Patents by Inventor David C. Purpi

David C. Purpi 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).

  • Patent number: 4277567
    Abstract: Vinyl aromatic polymer compositions contain a flame-retarding amount of 1,1,2,3,4,4-hexabromobutene-2.
    Type: Grant
    Filed: December 10, 1973
    Date of Patent: July 7, 1981
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Donald A. Keyworth, David C. Purpi
  • Patent number: 4107230
    Abstract: 1,1,2,3,4,4-Hexabromobutene-2 is used to impart flame-retardance to epoxy resins, polyesters, and other thermosetting organic polymers that are normally susceptible to burning.
    Type: Grant
    Filed: May 8, 1974
    Date of Patent: August 15, 1978
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Roy G. Turnbo, David C. Purpi