: 4188493Abstract: It is disclosed that water soluble salts of carboxyalkyloxy succinic acids can be obtained in a form containing less than usual contamination by alkaline earth metal and related substances by treating the contaminated salts with alkali metal carbonate and separating (e.g., filtering) at an elevated temperature and at a selected pH region. The most important factor in obtaining this improvement is the use of the proper separating temperature, preferably within the range of 70.degree.-125.degree. C., especially a temperature of about 100.degree. C. In addition, the use of certain conditions of pH minimizes side reactions.Type: GrantFiled: March 28, 1977Date of Patent: February 12, 1980Assignee: Ethyl CorporationInventor: Thomas J. Walter
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Patent number: 4186147Abstract: Thioalkyl aniline compounds, useful as chemical intermediates, for example in the preparation of anthelmintic, antibacterial and fungicidal benzimidazole compounds, are prepared by reaction of thiocyano aniline compounds with an alcohol in the presence of an alkali metal cyanide and alternatively an alkyl halide together with a dipolar aprotic solvent; an alkyl halide together with a water-immiscible solvent, a phase transfer catalyst, and the use of aqueous alkali metal cyanide; or an alkyl halide, a water-immiscible solvent and a polymer bound phase transfer catalyst.Type: GrantFiled: October 19, 1978Date of Patent: January 29, 1980Assignee: Ethyl CorporationInventor: Thomas J. Walter
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Patent number: 4152522Abstract: A process for preparing 2-benzimidazole carbamate compounds by condensing an alkyl cyano carbamate with an o-phenylenediamine produced by reacting an ortho-nitro-aniline with thiocyanogen followed by replacement of the cyanide with an alkyl group and then converting the nitro group to the amine.Type: GrantFiled: January 3, 1978Date of Patent: May 1, 1979Assignee: Ethyl CorporationInventor: Thomas J. Walter
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Patent number: 4137260Abstract: It is disclosed that water soluble carboxyalkoxy succinate tetrahydrate salt can be precipitated in high purity from alcohol-water solvent systems when operating at temperatures from about 50.degree. C to about 100.degree. C using seed crystals of either tetrahydrate or pentahydrate form or a mixture thereof. Useful temperatures are from about 45.degree. to about 75.degree. C. Preferred temperatures are above about 55.degree. C up to about 65.degree. C where tetrahydrate product is obtainable even where pentahydrate seed is used.Type: GrantFiled: February 3, 1977Date of Patent: January 30, 1979Assignee: Ethyl CorporationInventor: Thomas J. Walter
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Patent number: 4058560Abstract: It is disclosed that the production and recovery of water soluble carboxymethyloxy succinic acid salt from zinc or alkaline earth metal carboxymethyloxy succinic acid salt is enhanced by adding the zinc or alkaline earth metal salt to a carbonate which forms therewith a water soluble carboxymethyloxy succinic acid salt. The treating process, performed in an aqueous system, produces a zinc or alkaline earth metal carbonate precipitiate which is readily and quickly filtered providing a significant improvement in filterability over that experienced when the starting carbonate is added to the alkaline earth metal carboxymethyloxy succinate. Preferably the addition is progressive; that is, the zinc or alkaline earth metal carboxymethyloxy succinate is added to the carbonate gradually so that for the most part the carbonate is present in excess over the other reactant.Type: GrantFiled: August 30, 1976Date of Patent: November 15, 1977Assignee: Ethyl CorporationInventor: Thomas J. Walter