Patents by Inventor Hao-Jan Ling

Hao-Jan Ling 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).

  • Uretedione derivative, curable resin composition comprising the same, and process for producing the same
    Patent number: 6077960
    Abstract: A novel uretedione derivative used as a curing agent for aqueous-based polyurethane and a process for producing the same are disclosed. The uretedione derivative contains uretedione and aziridine functional groups which are active toward the amino and the carboxy groups of hydrolyzed polyurethane in an aqueous phase.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: June 20, 2000
    Assignee: Chinese Petroleum Corporation
    Inventors: Hao-Jan Ling, Kan-Nan Chen, Jian-Zei Lai, Yun-Shan Lin