Patents by Inventor Jisaburo Ueyanagi

Jisaburo Ueyanagi 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).

  • Silver halide photographic light-sensitive elements
    Patent number: 4334014
    Abstract: A silver halide photographic light-sensitive element is described containing a cephalosporin compound in its silver halide emulsion layer of substantially the surface latent image type, or in its hydrophilic colloid layer. This light-sensitive element is prevented in the latent image fading.
    Type: Grant
    Filed: March 18, 1981
    Date of Patent: June 8, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroyuki Mifune, Tadao Shishido, Shoji Ishiguro, Jisaburo Ueyanagi