Patents by Inventor Cheng-Kuang Li

Cheng-Kuang Li 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).

  • Patent number: 11566107
    Abstract: An etheramine mixture comprising one or more polyether diamines, methods for its production, and its use as a curing agent for epoxy resins. The etheramine mixture may also be used in the preparation of polyamides and polyurea compounds.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: January 31, 2023
    Assignee: HUNTSMAN Petrochemical LLC
    Inventors: Howard P. Klein, Terry L. Renken, Cheng-Kuang Li
  • Patent number: 11542358
    Abstract: A catalyst system useful in the production of polyurethane and/or polyisocyanurate foams using hydrohaloolefin blowing agents.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: January 3, 2023
    Assignee: Huntsman Petrochemical LLC
    Inventors: Cheng-Kuang Li, Charles E. Serrano, Dianne Trang Pham, Robert A. Grigsby
  • Publication number: 20210017334
    Abstract: An etheramine mixture comprising one or more polyether diamines, methods for its production, and its use as a curing agent for epoxy resins. The etheramine mixture may also be used in the preparation of polyamides and polyurea compounds.
    Type: Application
    Filed: March 18, 2019
    Publication date: January 21, 2021
    Inventors: Howard P. Klein, Terry L. Renken, Cheng-Kuang Li
  • Publication number: 20200247938
    Abstract: A catalyst system useful in the production of polyurethane and/or polyisocyanurate foams using hydrohaloolefin blowing agents.
    Type: Application
    Filed: September 5, 2018
    Publication date: August 6, 2020
    Inventors: Cheng-Kuang Li, Charles E. Serrano, Dianne Trang Pham, Robert A. Grigsby
  • Publication number: 20110207873
    Abstract: A process for preparing a diaminoacetonitrile which includes reacting by contacting an amine comprising two primary amine groups with a cyanohydrin. The diaminoacetonitrile produced may subsequently be used in the production of polymers and/or as a curing agent for epoxy resins.
    Type: Application
    Filed: October 7, 2009
    Publication date: August 25, 2011
    Applicant: Huntsman Petrochemical LLC
    Inventors: Ralph M DiGuilio, Matthew W. Forkner, Cheng-Kuang Li
  • Patent number: 7736468
    Abstract: The present invention relates to a urethane-based coating having nanoparticles for improving the characteristics of a papermaking process belt, roll cover and belts used in textile applications. For example, the present invention improves resistance to flex fatigue, crack propagation, groove closure and wear characteristics of urethane coatings on such belts and roll coverings. The present invention also improves the resistance to water and oil permeation characteristics of urethane coated belts and roll coverings.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: June 15, 2010
    Assignee: Albany International Corp.
    Inventors: Cheng-Kuang Li, Crayton Gregory Toney
  • Patent number: 7413633
    Abstract: The present invention relates to a urethane-based coating having nanoparticles for improving the characteristics of a papermaking process belt, roll cover and belts used in textile applications. For example, the present invention improves resistance to flex fatigue, crack propagation, groove closure and wear characteristics of urethane coatings on such belts and roll coverings. The present invention also improves the resistance to water and oil permeation characteristics of urethane coated belts and roll coverings.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: August 19, 2008
    Assignee: Albany International Corp.
    Inventors: Cheng-Kuang Li, Crayton Gregory Toney
  • Publication number: 20080081179
    Abstract: The present invention relates to a urethane-based coating having nanoparticles for improving the characteristics of a papermaking process belt, roll cover and belts used in textile applications. For example, the present invention improves resistance to flex fatigue, crack propagation, groove closure and wear characteristics of urethane coatings on such belts and roll coverings. The present invention also improves the resistance to water and oil permeation characteristics of urethane coated belts and roll coverings.
    Type: Application
    Filed: July 20, 2007
    Publication date: April 3, 2008
    Inventors: Cheng-Kuang Li, Crayton Toney
  • Publication number: 20050208288
    Abstract: The present invention relates to a urethane-based coating having nanoparticles for improving the characteristics of a papermaking process belt, roll cover and belts used in textile applications. For example, the present invention improves resistance to flex fatigue, crack propagation, groove closure and wear characteristics of urethane coatings on such belts and roll coverings. The present invention also improves the resistance to water and oil permeation characteristics of urethane coated belts and roll coverings.
    Type: Application
    Filed: March 15, 2005
    Publication date: September 22, 2005
    Inventors: Cheng-Kuang Li, Crayton Toney