Patents by Inventor Chanchal Kumar Ghosh
Chanchal Kumar Ghosh 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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Publication number: 20030078179Abstract: The present invention relates to cleaning compositions comprising a protease variant.Type: ApplicationFiled: January 15, 2002Publication date: April 24, 2003Applicant: The Procter & Gamble CompanyInventors: Chanchal Kumar Ghosh, Andre Cesar Baeck, Ryohei Ohtani, Alfred Busch, Michael Stanford Showell, Ayrookaran J. Poulose, Volker Schellenberger, James T. Kellis, Christian Paech, Joanne Nadherny, Donald P. Naki, Katherine D. Collier, Robert M. Caldwell
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Publication number: 20020176982Abstract: Materials for coating, coating compositions, methods and articles of manufacture comprising a nanoparticle system or employing the same to impart surface modifying benefits for all types of hard surfaces are disclosed. In some embodiments, dispersement of nanoparticles in a suitable carrier medium allows for the creation of coating compositions, methods and articles of manufacture that create multi-use benefits to modified hard surfaces. In some embodiments, actively curing the coating composition on the hard surfaces, including, but not limited to by radiative heating the air surrounding the hard surface with the coating thereon can be used to increase the durability of the hard surface coating.Type: ApplicationFiled: December 13, 2001Publication date: November 28, 2002Applicant: The Procter & Gamble CompanyInventors: Robert Henry Rohrbaugh, Michael Ray McDonald, John David Carter, Eugene Paul Gosselink, Chanchal Kumar Ghosh, Helen Frances O'Connor, Heather Anne Liddle, Marc Francois Evers, Morgan Thomas Leahy, Alan Scott Goldstein, Brian Joseph Loughnane
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Publication number: 20020172773Abstract: Rinse aid materials for coating, coating compositions, methods and articles of manufacture for use in automatic dishwashing appliances comprising a nanoparticle system or employing the same to impart surface modifying benefits for all types of dishware surfaces are disclosed. In some embodiments, dispersement of nanoparticles in a suitable carrier medium allows for the creation of rinse aid surface coating compositions, methods and articles of manufacture that create multi-use benefits to modified dishware surfaces. These surface modifications can produce long lasting or semi-permanent multi-use benefits that include at least one of the following improved surface properties: wetting and sheeting, uniform drying, anti-spotting, anti-staining, anti-filming, self cleaning, and durability benefits, relative to dishware surfaces unmodified with such nanoparticle systems.Type: ApplicationFiled: December 13, 2001Publication date: November 21, 2002Applicant: The Procter & Gamble CompanyInventors: Chanchal Kumar Ghosh, William Michael Scheper, Robert Henry Rohrbaugh, Michael Ray McDonald, John David Carter, Eugene Paul Gosselink
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Publication number: 20020165111Abstract: The present invention solves the problem of soil and dirt becoming entrained in cellulosic material loosened and removed from fabric during washing wherein said dirt and soil is entrapped by the cellulosic material and re-deposited onto the fabric surface.Type: ApplicationFiled: February 21, 2001Publication date: November 7, 2002Inventor: Chanchal Kumar Ghosh
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Patent number: 6472359Abstract: The present invention solves the problem of soil and dirt becoming entrained in cellulosic material loosened and removed from fabric during washing wherein said dirt and soil is entrapped by the cellulosic material and re-deposited onto the fabric surface. The compositions of the present invention comprise: a) from about 0.01% by weight, of a zwitterionic polyamine which comprises a polyamine backbone, said backbone comprising two or more amino units wherein at least one of said amino units is quaternized and wherein at least one amino unit is substituted by one or more moieties capable of having an anionic charge wherein further the number of amino unit substitutions which comprise said anionic moiety is less than or equal to the number of quaternized backbone amino units; b) from about 0.00005% by weight, of a xyloglucanase enzyme; c) from about 0.Type: GrantFiled: February 21, 2001Date of Patent: October 29, 2002Assignee: The Procter & Gamble CompanyInventor: Chanchal Kumar Ghosh
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Publication number: 20020128167Abstract: The present invention relates to cleaning compositions comprising a protease variant.Type: ApplicationFiled: August 6, 2001Publication date: September 12, 2002Inventors: Chanchal Kumar Ghosh, Andre Cesar Baeck, Ryohei Ohtani, Alfred Busch, Michael Stanford Showell, Ayrookaran J. Poulose, Volker Schellenberger, James T. Kellis, Christian Paech, Joanne Nadherny, Donald P. Naki, Katherine D. Collier, Robert M. Caldwell
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Patent number: 6440717Abstract: The present invention relates to subtilisin BPN′ variants comprising at least one or more amino acid positions having a different amino acid than that occurring in wild-type subtilisin BPN′ (i.e., substitution) at specifically identified positions, whereby the BPN′ variant has decreased adsorption to, and increased hydrolysis of, an insoluble substrate as compared to wild-type subtilisin BPN′. The present invention further relates to various cleaning compositions comprising such BPN′ variants.Type: GrantFiled: March 2, 1995Date of Patent: August 27, 2002Assignee: The Procter & Gamble CompanyInventors: Philip Frederick Brode, III, Bobby Lee Barnett, Donn Nelton Rubingh, Chanchal Kumar Ghosh
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Patent number: 6436690Abstract: The present invention relates to subtilisin BPN′ variants having a modified amino acid sequence of wild-type BPN′ amino acid sequence, the wild-type amino acid sequence comprising a first loop region, a second loop region, a third loop region, a fourth loop region and a fifth loop region; wherein the modified amino acid sequence comprises different amino acids than that occurring in wild-type subtilisin BPN′ (i.e., substitution) at specifically identified positions in one or more of the loop regions whereby the BPN′ variant has decreased adsorption to, and increased hydrolysis of, an insoluble substrate as compared to the wild-type subtilisin BPN′. The present invention also relates to the genes encoding such subtilisin BPN′ variants. The present invention also relates to compositions comprising such subtilisin BPN′ variants for cleaning a variety of surfaces.Type: GrantFiled: March 3, 1995Date of Patent: August 20, 2002Assignee: The Procter & Gamble CompanyInventors: Philip Frederick Brode, III, Bobby Lee Barnett, Donn Nelton Rubingh, Chanchal Kumar Ghosh
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Patent number: 6376450Abstract: The present invention relates to cleaning compositions comprising a protease variant.Type: GrantFiled: April 20, 2000Date of Patent: April 23, 2002Inventors: Chanchal Kumar Ghosh, AndréCesar Baeck, Ryohei Ohtani, Alfred Busch, Michael Stanford Showell, Ayrookaran J. Poulose, Volker Schellenberger, James T. Kellis, Jr., Christian Paech, Joanne Nadherny, Donald P. Naki, Katherine D. Collier, Robert M. Caldwell
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Publication number: 20020045010Abstract: Materials for coating, coating compositions, methods and articles of manufacture comprising a nanoparticle system or employing the same to impart surface modifying benefits for all types of inanimate hard surfaces are disclosed. In some embodiments, dispersement of nanoparticles in a suitable carrier medium allows for the creation of coating compositions, methods and articles of manufacture that create multi-use benefits to modified hard surfaces. These surface modifications can produce long lasting or semi-permanent multi-use benefits that include at least one of the following improved surface properties: wetting and sheeting, quick drying, uniform drying, soil removal, self-cleaning, anti-spotting, anti-soil deposition, cleaner appearance, enhanced gloss, enhanced color, minor surface defect repair, smoothness, anti-hazing, modification of surface friction, release of actives and transparency, relative to hard surfaces unmodified with such nanoparticle systems.Type: ApplicationFiled: June 7, 2001Publication date: April 18, 2002Applicant: The Procter & Gamble CompanyInventors: Robert Henry Rohrbaugh, Michael Ray McDonald, John David Carter, Eugene Paul Gosselink, Chanchal Kumar Ghosh, Glenn Thomas Jordan, Helen Frances O'Connor, Heather Anne Liddle, Marc Francois Evers
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Patent number: 6121226Abstract: Cotton soil release polymers comprising water soluble and/or dispersible, modified polyamines having functionalized backbone moieties and improved stability toward bleach. Also, laundry detergent compositions comprising these cotton soil release polymers having enhanced hydrophilic soil removal benefits in combination with a protease enzyme system are provided.Type: GrantFiled: July 16, 1999Date of Patent: September 19, 2000Assignee: The Procter & Gamble CompanyInventors: Eugene Paul Gosselink, Kenneth Nathan Price, Chanchal Kumar Ghosh
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Patent number: 6066611Abstract: The invention herein provides bleaching compositions comprising a protease enzyme which is a carbonyl hydrolase variant having an amino acid sequence not found in nature, which is derived by replacement of a plurality of amino acid residues of a precursor carbonyl hydrolase with different amino acids, wherein said plurality of amino acid residues replaced in the precursor enzyme correspond to position +76 in combination with one or more of the following residues: +99, +101, +103, +104, +107, +123, +27, +105, +109, +126, +128, +135, +156, +166, +195, +197, +204, +206, +210, +216, +217, +218, +222, +260, +265, and/or +274, where the numbered positions corresponds to naturally-occurring subtilisin from Bacillus amyloliquefaciens or to equivalent amino acid residues in other carbonyl hydrolases or subtilisins (such as Bacillus lentus subtilisin) and a bleaching agent.Type: GrantFiled: May 1, 1997Date of Patent: May 23, 2000Assignee: The Procter & Gamble CompanyInventors: Chanchal Kumar Ghosh, Michael Eugene Burns, David Neil DiGiulio, Edward Eugene Getty, Richard Timothy Hartshorn, Alan David Willey, Philip F. Brode, Bobby L. Barnett, Donn N. Rubingh
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Patent number: 6017871Abstract: The present invention relates to cleaning compositions comprising protease enzyme which is a carbonyl hydrolase variant having an amino acid sequence not found in nature, which is derived by replacement of a plurality of amino acid residues of a precursor carbonyl hydrolase with different amino acids, wherein said plurality of amino acid residues replaced in the precursor enzyme correspond to position +76 in combination with one or more of the following residues: +99, +101, +103, +104, +107, +123, +27, +105, +109, +126, +128, +135, +156, +166, +195, +197, +204, +206, +210, +216, +217, +218, +222, +260, +265, and/or +274, where the numbered positions corresponds to naturally-occurring subtilisin from Bacillus amyloliquefaciens or to equivalent amino acid residues in other carbonyl hydrolases or subtilisins (such as Bacillus lentus subtilisin).Type: GrantFiled: July 22, 1997Date of Patent: January 25, 2000Assignee: The Procter & Gamble CompanyInventors: Andre Baeck, Chanchal Kumar Ghosh, Thomas Paul Graycar, Richard Ray Bott, Lori Jean Wilson, Philip Frederick Brode, Bobby Lee Barnett, Donn Nelton Rubingh
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Patent number: 5998350Abstract: The present invention relates to bleaching and detergent compositions comprising conventional detergent ingredients, bleaching systems with one or more bleach activators. Preferred bleaching activators are amido-derived bleach activators and/or N-acyl caprolactam bleach activators. The invention also relates to methods of using the detergent compositions.Type: GrantFiled: September 6, 1996Date of Patent: December 7, 1999Assignee: The Procter & Gamble CompanyInventors: Michael Eugene Burns, Alan David Willey, Jerome Howard Collins, Richard Timothy Hartshorn, Chanchal Kumar Ghosh
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Patent number: 5932532Abstract: Bleaching and cleaning compositions comprising a bleaching compound, one or more bleach activators, and protease enzymes are provided. Thus, laundry detergent compositions which comprise protease, perborate or percarbonate and activators such as benzoyl caprolactain exhibit improved dingy clean-up performance.Type: GrantFiled: September 16, 1997Date of Patent: August 3, 1999Assignee: Procter & Gamble CompanyInventors: Chanchal Kumar Ghosh, Gayle Marie Frankenbach, Catherine Michelle Quinn
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Patent number: 5858948Abstract: Liquid laundry detergent compositions comprising water soluble and/or dispersible, modified polyamines having functionalized backbone moieties which provide cotton soil release benefits (optionally in combination with non-cotton soil release agents) and protease enzymes.Type: GrantFiled: April 22, 1997Date of Patent: January 12, 1999Assignee: Procter & Gamble CompanyInventors: Chanchal Kumar Ghosh, Sanjeev Krishnadas Manohar, Eugene Paul Gosselink, Randall Alan Watson
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Patent number: 5679630Abstract: The present invention relates to cleaning compositions comprising subtilisin proteases from Bacillus lentus having the following alterations: N76D, S103A and V104I, where the numbering is based on the corresponding positions in the subtilisin from Bacillus amyloliquefaciens.Type: GrantFiled: October 13, 1994Date of Patent: October 21, 1997Assignee: The Procter & Gamble CompanyInventors: Andre Baeck, Chanchal Kumar Ghosh, Thomas Paul Graycar, Richard Ray Bott, Lori Jean Wilson, Philip Frederick Brode, Bobby Lee Barnett, Donn Nelton Rubingh
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Patent number: 5677272Abstract: The invention herein provides bleaching compositions comprising a protease enzyme which is a carbonyl hydrolase variant having an amino acid sequence not found in nature, which is derived by replacement of a plurality of amino acid residues of a precursor carbonyl hydrolase with different amino acids, wherein said plurality of amino acid residues replaced in the precursor enzyme correspond to position +76 in combination with one or more of the following residues: +99, +101, +103, +104, +107, +123, +27, +105, +109, +126, +128, +135, +156, +166, +195, +197, +204, +206, +210, +216, +217, +218, +222, +260, +265, and/or +274, where the numbered positions corresponds to naturally-occurring subtilisin from Bacillus amyloliquefaciens or to equivalent amino acid residues in other carbonyl hydrolases or subtilisins (such as Bacillus lentus subtilisin) and a bleaching agent.Type: GrantFiled: October 13, 1994Date of Patent: October 14, 1997Assignee: The Procter & Gamble CompanyInventors: Chanchal Kumar Ghosh, Michael Eugene Burns, David Neil DiGiulio, Edward Eugene Getty, Richard Timothy Hartshorn, Alan David Willey, Philip F. Brode, Bobby L. Barnett, Donn N. Rubingh