Patents by Inventor Masahiro Hayashi, heir

Masahiro Hayashi, heir 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).

  • Direct positive silver halide photographic materials
    Patent number: 5112732
    Abstract: A direct positive silver halide photographic material is disclosed, comprising a support having thereon at least one internal latent image silver halide emulsion layer which has not been prefogged and another hydrophilic colloid layer wherein the grains in the internal latent image silver halide emulsion is formed in the presence of an iron complex compound. The direct positive silver halide photographic material is developed and then direct positive images may be obtained with this material, which feature a high D.sub.max and a low D.sub.min. The disclosed material has a broad range of applications, including as a COM film.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: May 12, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazunori Hayashi, deceased, Masahiro Hayashi, heir, Masako Hayashi, heir