Patents Examined by Mark A. Buscher
  • Photographic recording material and process for the production of photographic images
    Patent number: 4906557
    Abstract: Improved photographic recording materials contain silver halide grains having at least two zones differing in their halide composition and, as stabilizer, a compound corresponding to the formula ##STR1##
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: March 6, 1990
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Manfred Becker, Reinhart Matejec, Hans hlschlager
  • PMGI bi-layer lift-off process
    Patent number: 4814258
    Abstract: An effective bi-layer photoresist structure comprising a bottom planarization layer or PMGI and a top photoresist imaging layer which eliminates an intermixing layer between the top photoresist imaging layer and the bottom planarization layer, and provides a desired undercut profile between the two layers to insure efficient lift-off for gate fabrication, said undercut profile formed due to the solubility effect of a solvent soak on the two layers.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: March 21, 1989
    Assignee: Motorola Inc.
    Inventor: Gordon Tam