Inventor · disambiguated record
Hiroyuki Idogawa
Also filed as: IDOGAWA HIROYUKI
5 granted patents·103 citations·filing 1993–1997
81Inventor score
Files withMITSUBISHI PENCIL CO5
Top patents by PatentIndex Score
5 records- 0184US5965634AWater base ink compositionMITSUBISHI PENCIL CO·Filed 1997·Granted Oct 12, 1999·51 cites·12 claims
- 0278US5942560AColored resin fine particle water base dispersion liquid for water base inkMITSUBISHI PENCIL CO·Filed 1997·Granted Aug 24, 1999·40 cites·28 claims
- 0342US5437715ARecording material containing carbonaceous powder whose surface is modified with fluorine gasMITSUBISHI PENCIL CO·Filed 1993·Granted Aug 1, 1995·4 cites·2 claims
- 0436US5498281ARecording material containing carbonaceous powder whose surface is modified with fluorine gasMITSUBISHI PENCIL CO·Filed 1995·Granted Mar 12, 1996·4 cites·5 claims
- 0531US6160035AOil-base pigment ink composition for writing toolsMITSUBISHI PENCIL CO·Filed 1997·Granted Dec 12, 2000·4 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →