Patents by Inventor Chris S. Griggs

Chris S. Griggs 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).

  • Chemical pulping of chitinous biomass for chitin
    Patent number: 10100131
    Abstract: Methods of separating chitin from a chitinous biomass that contains chitin and non-chitin material by a chemical pulping process that uses a protic ionic liquid or a composition comprising acid and base precursor molecules are described. Also described are methods for purifying chemically pulped chitin resulting in a pure chitin material with a high molecular weight and a higher degree of acetylation in comparison to traditional pulping and ionic liquid extraction based methods.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: October 16, 2018
    Assignee: The Board of Trustees of The University of Alabama
    Inventors: Patrick S. Barber, Chris S. Griggs, Robin D. Rogers, Gabriela Gurau, Julia L. Shamshina
  • Coagulation of biopolymers from ionic liquid solutions using CO
    Patent number: 9663589
    Abstract: Disclosed herein are processes for providing a biopolymer from a biomass or source of chitin using ionic liquids. The processes involve contacting a biomass or source of chitin with an ionic liquid to produce a biopolymer comprising solution and precipitating the biopolymer from the solution with supercritical CO2, gaseous CO2, or combinations thereof.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: May 30, 2017
    Assignees: The Board of Trustees of The University of Alabama, The Intellectual Property Office of Institute of Process Engineering, Chinese Academy of Sciences
    Inventors: Robin D. Rogers, Patrick S. Barber, Chris S. Griggs, Gabriela Gurau, Xingmei Lu, Suojiang Zhang
  • CHEMICAL PULPING OF CHITINOUS BIOMASS FOR CHITIN
    Publication number: 20160060363
    Abstract: Methods of separating chitin from a chitinous biomass that contains chitin and non-chitin material by a chemical pulping process that uses a protic ionic liquid or a composition comprising acid and base precursor molecules are described. Also described are methods for purifying chemically pulped chitin resulting in a pure chitin material with a high molecular weight and a higher degree of acetylation in comparison to traditional pulping and ionic liquid extraction based methods.
    Type: Application
    Filed: August 27, 2015
    Publication date: March 3, 2016
    Inventors: Patrick S. Barber, Chris S. Griggs, Robin D. Rogers, Gabriela Gurau, Julia L. Shamshina
  • COAGULATION OF BIOPOLYMERS FROM IONIC LIQUID SOLUTIONS USING CO2
    Publication number: 20150368371
    Abstract: Disclosed herein are processes for providing a biopolymer from a biomass or source of chitin using ionic liquids. The processes involve contacting a biomass or source of chitin with an ionic liquid to produce a biopolymer comprising solution and precipitating the biopolymer from the solution with supercritical CO2, gaseous CO2, or combinations thereof.
    Type: Application
    Filed: February 13, 2014
    Publication date: December 24, 2015
    Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ALABAMA
    Inventors: Robin D. Rogers, Patrick S. Barber, Chris S. Griggs, Gabriela Gurau, Xingmei Lu, Suojiang Zhang