Patents by Inventor Dominic Pratt
Dominic Pratt 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: 6962610Abstract: Provided is a hair dye composition containing a dissociative direct dye represented by the following formula (1): wherein, R1 to R4 each represents H or substituent, X represents OH or —NHSO2R5, R5 represents an alkyl, aryl or heterocyclic group, and A represents a divalent group capable of forming a methine dye as a whole compound, together with the portion other than A. The hair dye composition of the present invention is capable of strongly dyeing the hair with a vivid color tone without causing decomposition of the dye during the dyeing process, exhibits an excellent resistance against sunlight, hair washing, perspiration, friction and heat, has a high stability against an alkali agent and an oxidizing agent, has a high dyeing property, and has less color fade after the passage of time.Type: GrantFiled: September 12, 2003Date of Patent: November 8, 2005Assignees: Kao Corporation, Fuji Photo Film Co., Ltd.Inventors: Dominic Pratt, Toshio Kawagishi
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Publication number: 20050210605Abstract: The present invention relates to a method to achieve a reversible change of the colour of hair dyed with an azo dye wherein the change of the colour can be effected by, for example, the salonist or the consumer in a simple manner. The colour of the hair thus dyed may be changed simply by treating the dyed hair with an acid treatment composition at any time after the first dyeing treatment. If desired by the consumer, the colour may be returned to substantially the original post dye colour by treating the hair further with an alkaline treatment composition.Type: ApplicationFiled: November 26, 2004Publication date: September 29, 2005Applicants: Kao Corporation, FUJI PHOTO FILM CO., LTD.Inventors: Dominic Pratt, Masayoshi Nojiri, Toshio Kawagishi
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Publication number: 20050015896Abstract: The present invention is directed to a hair dyeing composition containing a dissociative azo dye of the following general formula (1) A-N?N-B??(1) wherein “A” represents a phenyl or naphthyl group which may be substitued; “B” represents an atomic group containing a dissociative proton, with the proviso “A” and “B” are free of sulfo, carboxyl and quaternary ammonium groups. Additionally, the present invention describes a method of dyeing human or animal hair by using such a dye and the use of this direct azo dye for dyeing human or animal hair. The use of this direct azo dye can impart the hair with an extremely vivid color and has less color fading over time.Type: ApplicationFiled: September 15, 2003Publication date: January 27, 2005Applicants: Kao Corporation, FUJI PHOTO FILM CO., LTD.Inventors: Dominic Pratt, Toshio Kawagishi
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Patent number: 6783558Abstract: The present invention is directed to a hair coloring method by using a composition comprising a specified ring-fused heterocycle direct dyestuff having the general formula (1) or a salt thereof wherein the formulas are as defined in the patent claims. Furthermore, the present invention is also directed to the composition. This composition has a surprisingly good hair coloring performance and compatibility with peroxides. The use of this composition leads to long lasting brilliant colors wherein the color is stable against washing of the hair and environmental influences.Type: GrantFiled: March 14, 2002Date of Patent: August 31, 2004Assignees: Kao Corporation, Fuji Photo Film Co., Ltd.Inventors: Dominic Pratt, Toshio Kawagishi
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Publication number: 20040139560Abstract: Provided is a hair dye composition containing a dissociative direct dye represented by the following formula (1): 1 2Type: ApplicationFiled: September 12, 2003Publication date: July 22, 2004Applicants: Kao Corporation, FUJI PHOTO FILM CO., LTD.Inventors: Dominic Pratt, Toshio Kawagishi
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Publication number: 20040117922Abstract: Provided is a hair dye composition containing a dissociative direct dye represented by the following formula (1): 1Type: ApplicationFiled: September 12, 2003Publication date: June 24, 2004Applicants: Kao Corporation, FUJI PHOTO FILM CO., LTD.Inventors: Dominic Pratt, Toshio Kawagishi
