Patents by Inventor Gary M. Blumenstein

Gary M. Blumenstein 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).

  • Ferrocenium/alpha-cleavage photoinitiator systems for free radical polymerizable compositions
    Patent number: 4707432
    Abstract: A free radical polymerizable composition comprising a free radical polymerizable material and a photoinitiator system therefor comprising appropriate amounts of an alpha-cleavage or homolytic bond cleavage, photoinitiator and a ferrocenium salt, said composition being suitable for use in the preparation of protective layers and photographic images.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: November 17, 1987
    Assignee: Ciba-Geigy Corporation
    Inventors: Leslie R. Gatechair, Gary M. Blumenstein, Peter J. Schirmann