Patents by Inventor Ken Nagami

Ken Nagami 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).

  • Tabular silica dispersion and silver halide photographic light sensitive material
    Patent number: 6015656
    Abstract: A tabular silica dispersion is disclosed, which is obtained by mixing a tabular silica, gelatin, a cyclodextrin and a compound capable of crosslinking gelatin. Silver halide photographic materials are also disclosed, in which the tabular silica dispersion is incorporated into a silver halide emulsion layer or a light-insensitive hydrophilic colloidal layer.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: January 18, 2000
    Assignee: Konica Corporation
    Inventor: Ken Nagami
  • Silver halide photographic light sensitive material
    Patent number: 5792600
    Abstract: Disclosed is a silver halide photographic light sensitive material comprising a support and provided thereon, a light sensitive silver halide emulsion layer and a non-light sensitive hydrophilic binder layer, wherein at least one of the light sensitive silver halide emulsion layer and the non-light sensitive hydrophilic binder layer contains tabular silica particles covered with a hardened gelatin layer.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: August 11, 1998
    Assignee: Konica Corporation
    Inventor: Ken Nagami
  • Silver halide photographic element and processing method thereof
    Patent number: 5556738
    Abstract: A silver halide photographic element with enhanced sensitivity and improved pressure resistance is disclosed, comprising a support having, on at least one side thereof, hydrophilic colloidal layers including a light-sensitive silver halide emulsion layer and a nonlight-sensitive hydrophilic colloidal layer, wherein the nonlight-sensitive layer contains organic material-aggregation particles; and gelatin contained in the total hydrophilic colloidal layers provided on one side of the support amounts to a range of 1.3 to 2.5 g per m.sup.2.
    Type: Grant
    Filed: July 13, 1995
    Date of Patent: September 17, 1996
    Assignee: Konica Corporation
    Inventors: Yasuhiko Takamuki, Ken Nagami