Patents by Inventor James T. Kellis

James T. Kellis 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).

  • Publication number: 20200299618
    Abstract: The present invention provides consumer products comprising a serine protease variant, more specifically subtilisin variants produced there from. Specifically, the present invention provides consumer products comprising a serine protease variant, more specifically a subtilisin variant having one or more substitutions as compared to a reference serine protease. In addition, the present invention provides methods of making such compositions and methods of treating surfaces, particularly fabric surfaces comprising contacting a surface with an aqueous liquor comprising a serine protease variant, more specifically subtilisin variants and an adjunct material.
    Type: Application
    Filed: June 4, 2020
    Publication date: September 24, 2020
    Inventors: Philip Frank SOUTER, Euan John MAGENNIS, Glenn Steven WARD, Neelam S. AMIN, Katherine AUGUSTYN, Joshua R. BASLER, Luis Gustavo CASCAO-PEREIRA, Katherine D. COLLIER, Edward M. CONCAR, David A. ESTELL, James T. KELLIS, Alexander PISARCHIK, Ayrookaran Joseph POULOSE, Jian YAO
  • Publication number: 20160362641
    Abstract: The present invention provides consumer products comprising a serine protease variant, more specifically subtilisin variants produced there from. Specifically, the present invention provides consumer products comprising a serine protease variant, more specifically a subtilisin variant having one or more substitutions as compared to a reference serine protease. In addition, the present invention provides methods of making such compositions and methods of treating surfaces, particularly fabric surfaces comprising contacting a surface with an aqueous liquor comprising a serine protease variant, more specifically subtilisin variants and an adjunct material.
    Type: Application
    Filed: June 9, 2016
    Publication date: December 15, 2016
    Inventors: Philip Frank SOUTER, Euan John MAGENNIS, Glenn Steven WARD, Neelam S. AMIN, Katherine AUGUSTYN, Joshua R. BASLER, Luis Gustavo CASCAO-PEREIRA, Katherine D. COLLIER, Edward M. CONCAR, David A. ESTELL, James T. KELLIS, Alexander PISARCHIK, Ayrookaran Joseph POULOSE, Jian YAO
  • Publication number: 20160083710
    Abstract: The present invention provides protease variants, compositions comprising protease variants, and methods of using such protease variants and compositions.
    Type: Application
    Filed: September 2, 2015
    Publication date: March 24, 2016
    Inventors: Joshua Roy Basler, Luis Gustavo Cacao-Pereira, David A. Estell, James T. Kellis, Alexander Pisarchik, Ayrookaran J. Poulose, Daniel Torres-Pazmino
  • Publication number: 20160032267
    Abstract: The present invention provides efficient methods for obtaining a protein with one or more beneficial attributes in industrial, consumer or pharmaceutical applications. In some preferred embodiments, the present invention provides methods for producing superior enzymes for a given application through screening an abbreviated set of candidate enzymes.
    Type: Application
    Filed: August 7, 2015
    Publication date: February 4, 2016
    Applicant: DANISCO US INC.
    Inventors: Luis G. Cascao-Pereira, David A. Estell, James T. Kellis, Ayrookaran J. Poulose
  • Publication number: 20160010072
    Abstract: The present invention provides engineered protease variants. In particular, the protease variants comprise combinable mutations at selected surface positions that affect the charge and/or hydrophobicity of the enzyme to enhance at least one desired property of the resulting variant enzyme in a chosen application. Compositions comprising the protease variants, and methods for using the same are also provided.
    Type: Application
    Filed: June 29, 2015
    Publication date: January 14, 2016
    Inventors: Wolfgang Aehle, Luis G. Cascao-Pereira, David A. Estell, Frits Goedegebuur, James T. Kellis, Ayrookaran J. Poulose, Brian F. Schmidt
  • Patent number: 9133425
    Abstract: The present invention provides efficient methods for obtaining a protein with one or more beneficial attributes in industrial, consumer or pharmaceutical applications. In some preferred embodiments, the present invention provides methods for producing superior enzymes for a given application through screening an abbreviated set of candidate enzymes.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: September 15, 2015
    Assignee: Danisco US Inc.
    Inventors: Luis G. Cascao-Pereira, David A. Estell, James T. Kellis, Ayrookaran J. Poulose
  • Publication number: 20150159147
    Abstract: The present invention provides variant subtilisins and compositions comprising at least one variant subtilisin set forth herein, as well as methods for using these variants and compositions. In some embodiments, the present invention provides variant subtilisins suitable for laundry cleaning applications.
    Type: Application
    Filed: December 19, 2014
    Publication date: June 11, 2015
    Applicant: Danisco US Inc.
