Inventor · disambiguated record
Koki Otsuka
Also filed as: OTSUKA KOKI
10 granted patents·240 citations·filing 1992–2008
91Inventor score
Top patents by PatentIndex Score
10 records- 0188US6383310B1Exhaust equipment member, internal combustion engine system using same, and method for producing such exhaust equipment memberHITACHI METALS LTD·Filed 2000·Granted May 7, 2002·22 cites·26 claims
- 0282USD376602SExhaust manifold for an internal combustion engineHITACHI METALS LTD·Filed 1995·Granted Dec 17, 1996·27 cites·1 claims
- 0380USD372250SExhaust manifold for an internal combustion engineHITACHI METALS LTD·Filed 1995·Granted Jul 30, 1996·25 cites·1 claims
- 0478US8241558B2High-Cr, high-Ni, heat-resistant, austenitic cast steel and exhaust equipment members formed therebyHAYASHI KEIJIRO·Filed 2005·Granted Aug 14, 2012·6 cites·7 claims
- 0574US7503304B2Internal engine piston and its production methodHITACHI METALS LTD·Filed 2004·Granted Mar 17, 2009·14 cites·22 claims
- 0667US5400399ASpeech communication apparatus equipped with echo cancellerTOSHIBA KK·Filed 1992·Granted Mar 21, 1995·45 cites·19 claims
- 0765US5784881AMulti-part exhaust manifold assembly with welded connectionsHITACHI METALS LTD·Filed 1997·Granted Jul 28, 1998·30 cites·9 claims
- 0864US5636323ASpeech communication apparatus having an echo cancelerTOSHIBA KK·Filed 1994·Granted Jun 3, 1997·38 cites·14 claims
- 0961US5379338ARadiotelephone with handset talking function and hand-free talking functionTOSHIBA KK·Filed 1992·Granted Jan 3, 1995·33 cites·29 claims
- 1053US9169543B2Precipitation-hardened, martensitic, cast stainless steel having excellent machinability and its production methodKAWABATA MASAHIDE·Filed 2008·Granted Oct 27, 2015·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →