Patents by Inventor Stephen A. Madison
Stephen A. Madison 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: 5560749Abstract: A bleaching composition and method is described that includes contacting a substrate with a peroxygen compound and a polymeric bleach precursor which has a monomer repeating unit of the structure: ##STR1## wherein R is hydrogen or a C.sub.1 -C.sub.20 radical selected from the group consisting of alkyl, cycloalkyl, alkenyl, cycloalkenyl and aryl radicals; andR.sup.1 is a C.sub.1 -C.sub.40 radical selected from the group consisting of alkyl, cycloalkyl, alkenyl, cycloalkenyl and aryl radicals.Type: GrantFiled: June 6, 1995Date of Patent: October 1, 1996Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Stephen A. Madison, Pamela C. Lam
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Patent number: 5550256Abstract: Novel bleach catalysts, a method for bleaching substrates using these catalysts and detergent compositions containing the catalysts are reported. The catalysts are quaternary imine salts. Substrates such as fabrics may be bleached in an aqueous solution containing these salts and a peroxygen compound.Type: GrantFiled: April 5, 1995Date of Patent: August 27, 1996Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Stephen A. Madison, Janet L. Coope
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Patent number: 5482515Abstract: Novel bleach catalysts, a method for bleaching substrates using these catalysts and detergent compositions containing the catalysts are reported. The catalysts are quaternary imine salts. Substrates such as fabrics may be bleached in an aqueous solution containing these salts and a peroxygen compound.Type: GrantFiled: July 21, 1994Date of Patent: January 9, 1996Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Stephen A. Madison, Janet L. Coope
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Patent number: 5478357Abstract: A bleaching composition is described that includes a peroxygen compound such as sodium perborate, an oxygen transfer agent in the form of a quaternary imine salt and a bleach precursor. The quaternary imine salt at relatively low concentrations enhances the activity of the precursor. A method for bleaching substrates is also provided, especially a method for cleaning fabrics.Type: GrantFiled: July 21, 1994Date of Patent: December 26, 1995Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Stephen A. Madison, Janet L. Coope
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Patent number: 5476671Abstract: A novel pseudoceramide which has improved dispersibility in aqueous solutions and which can be produced by an economical manufacturing process. The process for producing new pseudoceramides and cosmetic compositions containing the new pseudoceramides are also disclosed.Type: GrantFiled: April 28, 1995Date of Patent: December 19, 1995Assignee: Chesebrough-Pond's USA Co., Division of Conopco, Inc.Inventors: Suk H. Cho, Laura J. Frew, Prem Chandar, Stephen A. Madison
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Patent number: 5466396Abstract: The present invention is directed to novel compounds having the formula: ##STR1## wherein R is a C.sub.8 -C.sub.24 substituted or unsubstituted alkyl or alkenyl group;m is 1 to 3;n is 1 to 5; andx is hydrogen or a C.sub.1 to C.sub.3 hydrocarbon.The compounds are mild and good foaming compounds which can be used in both personal washing bars and liquids.Type: GrantFiled: November 19, 1993Date of Patent: November 14, 1995Assignee: Lever Brothers CompanyInventors: Stephen A. Madison, Michael Massaro, Gail B. Rattinger, Christine Wenzel
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Patent number: 5463115Abstract: Novel bleach catalysts, a method for bleaching substrates using these catalysts and detergent compositions containing the catalysts are reported. The catalysts are sulfonimines. Substrates such as fabrics may be bleached in an aqueous solution containing the sulfonimine and a peroxygen compound.Type: GrantFiled: July 16, 1991Date of Patent: October 31, 1995Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: David J. Batal, Stephen A. Madison
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Patent number: 5442066Abstract: Novel bleach catalysts, a method for bleaching substrates using these catalysts and detergent compositions containing same are reported. The bleaches are of the quaternary oxaziridinium salt type. Substrates such as fabrics may be bleached in an aqueous solution containing the quaternary oxaziridinium salt.Type: GrantFiled: September 2, 1994Date of Patent: August 15, 1995Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Stephen A. Madison, Janet L. Coope
