Patents by Inventor Christine C. Berkefelt

Christine C. Berkefelt 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).

  • Curable compositions containing a polyepoxide and a halogenated bisphenol
    Patent number: 4604317
    Abstract: Curable compositions are disclosed which comprise a polyglycidyl ether such as the triglycidylether of tris(hydroxyphenyl)methane and a halogenated dihydric phenol such as tetrabromobisphenol A. These compositions can be cured by heating in the presence or absence of catalyst for reacting epoxy groups with phenolic hydroxyl groups such as 2-methyl imidazole. These compositions are particularly useful in the preparation of electrical laminates.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: August 5, 1986
    Assignee: The Dow Chemical Company
    Inventors: Jody R. Berman, Christine C. Berkefelt, Dale J. Aldrich