    Inventors: Joshua R. Basler, Luis G. Cascao-Pereira, David A. Estell, James T. Kellis
  • Publication number: 20150064767
    Abstract: The present invention provides variant subtilisins and compositions comprising at least one variant subtilisin set forth herein, as well as methods for using these variants and compositions. In some embodiments, the present invention provides variant subtilisins suitable for laundry cleaning applications.
    Type: Application
    Filed: November 10, 2014
    Publication date: March 5, 2015
    Applicant: DANISCO US INC.
    Inventors: Joshua R. Basler, Luis G. Cascao-Pereira, David A. Estell, James T. Kellis
  • Publication number: 20080274938
    Abstract: Novel protease variants derived from the DNA sequences of naturally-occurring or recombinant non-human proteases are disclosed. The variant proteases, in general, are obtained by in vitro modification of a precursor DNA sequence encoding the naturally-occurring or recombinant protease to generate the substitution of a plurality of amino acid residues in the amino acid sequence of a precursor protease. Protease variants are provided that contain substitutions of the amino acids at one or more residue positions so that the substitution alters the charge at that position to make the charge more negative or less positive compared to a precursor protease and thus the protease variant is more effective in a low detergent concentration system than a precursor protease.
    Type: Application
    Filed: October 27, 2006
    Publication date: November 6, 2008
    Inventors: Ayrookaran J. Poulose, Volker Schellenberger, James T. Kellis, Paech Christian, Joanne Nadherny, Donald P. Naki, Katherine D. Collier, Robert M. Caldwell
  • Publication number: 20080176313
    Abstract: Novel enzyme variants including protease variants derived from the DNA sequences of naturally-occurring or recombinant non-human proteases are disclosed. The variant proteases, in general are obtained by in vitro modification of a precursor DNA sequence encoding the naturally-occurring or recombinant protease to generate the substitution of a plurality of amino acid residues in the amino acid sequence of a precursor protease. Such variant proteases have properties which are different from those of the precursor protease, such as altered wash performance. The substituted amino acid residue correspond to positions 27, 45, 170, 181, 251 and 271 of Bacillus amyloliquefaciens subtilisin. Additional variants comprising at least one additional substitution at a position selected from 1, 14, 49, 61, 87, 100, 102, 118, 128, 204 and 258 of Bacillus amyloliquefaciens subtilisin are also described.
    Type: Application
    Filed: October 30, 2007
    Publication date: July 24, 2008
    Inventors: Ayrookaran J. Poulose, David A. Estell, James T. Kellis, Richard R. Bott
  • Publication number: 20080124783
    Abstract: Novel enzyme variants including protease variants derived from the DNA sequences of naturally-occurring or recombinant non-human proteases are disclosed. The variant proteases, in general, are obtained by in vitro modification of a precursor DNA sequence encoding the naturally-occurring or recombinant protease to generate the substitution of a plurality of amino acid residues in the amino acid sequence of a precursor protease. Such variant proteases have properties which are different from those of the precursor protease, such as altered wash performance. The substituted amino acid residue correspond to positions 27, 45, 170, 181, 251 and 271 of Bacillus amyloliquefaciens subtilisin. Additional variants comprising at least one additional substitution at a position selected from 1, 14, 49, 61, 87, 100, 102, 118, 128, 204 and 258 of Bacillus amyloliquefaciens subtilisin are also described.
    Type: Application
    Filed: October 30, 2007
    Publication date: May 29, 2008
    Inventors: Ayrookaran J. Poulose, David A. Estell, James T. Kellis, Richard R. Bott
  • Publication number: 20040261193
    Abstract: An improved method for assaying the wash performance of new enzymes and/or new detergent formulations is described
    Type: Application
    Filed: July 26, 2004
    Publication date: December 30, 2004
    Inventors: Volker Schellenberger, Donald P. Naki, Katherine D. Collier, James T. Kellis, Joanne Nadherny
  • Publication number: 20030228995
    Abstract: Novel protease variants derived from the DNA sequences of naturally-occurring or recombinant non-human proteases are disclosed. The variant proteases, in general, are obtained by in vitro modification of a precursor DNA sequence encoding the naturally-occurring or recombinant protease to generate the substitution of a plurality of amino acid residues in the amino acid sequence of a precursor protease. Protease variants are provided that contain substitutions of the amino acids at one or more residue positions so that the substitution alters the charge at that position to make the charge more negative or less positive compared to a precursor protease and thus the protease variant is more effective in a low detergent concentration system than a precursor protease.
    Type: Application
    Filed: April 25, 2003
    Publication date: December 11, 2003
    Inventors: Ayrookaran J. Poulose, Volker Schellenberger, James T. Kellis, Christian Paech, Joanne Nadherny, Donald P. Naki, Katherine D. Collier, Robert M. Caldwell
  • Publication number: 20030199068
    Abstract: A high throughput mutagenesis screening method selects sites for saturation scanning using protein structural considerations. Site-saturation libraries are created and screened using assays for sites having protein properties of interest. The sites are categorized for the properties of interest, trends, if any, are identified; and, a variant having a desired property is selected for additional library creation procedures. The additional libraries are created using feedback from the determined categories. One set of additional libraries repeats construction of the previous libraries using the feedback. A second set of additional libraries are new libraries created at sites that are expected to be beneficial based on the feedback. The categories may be coded, using color or other indicia, to allow easy identification of trends.
    Type: Application
    Filed: March 5, 2002
    Publication date: October 23, 2003
    Inventors: Richard R. Bott, James T. Kellis, Thomas B. Morrison
  • Publication number: 20030171543
    Abstract: A high throughput mutagenesis screening method selects sites for saturation scanning using protein structural considerations. Site-saturation libraries are created and screened using assays for sites having protein properties of interest. The sites are categorized for the properties of interest, trends, if any, are identified; and, a variant having a desired property is selected for additional library creation procedures. The additional libraries are created using feedback from the determined categories. One set of additional libraries repeats construction of the previous libraries using the feedback. A second set of additional libraries are new libraries created at sites that are expected to be beneficial based on the feedback. The categories may be coded, using color or other indicia, to allow easy identification of trends.
    Type: Application
    Filed: March 5, 2002
    Publication date: September 11, 2003
    Inventors: Richard R. Bott, James T. Kellis, Thomas B. Morrison
  • Publication number: 20030119690
    Abstract: Novel protease variants derived from the DNA sequences of naturally-occurring or recombinant non-human proteases are disclosed. The variant proteases, in general, are obtained by in vitro modification of a precursor DNA sequence encoding the naturally-occurring or recombinant protease to generate the substitution of a plurality of amino acid residues in the amino acid sequence of a precursor protease. Such variant proteases have properties which are different from those of the precursor protease, such as altered wash performance. The substituted amino acid residue correspond to positions 62, 212, 230, 232, 252 and 257 of Bacillus amyloliquefaciens subtilisin.
    Type: Application
    Filed: August 27, 2002
    Publication date: June 26, 2003
    Inventors: Ayrookaran J. Poulose, Volker Schellenberger, James T. Kellis, Christian Paech, Joanne Nadherny, Donald P. Naki, Katherine D. Collier, Robert M. Caldwell, Andre C. Baeck
  • Publication number: 20030082755
    Abstract: A method is provided for enzymatically modifying a polyester resin, film, fiber, yarn, fabric or textile to modify the characteristics thereof.
    Type: Application
    Filed: September 4, 2002
    Publication date: May 1, 2003
    Inventors: Wade Dyson, James T. Kellis, Ayrookaran J. Poulose, Mee-Young Yoon
  • Publication number: 20030078179
    Abstract: The present invention relates to cleaning compositions comprising a protease variant.
    Type: Application
    Filed: January 15, 2002
    Publication date: April 24, 2003
    Applicant: The Procter & Gamble Company
    Inventors: 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
  • Publication number: 20030073222
    Abstract: Novel protease variants derived from the DNA sequences of naturally-occurring or recombinant non-human proteases are disclosed. The variant proteases, in general, are obtained by in vitro modification of a precursor DNA sequence encoding the naturally-occurring or recombinant protease to generate the substitution of a plurality of amino acid residues in the amino acid sequence of a precursor protease. Such variant proteases have properties which are different from those of the precursor protease, such as altered wash performance.
    Type: Application
    Filed: November 2, 2001
    Publication date: April 17, 2003
    Inventors: Ayrookaran J. Poulose, Volker Schellenberger, James T. Kellis, Christian Paech, Joanne Nadherny, Donald P. Naki, Katherine D. Collier, Robert M. Caldwell, Andre C. Baeck
  • Publication number: 20030011625
    Abstract: An apparatus and method of controlling brightness of a display device by providing a brightness control current that is exponentially related to digital inputs, so as to maintain perceived uniformity in changes to the level of display brightness. One embodiment of the apparatus comprises at least one digital input, an attenuator which receives the digital input and a reference voltage, and which outputs an attenuated voltage based on the digital input; a voltage-to-current converting amplifier circuit converts the attenuated voltage to current; and a current mirror circuit connected to an LED array provides current to control the LED array, wherein the control current is substantially exponentially related to the at least one digital input. Another embodiment comprises an input trimming resistor network used to enhance the accuracy of the output current values by compensating for the circuit variances as additional current mirrors are added to the apparatus.
    Type: Application
    Filed: July 13, 2001
    Publication date: January 16, 2003
    Inventor: James T. Kellis