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Patent number: 5429768Abstract: Novel bleach catalysts, a method for bleaching substrates using these catalysts and bleach compositions containing the catalysts are reported. These catalysts are magnesium salts of sulfonimines. Substrates such as fabrics and dishware may be bleached in an aqueous solution containing the magnesium sulfonimine salts and a peroxygen compound.Type: GrantFiled: November 22, 1993Date of Patent: July 4, 1995Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Laurence Boen, Stephen A. Madison
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Patent number: 5410076Abstract: A process is reported for the preparation of bis(amidocarboxylic acid) involving the steps of:(i) charging a reactor with an acyl halide and an aminocarboxylate compound being formed from and selected from lactams and aminocarboxylic acids;(ii) slowly adding to the reaction medium an alkali at a rate to maintain a pH between 10 and 14; and(iii) recovering the bis(amidocarboxylic acid) from the reaction medium.The recovery procedure advantageously includes acidification of the reaction medium to a pH between 4.5 and 7. The preferred product of the process is N,N'-terephthaloyl-di(6-aminocaproic acid).Type: GrantFiled: November 12, 1993Date of Patent: April 25, 1995Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Janet L. Coope, AnneMarie Brescia, Stephen A. Madison
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Patent number: 5393902Abstract: A process is reported for the preparation of bis(amidocarboxylic acid) involving reacting an ester with an aminocarboxylate compound, the latter being formed from lactams or aminocarboxylic acids and salts thereof. The ester and aminocarboxylate compound are present in a weight ratio of about 1:1 to about 1:4, and reaction is conducted in a mono- or polyhydric alcohol solvent.Type: GrantFiled: April 26, 1994Date of Patent: February 28, 1995Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Janet L. Coope, AnneMarie Brescia, Michael I. Hill, Martina Santoso, Stephen A. Madison
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Patent number: 5374738Abstract: A process is provided for preparing 1,2-benzisothiazole-1,1-dioxides having structure (1): ##STR1## where R is a C.sub.1 -C.sub.20 alkyl or aryl radical, the process comprising the steps of:(a) preparing a solution in an anhydrous solvent of a saccharin salt having structure (2): ##STR2## where Z.sup.+ is a metallic cation other than magnesium; and (b) reacting heterogeneously the saccharin salt with an organomagnesium reagent in a relative magnesium to saccharin salt molar ratio of 1:1.Type: GrantFiled: November 22, 1993Date of Patent: December 20, 1994Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Laurence Boen, David J. Batal, Stephen A. Madison
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Patent number: 5370826Abstract: Novel bleach catalysts, a method for bleaching substrates using these catalysts and detergent compositions containing same are reported. The bleaches are of the quaternary oxaziridinium salt type. Substrates such as fabrics may be bleached in an aqueous solution containing the quaternary oxaziridinium salt. ##STR1## wherein: R.sup.4 may be a substituted or unsubstituted radical selected from the group consisting of hydrogen, aryl, heterocyclic ring, alkyl and cycloalkyl radicals;R.sup.5 and R.sup.6 may be a substituted or unsubstituted radical selected from the group consisting of hydrogen, aryl, heterocyclic ring, alkyl, cycloalkyl, nitro, halo, cyano, alkoxy, keto, carboxylic and carboalkoxy radicals; andX.sup.- is a counterion stable in the presence of oxidizing agents.Type: GrantFiled: November 12, 1993Date of Patent: December 6, 1994Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Stephen A. Madison, Janet L. Coope
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Patent number: 5360569Abstract: A bleaching composition is described that includes a peroxygen compound such as sodium perborate, an oxygen transfer agent in the form of a quaternary imine salt and a bleach precursor. The quaternary imine salt at relatively low concentrations enhances the activity of the precursor. A method for bleaching substrates is also provided, especially a method for cleaning fabrics. The preferred quaternary imine salt has the structure: ##STR1## wherein: R.sup.4 may be a substituted or unsubstituted radical selected from the group consisting of hydrogen, aryl, heterocyclic ring, alkyl and cycloalkyl radicals;R.sup.5 and R.sup.6 may be a substituted or unsubstituted radical selected from the group consisting of hydrogen, aryl, heterocyclic ring, alkyl, cycloalkyl, nitro, halo, cyano, alkoxy, keto, carboxylic and carboalkoxy radicals; andX.sup.- is a counterion stable in the presence of oxidizing agents.Type: GrantFiled: November 12, 1993Date of Patent: November 1, 1994Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Stephen A. Madison, Janet L. Coope
