Patents by Inventor Daniel Ting-Man Wong

Daniel Ting-Man Wong 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).

  • Cyclic tri(phenylene disulfide) polymers and the production thereof
    Patent number: 4069205
    Abstract: A tri(phenylene disulfide) polymer composed of para- or meta-tri(phenylene disulfide) units and units selected from the group consisting of diphenyl ether, bis(phenoxybenzenesulfonyl)benzene and bis(phenoxybenzenesulfonyl)diphenyl ether, is linked together with bivalent radicals selected from the group consisting of isophthaloyl and terephthaloyl radicals. In another embodiment, the tri(phenylene disulfide) can be substituted with biphenylene-2,2'-disulfide.
    Type: Grant
    Filed: September 9, 1976
    Date of Patent: January 17, 1978
    Assignee: University Patents, Inc.
    Inventors: Carl S. Marvel, Daniel Ting-Man Wong