Patents by Inventor Chung Y. Lin

Chung Y. Lin 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).

  • Polyurethane foams manufactured with mixed gas/liquid blowing agents
    Patent number: 4996242
    Abstract: Disclosed are mixed halocarbon blowing agents comprising (1) halocarbons boiling below about 10.degree. C., (2) halocarbons boiling between 20.degree. C. and 35.degree. C., and (3) inert organic liquids having a boiling point from about 35.degree. C. to about 125.degree. C.Also disclossed are blends of the above mixed blowing agents with active hydrogen containing compounds, particularly polyols and the rigid closed cell foams prepared from such blends.Up to 60 percent reduction in hard halocarbons is realized with the mixed blowing agents.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: February 26, 1991
    Assignee: The Dow Chemical Company
    Inventor: Chung Y. Lin