Patents by Inventor Jerry Chien-I Chao

Jerry Chien-I Chao 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).

  • Process for using ester plasticized polyurethanes for sealing electrical devices
    Patent number: 4705724
    Abstract: A plasticized polyurethane gel system comprising the reaction product of an isocyanate compound and a polyol in the presence of an ester plasticizer compound having a total solubility parameter of between about 8.3 and 8.9 or between about 9.1 and 9.7. Said polyurethane systems are cured, cross-linked, non-spewing, grease compatible, and reenterable. This extended polyurethane is further characterized as having superior insulating properties so that it can be used of repairing, encapsulating or reclaiming electrical or telecommunication cables as well as for hard volume encapsulants or general elastomer use.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: November 10, 1987
    Assignee: CasChem, Inc.
    Inventors: William J. Downey, Melvin Brauer, Jerry Chien-I Chao