Patents by Inventor Katsuhide Mitsui

Katsuhide Mitsui 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).

  • Lithographic development of a lith-type silver halide emulsions containing a benzimidazole
    Patent number: 4001021
    Abstract: An improved lith-type silver halide photosensitive material of a wide latitude for infectious developing is disclosed which comprises, in an amount of 5 mg to 5 g per mole of silver halide, a compound represented by the following general formula: ##STR1## wherein R.sub.1 is a substituted or unsubstituted alkyl, aryl, aralkyl, arythio or aryloxy group, and R.sub.2 is hydrogen, halogen, alkyl, alkoxy or nitro.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: January 4, 1977
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Tomio Nakajima, Teiji Habu, Elichi Sakamoto, Hiroshi Yamada, Katsuhide Mitsui, Eisaku Hayashi