Patents by Inventor Soke Meng Chan

Soke Meng Chan 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).

  • Composition and process for improving heat and weathering stability of segmented polyurethane polymers
    Patent number: 7642304
    Abstract: The present invention relates to the stabilization of segmented polyurethanes by the addition of a combination of antioxidants, benzofuranones and or sterically hindered amines and a hydrazine or hydrazide.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: January 5, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Soke Meng Chan, Chin Siong Goh, Muhamadzen Junaidi