Inventor · disambiguated record
Toru Tsuboi
Also filed as: TSUBOI TORU
3 granted patents·2 pending applications·22 citations·filing 1999–2006
68Inventor score
Top patents by PatentIndex Score
5 records- 0175US6660056B2Valve seat for internal combustion enginesHITACHI POWDERED METALS·Filed 2001·Granted Dec 9, 2003·10 cites·14 claims
- 0272US7892481B2Manufacturing method for wear resistant sintered member, sintered valve seat, and manufacturing method thereforHITACHI POWDERED METALS·Filed 2006·Granted Feb 22, 2011·4 cites·15 claims
- 0351US2002002481A1Information processing apparatus for management of documents relevant to patent applicationFiled 2001·Application pending·0 cites
- 0443US6251157B1Sintered alloy having superb wear resistance and process for producing the sameHITACHI POWDERED METALS·Filed 1999·Granted Jun 26, 2001·8 cites·3 claims
- 0542US2006032328A1Sintered valve guide and manufacturing method thereofCHIKAHATA KATSUNAO·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →