Inventor · disambiguated record
Heiichi Hasegawa
Also filed as: HASAGAWA KEIICHI · HASEGAWA HEIICHI
3 granted patents·55 citations·filing 1993–2001
73Inventor score
Top patents by PatentIndex Score
3 records- 0171US6351886B1Method of manufacturing a speed gearMETALART CORP·Filed 1999·Granted Mar 5, 2002·24 cites·3 claims
- 0259US6343497B2Method of manufacturing a speed gear and an apparatus for manufacturing a speed gearMETALART CORP·Filed 2001·Granted Feb 5, 2002·9 cites·6 claims
- 0354USRE34752EAlkaline battery with a nickel electrodeYUASA BATTERY CO LTD·Filed 1993·Granted Oct 4, 1994·22 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →