Inventor
YAHAGI MASAKICHI
JP13 patents
Patents
13 patentsUS3959571AMay 25, 1976
Chromogenic fluoran derivatives and the preparation and use thereof
SHIN NISSO KAKO CO LTD59 citations93
US4568766AFeb 4, 1986
4-Hydroxy-4'-isopropoxydiphenylsulfone and its use for color-developable recording material
SHIN NISSO KAKO CO LTD18 citations79
US4410708AOct 18, 1983
Chromogenic fluoran derivatives and the preparation and use thereof
SHIN NISSO KAKO CO LTD16 citations79
US4616239AOct 7, 1986
4-hydroxy-4'-isopropoxydiphenylsulfone and its use for color-developable recording material
SHIN NISSO KAKO CO LTD8 citations71
US4727162AFeb 23, 1988
Molecular compound of fluoran compound and ketone
SHIN NISSO KAKO CO LTD1 citations61
US4677203AJun 30, 1987
Chromogenic fluoran derivatives
SHIN NISSO KAKO CO LTD1 citations60
US4503446AMar 5, 1985
Heat-sensitive color-developing composition
SHIN NISSO KAKO CO LTD4 citations60
US4668967AMay 26, 1987
Fluoran compound and color forming record materials using the same
SHIN NISSO KAKO CO LTD3 citations59
US4642357AFeb 10, 1987
Chromogenic recording materials
SHIN NISSO KAKO CO LTD5 citations59
US4613879ASep 23, 1986
Chromogenic recording materials
SHIN NISSO KAKO CO LTD2 citations59
US4590498AMay 20, 1986
Chromogenic recording materials
SHIN NISSO KAKO CO LTD3 citations59
US4695640ASep 22, 1987
Addition compound of fluoran compounds and ketone
SHIN NISSO KAKO CO LTD1 citations49
US4665199AMay 12, 1987
3-N-isobutylethylamino-6-methyl-7-phenylaminofluoran
SHIN NISSO KAKO CO LTD0 citations48