Inventor · disambiguated record

Hirotsugu Tsumura

Also filed as: TSUMURA HIROTSUGU

2 granted patents·18 citations·filing 1991–1992

59Inventor score

Technology areasC09B D06P

Files withCASSELLA FARBWERKE MAINKUR AG1 HOECHST MITSUBISHI KASEI1

Top patents by PatentIndex Score

2 records

0160US5174792AMixtures of monoazo dyes: dicyano-nitrobenzene azo compoundsCASSELLA FARBWERKE MAINKUR AG·Filed 1991·Granted Dec 29, 1992·7 cites·8 claims
0254US5332404ADisperse dye mixturesHOECHST MITSUBISHI KASEI·Filed 1992·Granted Jul 26, 1994·11 cites·13 claims

Join the waitlist — get patent alerts

Get an alert when Hirotsugu Tsumura files or is granted a new patent.

We store only your email — no account needed. See our privacy policy.

Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →