Patents by Inventor Charles J. Sparkes

Charles J. Sparkes 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).

  • Flexible polyvinyl chloride plastics having improved flame retardancy and reduced smoke generating properties
    Patent number: 4341881
    Abstract: Flexible polyvinyl chloride having improved flame retardancy and reduced smoke generating properties. The plastics are characterized in that they contain about from 0.01 to 0.2 parts, by wt., based on the iron content, of a high molecular weight ferrocene derivative and about 0.1 to 20 parts, by wt., of antimony oxide per 100 parts of polyvinyl chloride resin. A composition comprising the ferrocene derivative and antimony oxide useful for preparing the improved plastic is also disclosed.
    Type: Grant
    Filed: April 19, 1979
    Date of Patent: July 27, 1982
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: John J. Kracklauer, Charles J. Sparkes