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Publication number: 20040107516Abstract: A hair colouring composition comprising one or more developers is selected from amino aromatic systems capable of being oxidised and thereafter undergoing at least two electrophilic attack reactions, and one or more couplers selected from compounds of the formula (I) in which X is a non-leaving substituent, and Z is an active leaving group, and Y is an active leaving group or a non-leaving substituent, such that in the presence of an oxidising agent the or each developer reacts with the or each coupler substantially only at the position having the active leaving group Z and, if Y is an active leaving group, Y, provided that if X is phenyl then Y is not ethyl or methyl. The application also claims compositions comprising a developer and specific compounds of formula (I).Type: ApplicationFiled: October 6, 2003Publication date: June 10, 2004Applicant: The Procter & Gamble CompanyInventors: Dominic Pratt, James Charles Dunbar, Delyth Angharad James
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Publication number: 20040107515Abstract: A hair colouring composition comprising one or more developers is selected from amino aromatic systems capable of being oxidised and thereafter undergoing at least two electrophilic attach reactions, and one or more couplers selected from (a) 1,3-diketones of the formula (I): in which X and Y are non-leaving substituents and Z is an active leaving group, such that in the presence of an oxidising agent the or each developer reacts with the or each coupler substantially only at the position having the active leaving group Z and (b) compoounds of the formula (II): in which R1, R2 and R3 are, independently, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl, aralyl, —R′NHCOR, —CONHR, —R′CONHR, —R′OH, —R′SO2R, —R′SO2NHR, —R′OR or —COR, in any of which R is H, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl, or aralkyl and R′ is alkylene, alkenylene, cycloalkylene, cycloalkenylene, arylene, alkarylene or aralkyrene, or sType: ApplicationFiled: October 6, 2003Publication date: June 10, 2004Applicant: The Procter & Gamble CompanyInventors: Dominic Pratt, James Charles Dunbar, Delyth Angharad James
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Patent number: 6733541Abstract: The invention concerns a composition for the dyeing of human hair on the basis of at least one direct-acting hair dyestuff, characterized in that it comprises at least one dyestuff of the formula (1) wherein R1 is a halogen atom; R2 and R4 are an optionally OH— or NH2-substituted C1-C4-alkyl group or phenyl group and R3 stands for H, or an optionally OH— or NH2-substituted C1-C4-alkyl group or phenyl group.Type: GrantFiled: March 13, 2002Date of Patent: May 11, 2004Assignee: KAO CorporationInventor: Dominic Pratt
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Publication number: 20040019982Abstract: The present invention is directed to a hair dyeing composition comprising at least one azo dye of the following general formula (1):Type: ApplicationFiled: May 28, 2003Publication date: February 5, 2004Applicants: KAO CORPORATION, FUJI PHOTO FILM CO., LTD.Inventors: Dominic Pratt, Toshio Kawagishi
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Publication number: 20030024059Abstract: The present invention is directed to a hair coloring method by using a composition comprising a specified ring-fused heterocycle direct dyestuff having the general formula (1) or a salt thereof wherein the formulas are as defined in the patent claims.Type: ApplicationFiled: March 14, 2002Publication date: February 6, 2003Applicant: KAO CORPORATIONInventors: Dominic Pratt, Toshio Kawagishi
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Publication number: 20030019052Abstract: The invention concerns a composition for the dyeing of human hair on the basis of at least one direct-acting hair dyestuff, characterized in that it comprises at least one dyestuff of the formula (1) 1Type: ApplicationFiled: March 13, 2002Publication date: January 30, 2003Applicant: KAO CORPORATIONInventor: Dominic Pratt
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Publication number: 20020124329Abstract: Novel hair coloring compositions are provided which give improved fade resistance.Type: ApplicationFiled: November 23, 1999Publication date: September 12, 2002Inventor: DOMINIC PRATT
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Patent number: 6432147Abstract: A hair coloring composition comprising: (a) from about 0.0003 moles (per 100 g of composition) to less than about 0.09 moles (per 100 g of composition) of an inorganic peroxygen oxidizing agent; and (b) an oxidative hair coloring agent; wherein the pH of each of (a) and (b) is in the range of from about 1 to about 6 and wherein the combined mixture of (a) and (b) has a pH in the range of from about 1 to about 6. The products can provide excellent hair coloring and in-use efficacy benefits including excellent initial color and good wash fastness in combination with reduced hair damage at low pH.Type: GrantFiled: June 23, 1999Date of Patent: August 13, 2002Assignee: The Procter & Gamble CompanyInventors: Louis Carlos Dias, James Charles Dunbar, Dominic Pratt
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Publication number: 20020088062Abstract: Hair coloring compositions comprising: (i) one or more developers selected from amino aromatic systems capable of being oxidized and thereafter undergoing a single nucleophilic attack, and (ii) one or more couplers selected from (A) (1) naphthols having an active leaving group in the para-position relative to the —OH group, or (2) phenols with an active leaving group which is hydrogen which is para to the —OH group, (B) 1,3-diketones, or (C) pyrazolones, such that in the presence of an oxidizing agent the or each developer reacts with the or each coupler substantially only at the position having the active leaving group.Type: ApplicationFiled: November 23, 1999Publication date: July 11, 2002Inventor: DOMINIC PRATT
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Patent number: 6398821Abstract: A hair coloring composition comprising: (a) an inorganic peroxygen oxidizing agent; and (b) an oxidative hair coloring agent; wherein the pH of each of components (a) and (b) is in the range of from about pH 1 to about pH 4.5 and wherein the pH of the composition is in the range of from about pH 1 to about pH 4.5. The products can provide excellent hair coloring and in-use efficacy benefits including excellent initial color and good wash fastness in combination with reduced hair damage at low pH.Type: GrantFiled: June 23, 1999Date of Patent: June 4, 2002Assignee: The Procter & Gamble CompanyInventors: Louis Carlos Dias, James Charles Dunbar, Dominic Pratt
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Publication number: 20020053110Abstract: A hair coloring composition comprising: (a) a preformed organic peroxyacid oxidising agent; and (b) an oxidative hair coloring agent; wherein the pH of each of components (a) and (b) is in the range of from about pH 1 to less than about pH 7 and wherein the pH of the composition is in the range of from about pH 1 to less than about pH 7. The products can provide excellent hair coloring and in-use efficacy benefits including excellent initial color and good wash fastness in combination with reduced hair damage at low pH.Type: ApplicationFiled: June 23, 1999Publication date: May 9, 2002Inventors: LOUIS CARLOS DIAS, JAMES CHARLES DUNBAR, DOMINIC PRATT, CATHERINE MARGARET HESP, ALISON JANE SANGER
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Publication number: 20020035758Abstract: 1Type: ApplicationFiled: October 10, 2001Publication date: March 28, 2002Inventor: Dominic Pratt
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Publication number: 20020035759Abstract: Hair colouring compositions are provided which comprise (i) one or more developers selected from amino aromatic systems capable of being oxidised and thereafter under-going a single electrophilic attack, and (ii) one or more couplers selected from (A) phenols and naphthols having an active leaving group in the para position relative to the hydroxyl group, (B) 1,3-diketones containing the group (a) in which Z is an active leaving group, and (C) compounds containing the group (b) in which Z is an active leaving group, and X is an active leaving group or a non-leaving substituent, such that in the presence of an oxidising agent the or each developer reacts with the or each coupler substantially only at the positions having the active leaving group Z and, if X is an active leaving group, X, and (iii) an antioxidant. Use of an antioxidant with these colouring agents gives good fade resistance. A kit, method and system for colouring hair are also provided using these colouring agents.Type: ApplicationFiled: October 10, 2001Publication date: March 28, 2002Inventor: Dominic Pratt
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Publication number: 20020032933Abstract: A hair coloring composition comprising: (a) from about 0.0003 moles (per 100 g of composition) to less than about 0.09 moles (per 100 g of composition) of an inorganic peroxygen oxidizing agent; and (b) an oxidative hair coloring agent; wherein the pH of each of (a) and (b) is in the range of from about 1 to about 6 and wherein the combined mixture of (a) and (b) has a pH in the range of from about 1 to about 6. The products can provide excellent hair coloring and in-use efficacy benefits including excellent initial color and good wash fastness in combination with reduced hair damage at low pH.Type: ApplicationFiled: June 23, 1999Publication date: March 21, 2002Inventors: LOUIS CARLOS DIAS, JAMES CHARLES DUNBAR, DOMINIC PRATT