Inventor
KOGUCHI MINORU
JP3 patents
Patents
3 patentsUS4954631ASep 4, 1990
Fluoran compounds and color forming recording materials using same
SHIN NISSO KAKO CO LTD4 citations59
US4826806AMay 2, 1989
Fluoran compounds and color forming recording materials using same
SHIN NISSO KAKO CO LTD3 citations59
US4794069ADec 27, 1988
Spirobenzanthracene phthalide compounds, processes for preparing same and color forming recording materials containing said compounds
SHIN NISSO KAKO CO LTD0 citations49