Patents by Inventor Robin Gibson Hall
Robin Gibson Hall 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: 6881717Abstract: The present invention relates to fabric softening component comprising a clay, a flocculating agent, a surfactant and a carrier material. The carrier material is preferably a powdered or granular builder or alkalinity source. The component is preferably a spray-dried particle, extrudate or an agglomerate. It preferably comprises at least a sulphate and/or sulphonate surfactant, a zeolite and/or phosphate builder and a carbonate salt. Highly preferred is that the component also comprises a brightener.Type: GrantFiled: March 30, 2000Date of Patent: April 19, 2005Assignee: The Procter & Gamble CompanyInventors: Robin Gibson Hall, Nathalie Sophie Letzelter
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Patent number: 6689739Abstract: The present invention relates to detergent compositions which comprise low levels of inorganic sulphate filler salts, but instead high levels of carbonate salts and a system to counter balance the carbonate. This system comprises a floculating agent and a clay. Preferably only very low levels of an inorganic sulphate salt are present. Preferably, also other salts or silicates are present, including phosphates and/or zeolites.Type: GrantFiled: September 11, 2001Date of Patent: February 10, 2004Assignee: The Procter & Gamble CompanyInventor: Robin Gibson Hall
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Patent number: 6627598Abstract: The present invention relates to detergent compositions which comprise a flocculating agent and an organophilic smectite clay whereof at least 30%, preferably at least 40% of the exchangeable cations in the clay is replaced by one or more long-chain organic cations, preferably having at least one long carbon chain of at least 10 or even 12 carbon atoms. The compositions provide improved fabric softening and deliver good cleaning.Type: GrantFiled: January 18, 2002Date of Patent: September 30, 2003Assignee: The Procter & Gamble CompanyInventors: Barry Thomas Ingram, Stephen Wayne Heinzman, Nathalie Sophie Letzelter, Robin Gibson Hall
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Patent number: 6162784Abstract: Disclosed is a process for making a detergent composition containing a protease enzyme comprising: i) admixing a detergent surfactant and an acid source to form a surfactant/acid mixture; ii) forming an agglomerated surfactant/acid mix; and iii) adding an enzyme to the composition.Type: GrantFiled: February 1, 1999Date of Patent: December 19, 2000Assignee: The Procter & Gamble CompanyInventors: Robin Gibson Hall, Christian Leo Marie Vermote
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Patent number: 6127329Abstract: The present invention relates to detergent compositions or components thereof containing a detersive enzyme and one or more cationic surfactants of the formula:R.sup.1 R.sup.2 R.sup.3 R.sup.4 N.sup.+ X.sup.-in which R.sup.1 is a hydroxyalkyl group having no greater than 6 carbon atoms; each of R.sup.2 and R.sup.3 is independently selected from C.sub.1-4 alkyl or alkenyl; R.sup.4 is a C.sub.5-11 alkyl or alkenyl; and X.sup.- is a counterion.Type: GrantFiled: April 13, 1999Date of Patent: October 3, 2000Assignee: The Procter & Gamble CompanyInventors: Gerard Marcel Baillely, Robin Gibson Hall, Barry Thomas Ingram, Michael Alan John Moss
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Patent number: 6103685Abstract: The present invention relates to detergent compositions containing at least one anionic surfactant, one or more cationic surfactants of the formula: R.sup.1 R.sup.2 R.sup.3 R.sup.4 N+X.sup.- in which R.sup.1 is an optionally substituted phenol or hydroxyalkyl group having no greater than 6 carbon atoms; each of R.sup.2 and R.sup.3 is independently selected from C.sub.1-4 alkyl or alkenyl; R.sup.4 is a C[.sub.6 ].sub.5-11 alkyl or alkenyl; X.sup.- is a counterion, and a cationic dye-fixing agent.Type: GrantFiled: April 19, 1999Date of Patent: August 15, 2000Assignee: The Procter & Gamble CompanyInventor: Robin Gibson Hall
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Patent number: 6096703Abstract: Disclosed is a process for making a detergent composition comprising the steps of:i) making a detergent based composition comprising a solid acid source;ii) coating the solid acid source with a detergent surfactant; andiii) further adding an alkaline source and agglomerating said alkaline source with said acid source;and wherein the alkaline source and the acid source are capable of reacting together to produce a gas. Detergent compositions thus prepared show improved dispersability. Methods of laundering fabrics using such detergent compositions are disclosed.Type: GrantFiled: February 1, 1999Date of Patent: August 1, 2000Assignee: The Procter & Gamble CompanyInventor: Robin Gibson Hall
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Patent number: 6093218Abstract: Disclosed are detergent compositions with improved solubility having a bulk density of at least 600 g/l, comprising a branched surfactant and from about 1% to about 3% a particulate acid source which is citric acid and an alkaline source, wherein said acid source and alkaline source are capable of reacting together to produce a gas, and wherein about 80% or more of the acid source has a particle size in the range of from about 150 microns to about 710 microns, with at least 37% by weight of the acid source having a particle size of about 350 microns or less.Type: GrantFiled: February 1, 1999Date of Patent: July 25, 2000Assignee: The Procter & Gamble CompanyInventors: Robin Gibson Hall, Christian Leo Marie Vermote
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Patent number: 6087314Abstract: The present invention relates to detergent compositions having a pH of at least 8.0 in a 0.5% by weight aqueous solution containing a mixture of AS and LAS surfactants and cationic surfactants of the formula: R.sup.1 R.sup.2 R.sup.3 R.sup.4 N+X.sup.- in which R.sup.1 is a hydroxyalkyl group having no greater than 6 carbon atoms; each of R.sup.2 and R.sup.3 is independently selected from C.sub.1 -C.sub.4 alkyl or alkenyl; R.sup.4 is one or mixtures of more than one of C.sub.5-11 alkyl or alkenyl; and X.sup.- is a counterion which does not substantially exchange with a hydroxide ion at 20.degree. C. in a 0.5% by weight solution of the detergent composition.Type: GrantFiled: April 19, 1999Date of Patent: July 11, 2000Assignee: The Procter & Gamble CompanyInventors: Stephen Wayne Heinzman, Robin Gibson Hall, Peter Gerard Gray
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Patent number: 6008178Abstract: There is provided a detergent composition comprising: a) from 1% to 95% by weight of a surfactant system comprising an anionic surfactant and a cationic ester surfactant, other than N,N-di(2-stearoyloxyethyl)-N-(2-hydroxyethyl)-N-methyl ammonium chloride, present in a weight ratio of said anionic surfactant to said cationic ester surfactant of 2.5:1 to 25:1; and b) from 0.0001% to 5% by weight of a proteolytic enzyme, wherein the % weight of proteolytic enzyme in the formulation is based on an enzyme activity of 4 Knpu/g of the enzyme particle, and wherein the weight ratio of said anionic surfactant to said proteolytic enzyme is at least 1.5:1.Type: GrantFiled: December 22, 1997Date of Patent: December 28, 1999Assignee: Procter & Gamble CompanyInventors: Gerard Marcel Baillely, Robin Gibson Hall, Christian Leo Marie Vermote
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Patent number: 5948744Abstract: Detergent compositions comprise, by weight, from 0.01% to 10% of a nonionic polysaccharide ether having a degree of polymerization of at least 100, and from 0.01% to 5% of a soil release agent. The soil release agent comprises at least one oxyalkylene unit and at least one terephthalate or substituted terephthalate unit and has a molecular weight of less than 10,000. The detergent composition comprises the polysaccharide ether and the soil release agent in a weight ratio of from 0.1:1 to 20:1.Type: GrantFiled: May 29, 1997Date of Patent: September 7, 1999Inventors: Gerard Marcel Baillely, Nour-Eddine Guedira, Robin Gibson Hall
