Inventor · disambiguated record

Hideto Umekawa

Also filed as: UMEKAWA HIDETO

3 granted patents·36 citations·filing 1991–1993

70Inventor score

Technology areasD21H

Files withMITSUBISHI OIL CO3

Top patents by PatentIndex Score

3 records

0154US5219912AEmulsified alkenylsuccinic acid sizing agentMITSUBISHI OIL CO·Filed 1991·Granted Jun 15, 1993·20 cites·13 claims
0244US5306757AEmulsified alkenylsuccinic acid sizing agentMITSUBISHI OIL CO·Filed 1992·Granted Apr 26, 1994·10 cites·4 claims
0327US5391225AAlkenylsuccini acid emulsion sizing agentMITSUBISHI OIL CO·Filed 1993·Granted Feb 21, 1995·6 cites·19 claims

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