Inventor · disambiguated record
Seiki Nakagawa
Also filed as: NAKAGAWA SEIKI
3 granted patents·106 citations·filing 1986–2001
74Inventor score
Top patents by PatentIndex Score
3 records- 0190US6621198B2Spark plug having iridum alloy tip, iron-based alloy tip bonding portion and stress relieving layer therebetweenDENSO CORP·Filed 2001·Granted Sep 16, 2003·37 cites·15 claims
- 0287US4732593ASintered ceramic filter structure having body compressively stressed by sintered ceramic material having different sintering shrinkage ratioNIPPON DENSO CO·Filed 1986·Granted Mar 22, 1988·63 cites·10 claims
- 0332US5209195AIgnition distributorNIPPON DENSO CO·Filed 1992·Granted May 11, 1993·6 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →