Inventor · disambiguated record
Tamio Shirafuji
Also filed as: SHIRAFUJI TAMIO
11 granted patents·38 citations·filing 1986–1992
87Inventor score
Files withSUMITOMO CHEMICAL CO11
Top patents by PatentIndex Score
11 records- 0155US4691064AMethod for producing cycloalkanolsSUMITOMO CHEMICAL CO·Filed 1986·Granted Sep 1, 1987·5 cites·9 claims
- 0254US5300662AProcess for producing coumarin and derivatives thereofSUMITOMO CHEMICAL CO·Filed 1992·Granted Apr 5, 1994·5 cites·14 claims
- 0350US4716253AMethod for producing cycloalkanolsSUMITOMO CHEMICAL CO·Filed 1986·Granted Dec 29, 1987·4 cites·11 claims
- 0446US5260457AProcess for producing coumarin and derivative thereofSUMITOMO CHEMICAL CO·Filed 1992·Granted Nov 9, 1993·3 cites·5 claims
- 0546US4849550AMethod for producing cycloalkanolsSUMITOMO CHEMICAL CO·Filed 1988·Granted Jul 18, 1989·3 cites·3 claims
- 0644US4879422AMethod for producing cycloalkanolSUMITOMO CHEMICAL CO·Filed 1988·Granted Nov 7, 1989·3 cites·11 claims
- 0740US5237075AProcess for producing 3,4-dihydrocoumarin derivativesSUMITOMO CHEMICAL CO·Filed 1992·Granted Aug 17, 1993·3 cites·10 claims
- 0840US4849551AMethod for separating cyclohexanolSUMITOMO CHEMICAL CO·Filed 1988·Granted Jul 18, 1989·2 cites·5 claims
- 0940US4670612AMethod for producing alicyclic alcoholsSUMITOMO CHEMICAL CO·Filed 1986·Granted Jun 2, 1987·2 cites·7 claims
- 1039US5231194AProcess for producing coumarin derivativesSUMITOMO CHEMICAL CO·Filed 1990·Granted Jul 27, 1993·7 cites·13 claims
- 1136US5218129AProcess for producing 3,4-dihydrocoumarinSUMITOMO CHEMICAL CO·Filed 1991·Granted Jun 8, 1993·1 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →