Patents by Inventor Soichiro Irie

Soichiro Irie 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).

  • Light-sensitive silver halide photographic material
    Patent number: 4490462
    Abstract: There is disclosed a light-sensitive silver halide photographic material comprising at least one hydrophilic colloid layer containing at least one compound represented by the following general formula [I]: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 have the same meanings as defined in the specification.The light-sensitive silver halide photographic material according to this invention has excellent bacteriocidal properties and does not adversely affect photographic performance.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: December 25, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yasushi Kawaguchi, Kiyomitsu Mine, Keiko Ide, Yukie Yamashita, Soichiro Irie, Yotaro Hirao