Patents by Inventor Charles Kienzle

Charles Kienzle 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).

  • Method of polymerizing styrene
    Patent number: 4281067
    Abstract: By using alpha,alpha'-bis-t-butylperoxydiisopropylbenzene (TDB) as an organic peroxide synergist in making expandable polystyrene having a K value of 55-59 and containing an organic bromide reaction mixture compatible with the polymerization (such as hexabromocyclododecane), excellent results are obtained. Specifically, foams of overall improved properties, namely in flammability, collapse and shrinkage, are obtained.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: July 28, 1981
    Assignee: BASF Wyandotte Corporation
    Inventors: Charles Kienzle, Stanley E. Gebura, John W. Boghosian