Patents by Inventor Toyoki Nishizima

Toyoki Nishizima 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).

  • Patent number: 4540656
    Abstract: A color photographic light-sensitive material comprising, on a reflective support, at least one light-sensitive silver halide emulsion layer containing a dye-forming coupler and a non-light-sensitive layer provided on the light-sensitive silver halide emulsion layer, located furthest from the reflective support, the non-light-sensitive layer containing:(a) a benzotriazole derivative represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 independently represent an alkyl, an alkoxy, an alkenyl, each alkyl, alkoxy, or alkenyl having not less than 4 carbon atoms, an aryl, or an aryloxy, said aryl and aryloxy each being substituted or unsubstituted and wherein R.sub.3 represents hydrogen, a halogen, an alkyl, an alkoxy, an alkenyl, each alkyl, alkoxy, or alkenyl having not less than 4 carbon atoms, an aryl, or an aryloxy; and(b) at least one compound having selected from the formulae (II) or (III): ##STR2## wherein R.sub.4 and R.sub.
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: September 10, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Toyoki Nishizima, Masao Sasaki, Kaoru Onodera