Patents by Inventor Harold D. Sullivan

Harold D. Sullivan 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).

  • Solvent system for forming films of photoimageable compositions
    Patent number: 5458921
    Abstract: To apply a photoimageable composition to a substrate, such as a printed circuit board, the photoimageable composition is dissolved in a solvent system which is a mixture of propylene glycol monomethylether and ethylene glycol butylether, acetate. The liquid solution is applied to the substrate. Then the photoimageable composition is dried to remove the solvent system and thereby produce a layer of the photoimageable composition on the substrate.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: October 17, 1995
    Assignee: Morton International, Inc.
    Inventors: James J. Briguglio, Kirk Johnson, Harold D. Sullivan