Patents by Inventor Xiubing Hu

Xiubing Hu 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).

  • Trimerization catalysts from sterically hindered salts and tertiary amines having isocyanate reactive groups
    Patent number: 10759892
    Abstract: The present invention provides trimerization catalyst compositions having a sterically hindered carboxylate salt used in combination with a tertiary amine catalysts having isocyanate reactive groups and methods to produce a polyisocyanurate/polyurethane foam using such trimerization catalyst compositions.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: September 1, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Boxun Leng, Juan Jesus Burdeniuc, James Douglas Tobias, Robert Hoffman, Xiubing Hu
  • TRIMERIZATION CATALYSTS FROM STERICALLY HINDERED SALTS AND TERTIARY AMINES HAVING ISOCYANATE REACTIVE GROUPS
    Publication number: 20180179318
    Abstract: The present invention provides trimerization catalyst compositions having a sterically hindered carboxylate salt used in combination with a tertiary amine catalysts having isocyanate reactive groups and methods to produce a polyisocyanurate/-polyurethane foam using such trimerization catalyst compositions.
    Type: Application
    Filed: June 18, 2015
    Publication date: June 28, 2018
    Inventors: Boxun Leng, Juan Jesus Burdeniuc, James Douglas Tobias, Robert Hoffman, Xiubing Hu