Inventor · disambiguated record
Atsushi Iwasa
Also filed as: IWASA ATSUSHI
6 granted patents·2 pending applications·107 citations·filing 1997–2016
82Inventor score
Top patents by PatentIndex Score
8 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
- 0370US6517273B2Free-ink type writing instrumentMITSUBISHI PENCIL CO·Filed 2001·Granted Feb 11, 2003·12 cites·1 claims
- 0453US7837404B2ApplicatorMITSUBISHI PENCIL CO·Filed 2004·Granted Nov 23, 2010·1 cites·19 claims
- 0542US2012316276A1Aqueous marking ink compositionIWASA ATSUSHI·Filed 2010·Application pending·0 cites
- 0639US2018079920A1Dispersion of colored resin fine particles for aqueous ink, and aqueous ink composition for writing instruments prepared by using the sameMITSUBISHI PENCIL CO·Filed 2016·Application pending·0 cites
- 0738US6443649B1Free-ink type writing instrumentMITSUBISHI PENCIL CO·Filed 2001·Granted Sep 3, 2002·0 cites·1 claims
- 0831US5959000AErasable inkMITSUBISHI PENCIL CO·Filed 1997·Granted Sep 28, 1999·3 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →