Patents by Inventor Rakesh Nambiar

Rakesh Nambiar 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: 20210253977
    Abstract: The disclosure relates to compositions comprising a polysaccharide derivative wherein the polysaccharide derivative comprises a polysaccharide substituted with a) at least one sulfate group; b) at least one sulfonate group; c) at least one thiosulfate group; or d) a combination thereof; wherein the polysaccharide is poly alpha-1,3-glucan, poly alpha-1,6-glucan, poly alpha-1,3-1,6-glucan, or a mixture thereof; and the polysaccharide derivative has a degree of substitution of about 0.001 to about 3. The compositions can be useful as anti-deposition and/or anti-graying agents in laundry detergents, and in home, personal care, and industrial applications.
    Type: Application
    Filed: June 19, 2019
    Publication date: August 19, 2021
    Inventors: Zhengzheng HUANG, Helen S M LU, Rakesh NAMBIAR, Jayme L. PAULLIN, Mark Robert SIVIK
  • Publication number: 20210171868
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Application
    Filed: October 29, 2020
    Publication date: June 10, 2021
    Inventors: Robert DiCosimo, Qiong Cheng, Rakesh Nambiar, Jayme L. Paullin, Mark Payne, Zheng You
  • Publication number: 20210171867
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Application
    Filed: November 18, 2020
    Publication date: June 10, 2021
    Inventors: Robert DiCosimo, Qiong Cheng, Rakesh Nambiar, Jayme L. Paullin, Mark S. Payne, Jahnavi Chandra Prasad, Zheng You
  • Publication number: 20210155719
    Abstract: Compositions comprising oxidized dextran compounds are disclosed herein. Oxidized dextran compounds are produced by contacting dextran under aqueous conditions with at least one N-oxoammonium salt, at least one periodate compound, and/or at least one peroxide compound.
    Type: Application
    Filed: September 23, 2020
    Publication date: May 27, 2021
    Inventors: Jayme L. Paullin, Rakesh Nambiar
  • Publication number: 20210110007
    Abstract: A method for remotely verifying a non-resident alien's identity, includes: receiving a request to establish a communication session from a user device; analyzing the request to determine whether the user device is compromised; in response to determining that the user device is not compromised, providing a page flow to the user device to solicit information from the non-resident alien, the information including identity information associated with a local foreign government identification document (ID), and other information not shown on the local foreign government ID; querying one or more foreign governmental data stores to identify foreign data associated with the non-resident alien based on a unique identifier associated with the local foreign government ID; comparing the information with the foreign data; and verifying an identity of the non-resident alien based on the comparing, wherein the verifying includes determining that at least one of the other information matches the foreign data.
    Type: Application
    Filed: November 18, 2019
    Publication date: April 15, 2021
    Inventors: Catherine Zhou, Rakesh Nambiar, Angela Mao
  • Publication number: 20210071217
    Abstract: Compositions are disclosed herein comprising at least one dextran ether compound that comprises uncharged, anionic, and/or cationic organic groups. The degree of substitution of one or more dextran ether compounds is about 0.0025 to about 3.0. Dextran from which the disclosed ether compounds can be derived can have a weight-average molecular weight of about 50-200 million Daltons and/or a z-average radius of gyration of about 200-280 nm. Also disclosed are methods of producing dextran ether compounds, as well as methods of using these ether compounds in various applications.
    Type: Application
    Filed: April 23, 2020
    Publication date: March 11, 2021
    Inventors: JAYME L. PAULLIN, RAKESH NAMBIAR
  • Patent number: 10876074
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: December 29, 2020
    Assignee: DuPont Industrial Biosciences USA, LLC
    Inventors: Robert DiCosimo, Qiong Cheng, Rakesh Nambiar, Jayme L. Paullin, Mark S Payne, Jahnavi Chandra Prasad, Zheng You
  • Patent number: 10865254
    Abstract: A hydrocolloid or aqueous solution comprising a poly alpha-1,3-glucan ether compound is disclosed having a viscosity of at least about 10 centipoise (cPs). The poly alpha-1,3-glucan ether compound in these compositions has a degree of substitution of about 0.05 to about 3.0. Also disclosed is a method for increasing the viscosity of a hydrocolloid or aqueous composition using a poly alpha-1,3-glucan ether compound.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: December 15, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Rahul B. Kasat, Jayme L. Paullin, Andrea M. Perticone, T. Joseph Dennes, Rakesh Nambiar, Michael W. Cobb
  • Patent number: 10844324
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: November 24, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Robert DiCosimo, Qiong Cheng, Rakesh Nambiar, Jayme L Paullin, Mark S Payne, Jahnavi Chandra Prasad, Zheng You
  • Publication number: 20200347152
    Abstract: Poly alpha-1,3-glucan ester compounds are disclosed herein with a degree of substitution of about 0.001 to about 3.0. Also disclosed are methods of producing poly alpha-1,3-glucan ester compounds using cyclic organic anhydrides.
    Type: Application
    Filed: April 2, 2020
    Publication date: November 5, 2020
    Inventors: Jayme L. Paullin, Rakesh Nambiar, Christian Peter Lenges
  • Patent number: 10822574
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: November 3, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Robert DiCosimo, Qiong Cheng, Rakesh Nambiar, Jayme L. Paullin, Mark S. Payne, Zheng You
  • Patent number: 10793838
    Abstract: Compositions are disclosed herein comprising poly alpha-1,3-1,6-glucan with a weight average degree of polymerization (DPw) of at least 1000. This glucan polymer comprises at least 30% alpha-1,3 linkages and at least 30% alpha-1,6 linkages. Further disclosed are glucosyltransferase enzymes that synthesize poly alpha-1,3-1,6-glucan. Ether derivatives of poly alpha-1,3-1,6-glucan and methods of using such derivatives as viscosity modifiers are also disclosed.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: October 6, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Jayme L. Paullin, Mark S. Payne, T. Joseph Dennes, Yefim Brun, Rakesh Nambiar, Thomas H. Scholz
  • Patent number: 10787524
    Abstract: Compositions comprising oxidized dextran compounds are disclosed herein. Oxidized dextran compounds are produced by contacting dextran under aqueous conditions with at least one N-oxoammonium salt, at least one periodate compound, and/or at least one peroxide compound.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: September 29, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Jayme L. Paullin, Rakesh Nambiar
  • Patent number: 10738266
    Abstract: Polysaccharides can be used to provide a liquid composition with desirable rheological properties while being compatible with other ingredients, such as enzymes, that may be used in formulating the liquid composition. The polysaccharides can be i) a colloidal dispersion of poly alpha-1,3-glucan, ii) poly alpha-1,3-glucan fibrids, iii) soy polysaccharide; or iv) a combination thereof.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: August 11, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Rakesh Nambiar, Jayme L. Paullin, Ji Yeon Huh, Natnael Behabtu
  • Patent number: 10639611
    Abstract: Compositions are disclosed herein comprising poly alpha-1,3-glucan or poly alpha-1,3-1,6-glucan polymer having an open-cell pore structure with an average pore size of about 100 nm to about 3000 nm in diameter. Such polymers have enhanced aqueous liquid absorption capacity, and can be comprised in various products having aqueous liquid absorption function. Methods of preparing glucan polymers of the compositions provided herein are also disclosed.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: May 5, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Natnael Behabtu, Rakesh Nambiar
  • Patent number: 10633683
    Abstract: Compositions are disclosed herein comprising at least one dextran ether compound that comprises uncharged, anionic, and/or cationic organic groups. The degree of substitution of one or more dextran ether compounds is about 0.0025 to about 3.0. Dextran from which the disclosed ether compounds can be derived can have a weight-average molecular weight of about 50-200 million Daltons and/or a z-average radius of gyration of about 200-280 nm. Also disclosed are methods of producing dextran ether compounds, as well as methods of using these ether compounds in various applications.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: April 28, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Jayme L. Paullin, Rakesh Nambiar
  • Publication number: 20190390138
    Abstract: The disclosure relates to products including a polysaccharide derivative wherein the polysaccharide derivative includes a polysaccharide substituted with at least one of: a) at least one sulfate group; b) at least one sulfonate group; c) at least one thiosulfate group; or d) a combination thereof; wherein the polysaccharide is poly alpha-1,3-glucan, poly alpha-1,6-glucan, poly alpha-1,3-1,6-glucan, or a mixture thereof; and the polysaccharide derivative has a degree of substitution of about 0.001 to about 3. The products can be useful as anti-deposition and/or anti-graying agents in laundry detergents, and in home care applications.
    Type: Application
    Filed: June 19, 2019
    Publication date: December 26, 2019
    Inventors: Mark Robert SIVIK, Zhengzheng HUANG, Helen S.M. LU, Rakesh NAMBIAR, Jayme L. PAULLIN
  • Patent number: 10479841
    Abstract: Compositions comprising oxidized soy polysaccharide compounds are disclosed herein. Oxidized soy polysaccharide compounds are produced by contacting soy polysaccharide under aqueous conditions with at least one N-oxoammonium salt, periodate compound, and/or peroxide compound.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: November 19, 2019
    Inventors: Jayme L. Paullin, Rakesh Nambiar, Tam H. Tran, Brian C. Pierce
  • Publication number: 20190322963
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Application
    Filed: May 20, 2019
    Publication date: October 24, 2019
    Inventors: ROBERT DICOSIMO, Qiong Cheng, Rakesh Nambiar, Jayme L. Paullin, Mark S. Payne, Jahnavi Chandra Prasad, Zheng You
  • Publication number: 20190270973
    Abstract: Compositions are disclosed herein comprising poly alpha-1,3-1,6-glucan with a weight average degree of polymerization (DPw) of at least 1000. This glucan polymer comprises at least 30% alpha-1,3 linkages and at least 30% alpha-1,6 linkages. Further disclosed are glucosyltransferase enzymes that synthesize poly alpha-1,3-1,6-glucan. Ether derivatives of poly alpha-1,3-1,6-glucan and methods of using such derivatives as viscosity modifiers are also disclosed.
    Type: Application
    Filed: April 12, 2019
    Publication date: September 5, 2019
    Inventors: Jayme L. Paullin, Mark S. Payne, T. Joseph Dennes, Yefim Brun, Rakesh Nambiar, Thomas H. Scholz