Patents by Inventor Donald I. Christensen

Donald I. Christensen 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).

  • Plasticizer blends for polyvinyl butyral interlayers
    Patent number: 4144217
    Abstract: A polyvinyl butyral composition useful as an interlayer in architectural glazing units is plasticized by a blend of a di(C.sub.5 to C.sub.8 alkyl) adipate and a C.sub.3 to C.sub.6 alkyl benzyl phthalate.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: March 13, 1979
    Assignee: Monsanto Company
    Inventors: James A. Snelgrove, Donald I. Christensen