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Patent number: 5919271Abstract: The invention relates to a detergent composition which comprises a nonionic polysaccharide ether, a surfactant, a dye transfer inhibition agent, a cellulase enzyme and a chelating agents. In addition the invention further relates to a method of treating fabrics with the detergent composition.Type: GrantFiled: June 30, 1997Date of Patent: July 6, 1999Assignee: Procter & Gamble CompanyInventors: Gerard Marcel Baillely, Robin Gibson Hall, Nour-Eddine Guedira
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Patent number: 5902782Abstract: Detergent compositions comprising polyamino acid compounds and salts thereof are provided. More particularly, detergent compositions containing a polyamino acid compound/protein particle comprising at least one polyamino acid compound coated with at least one protein, detergent compositions containing a polyamino acid compound/protein particle comprising at least one protein coated with at least one polyamino acid compound, and detergent compositions containing a polyamino acid compound/protein agglomerate are provided. The polyamino acid compound/protein particle and/or agglomerate resists degradation of the polyamino acid compound.Type: GrantFiled: February 5, 1998Date of Patent: May 11, 1999Assignee: Procter & Gamble CompanyInventors: Robin Gibson Hall, Alan David Willey
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Patent number: 5851235Abstract: The present invention relates to a detergent composition comprising an amylase enzyme in combination with a nonionic polysaccharide ether for improved stain removal performance.Type: GrantFiled: July 16, 1997Date of Patent: December 22, 1998Assignee: The Procter & Gamble CompanyInventors: Gerard Marcel Baillely, Nour-Eddine Guedira, Robin Gibson Hall
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Patent number: 5843878Abstract: Detergent compositions comprising anionic ethoxylated or propoxylated hydroxy ethane and propane sulfonate, NaO.sub.3 SCH.sub.2 CH.sub.2 CH.sub.2 --O(CH.sub.2 CH.sub.2 O).sub.n -- end-capped esters useful as soil release agents. The esters further contain terephthalate units, oxy-1,2-alkyleneoxy units (oxyethyleneoxy units preferred), and sulfoisophthalate units.Type: GrantFiled: February 7, 1996Date of Patent: December 1, 1998Assignee: Procter & Gamble CompanyInventors: Eugene Paul Gosselink, Robert Ya-Lin Pan, Robin Gibson Hall
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Patent number: 5756445Abstract: A granular detergent component having a bulk density of less than 400 g/l comprises from 20% to 50%, by weight, of aluminosilicate, optionally up to 50%, by weight, of a co-filler, and 0.05% to 2%, by weight, of anionic surfactant, preferably C14-C20 alkyl sulphate. The low bulk density component is preferably mixed with other components such as percarbonate, silicate, layered silicate, carbonate, bicarbonate, sesquicarbonate, sulphate, citrate and mixtures thereof to provide a granular detergent composition.Type: GrantFiled: July 30, 1996Date of Patent: May 26, 1998Assignee: The Proctor & Gamble CompanyInventors: Andrew Dorset, Robin Gibson Hall
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Patent number: 5756447Abstract: A cleaning composition contains (a) a detersive surfactant and (b) a poly(amino acid) compound or a precursor thereof, the said component (b) being protected from contact with a level of alkalinity as would cause degradation thereof. The component (b) may be stabilized by, for example, coating it with an organic acid compound or with a film-forming polymer; by agglomerating it with a controlled level of alkaline or alkaline-reacting compound (e.g. sodium carbonate); by spray-granulating it in admixture with a nonionic surfactant; by encapsulating it with a silicone-based resin; or by incorporating it in a composition that is non-alkaline. The storage stability of the compositions is thereby improved.Type: GrantFiled: December 19, 1996Date of Patent: May 26, 1998Assignee: The Procter & Gamble CompanyInventor: Robin Gibson Hall