Inventor · disambiguated record
Hirotaka Masuda
Also filed as: MASUDA HIROTAKA
4 granted patents·1 pending application·42 citations·filing 1989–2022
71Inventor score
Files withKK PILOT CORPORATION ALSO TRADING AS PILOT CORPORATION1NIPPON CHEMIPHAR CO1OKAMOTO KEISHI1PILOT CORP1PILOT CORPORATION KK1
Top patents by PatentIndex Score
5 records- 0188US8430591B1Ballpoint pen tip and ballpoint penOKAMOTO KEISHI·Filed 2012·Granted Apr 30, 2013·15 cites·12 claims
- 0278US5294439AStabilized benzimidazole derivative and compositionNIPPON CHEMIPHAR CO·Filed 1989·Granted Mar 15, 1994·27 cites·5 claims
- 0358US2024182730A1Oil-based ballpoint penKK PILOT CORPORATION ALSO TRADING AS PILOT CORPORATION·Filed 2022·Application pending·0 cites
- 0448US10087337B2Oil-based ball-point pen refill, oil-based ball-point pen, and oil-based ball-point pen ink compositionPILOT CORPORATION KK·Filed 2014·Granted Oct 2, 2018·0 cites·8 claims
- 0548US9375972B2Writing instrumentPILOT CORP·Filed 2013·Granted Jun 28, 2016·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →