Inventor · disambiguated record
Isao Sumiyoshi
Also filed as: SUMIYOSHI ISAO
4 granted patents·22 citations·filing 2008–2013
69Inventor score
Top patents by PatentIndex Score
4 records- 0189US8308150B2Coil spring for vehicle suspension and method for manufacturing the sameTANGE AKIRA·Filed 2010·Granted Nov 13, 2012·11 cites·3 claims
- 0288US8533954B2Method for manufacturing a coil spring for vehicle suspensionTANGE AKIRA·Filed 2011·Granted Sep 17, 2013·11 cites·4 claims
- 0347US9404547B2Steel for high-strength spring, method for producing same, and high-strength springNHK SPRING CO LTD·Filed 2013·Granted Aug 2, 2016·0 cites·7 claims
- 0444US8297092B2Reflection member for shot peening and shot peening method having the sameTANGE AKIRA·Filed 2008·Granted Oct 30, 2012·0 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →