Assignee
YAMAMOTO KAGAKU GOSEI KK
US·11 granted patents·118 citations·filing 1971–1992
Top patents by PatentIndex Score
11 records- 0191US4622179ANaphthalocyanine compoundsYAMAMOTO KAGAKU GOSEI KK·Filed 1984·Granted Nov 11, 1986·40 cites·18 claims
- 0288US4218432AColoring agent and a composition including the same for coloring toilet bowl flushing waterYAMAMOTO KAGAKU GOSEI KK·Filed 1978·Granted Aug 19, 1980·17 cites·19 claims
- 0386US4330473ARecording materialYAMAMOTO KAGAKU GOSEI KK·Filed 1980·Granted May 18, 1982·20 cites·1 claims
- 0468US4087458AProcess for preparation of 2-(amylbenzoyl)benzoic acidYAMAMOTO KAGAKU GOSEI KK·Filed 1977·Granted May 2, 1978·10 cites·8 claims
- 0564US4316026AProcess for the preparation of copper quinolinateYAMAMOTO KAGAKU GOSEI KK·Filed 1980·Granted Feb 16, 1982·6 cites·7 claims
- 0662US3997561APressure sensitive copying paperYAMAMOTO KAGAKU GOSEI KK·Filed 1971·Granted Dec 14, 1976·6 cites·7 claims
- 0752USRE34480ENaphthalocyanine compoundsYAMAMOTO KAGAKU GOSEI KK·Filed 1992·Granted Dec 14, 1993·5 cites·8 claims
- 0852US4420616AOxidative process for the preparation of copper quinolinateYAMAMOTO KAGAKU GOSEI KK·Filed 1981·Granted Dec 13, 1983·4 cites·3 claims
- 0942US4523018ACertain bis(benzoyl)pyridine compoundsYAMAMOTO KAGAKU GOSEI KK·Filed 1982·Granted Jun 11, 1985·4 cites·18 claims
- 1027US4200751ALactones of quinoline carboxylic acidsYAMAMOTO KAGAKU GOSEI KK·Filed 1977·Granted Apr 29, 1980·3 cites·3 claims
- 1126US3998846AProcess for preparing dibenzylamino fluoran compoundsYAMAMOTO KAGAKU GOSEI KK·Filed 1974·Granted Dec 21, 1976·3 cites·4 claims
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