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Patent number: 5360568Abstract: Novel bleach catalysts, a method for bleaching substrates using these catalysts and detergent compositions containing the catalysts are reported. The catalysts are quaternary imine salts. Substrates such as fabrics may be bleached in an aqueous solution containing these salts and a peroxygen compound. Most preferred as catalyst are the 3,4-dihydroquinolinium salts having the structure: ##STR1## wherein: R.sup.4 may be a substituted or unsubstituted radical selected from the group consisting of hydrogen, aryl, heterocyclic ring, alkyl and cycloalkyl radicals;R.sup.5 and R.sup.6 may be a substituted or unsubstituted radical selected from the group consisting of hydrogen, aryl, heterocyclic ring, alkyl, cycloalkyl, nitro, halo, cyano, alkoxy, keto, carboxylic and carboalkoxy radicals; andX.sup.- is a counterion stable in the presence of oxidizing agents.Type: GrantFiled: November 12, 1993Date of Patent: November 1, 1994Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Stephen A. Madison, Janet L. Coope
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Patent number: 5326861Abstract: An improved process for preparing triazacyclo compounds and, in particular, 1,4,7-tritosyl-1,4,7-triazyacyclononane. The process involves reacting a diethylenetriamine triarylsulphonate with a cyclising agent selected from the group consisting of diaryl sulphonates, dialkyl sulphonates, ethylene dibromide, ethylene dichloride and diacetylglycol in the presence of ultrasound.Type: GrantFiled: October 21, 1992Date of Patent: July 5, 1994Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Stephen A. Madison, Jean H. Koek, Johan J. W. Eshuis, Ronald P. Potman
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Patent number: 5310925Abstract: Novel bleaches are reported. The bleaches are of the N-sulfonyloxaziridine type. Substrates such as fabrics may be bleached in an aqueous solution containing the oxaziridine.Type: GrantFiled: July 16, 1991Date of Patent: May 10, 1994Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: David J. Batal, Stephen A. Madison
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Patent number: 5281361Abstract: Novel cationic nitriles, methods of preparing such nitriles and use thereof as cationic peroxyacid bleach precursor in bleaching (detergent) compositions are disclosed.The novel cationic nitriles are non-hygroscopic and are characterized in that they have a counter-anion X.sup.- selected from the group consisting of 1) R-SO.sub.3.sup.-, 2) R-SO.sub.4.sup.-, 3) R-CO.sub.2.sup.-, wherein R is a straight or branched chain, optionally substituted, alkyl, alkylether or alkylene group containing 4 to 20 carbon atoms, or a phenyl or alkyl phenyl group containing 6 to 20 carbon atoms, and 4) any other surfactant anion not falling under the groups 1), 2) and 3).Type: GrantFiled: May 29, 1991Date of Patent: January 25, 1994Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Christopher J. Adams, Stephen A. Madison, John Oakes, David W. Thornthwaite
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Patent number: 5268003Abstract: An amido peroxyacid compound is provided having the formula: ##STR1## wherein R is selected from the group consisting of C.sub.1 -C.sub.12 alkylene, C.sub.5 -C.sub.12 cycloalkylene, C.sub.6 -C.sub.12 arylene and radical combinations thereof;R.sup.1 and R.sup.2 are independently selected from the group consisting of H, C.sub.1 -C.sub.16 alkyl and C.sub.6 -C.sub.12 aryl radicals and a radical that can form a C.sub.3 -C.sub.12 ring together with R.sup.3 and both nitrogens;R.sup.3 is selected from the group consisting of C.sub.1 -C.sub.12 alkylene, C.sub.5 -C.sub.12 cycloalkylene and C.sub.6 -C.sub.12 arylene radicals, and provided when R.sup.3 is arylene and when n' and m' are each zero, R is other than C.sub.5 alkylene;n and n' each are an integer chosen such that the sum thereof is 1;m and m' each are an integer chosen such that the sum thereof is 1; andM is selected from the group consisting of H, alkali metal, alkaline earth metal, ammonium, alkanolammonium cations and radicals and combinations thereof.Type: GrantFiled: March 31, 1992Date of Patent: December 7, 1993Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Janet L. Coope, Robert W. Humphreys, Stephen A. Madison
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Patent number: 5106528Abstract: Bleaching and detergent compositions are disclosed which upon dissolution in aqueous medium provide a mixture of hydrophobic and cationic peroxyacids. The compositions which are highly effective at removing a wide range of stain types with better background whiteness at bleach solution temperatures of 40.degree. C. and less, comprise a peroxide bleach compound, a hydrophobic peroxyacid (bleach precursor) and a cationic or amphoteric peroxyacid (bleach precursor).Type: GrantFiled: May 10, 1990Date of Patent: April 21, 1992Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Keith C. Francis, Stephen A. Madison, John Oakes, David W. Thornthwaite