Inventor · disambiguated record
Masakichi Yahagi
Also filed as: YAHAGI MASAKICHI
13 granted patents·121 citations·filing 1974–1986
91Inventor score
Files withSHIN NISSO KAKO CO LTD13
Top patents by PatentIndex Score
13 records- 0191US3959571AChromogenic fluoran derivatives and the preparation and use thereofSHIN NISSO KAKO CO LTD·Filed 1974·Granted May 25, 1976·59 cites·2 claims
- 0288US4410708AChromogenic fluoran derivatives and the preparation and use thereofSHIN NISSO KAKO CO LTD·Filed 1976·Granted Oct 18, 1983·16 cites·19 claims
- 0380US4568766A4-Hydroxy-4'-isopropoxydiphenylsulfone and its use for color-developable recording materialSHIN NISSO KAKO CO LTD·Filed 1984·Granted Feb 4, 1986·18 cites·2 claims
- 0469US4616239A4-hydroxy-4'-isopropoxydiphenylsulfone and its use for color-developable recording materialSHIN NISSO KAKO CO LTD·Filed 1985·Granted Oct 7, 1986·8 cites·13 claims
- 0549US4668967AFluoran compound and color forming record materials using the sameSHIN NISSO KAKO CO LTD·Filed 1986·Granted May 26, 1987·3 cites·5 claims
- 0649US4613879AChromogenic recording materialsSHIN NISSO KAKO CO LTD·Filed 1984·Granted Sep 23, 1986·2 cites·9 claims
- 0746US4642357AChromogenic recording materialsSHIN NISSO KAKO CO LTD·Filed 1986·Granted Feb 10, 1987·5 cites·1 claims
- 0842US4503446AHeat-sensitive color-developing compositionSHIN NISSO KAKO CO LTD·Filed 1982·Granted Mar 5, 1985·4 cites·16 claims
- 0941US4727162AMolecular compound of fluoran compound and ketoneSHIN NISSO KAKO CO LTD·Filed 1986·Granted Feb 23, 1988·1 cites·3 claims
- 1039US4695640AAddition compound of fluoran compounds and ketoneSHIN NISSO KAKO CO LTD·Filed 1985·Granted Sep 22, 1987·1 cites·1 claims
- 1138US4590498AChromogenic recording materialsSHIN NISSO KAKO CO LTD·Filed 1984·Granted May 20, 1986·3 cites·13 claims
- 1231US4677203AChromogenic fluoran derivativesSHIN NISSO KAKO CO LTD·Filed 1983·Granted Jun 30, 1987·1 cites·15 claims
- 1327US4665199A3-N-isobutylethylamino-6-methyl-7-phenylaminofluoranSHIN NISSO KAKO CO LTD·Filed 1985·Granted May 12, 1987·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →