Inventor · disambiguated record
Hiroki Fujitsuka
Also filed as: FUJITSUKA HIROKI
7 granted patents·2 pending applications·43 citations·filing 2002–2011
82Inventor score
Top patents by PatentIndex Score
9 records- 0187US7575619B2Wear resistant sintered memberHITACHI POWDERED METALS·Filed 2006·Granted Aug 18, 2009·13 cites·19 claims
- 0280US7572312B2Sintered valve seat and production method thereforHITACHI POWDERED METALS·Filed 2006·Granted Aug 11, 2009·7 cites·13 claims
- 0376US9212572B2Sintered valve guide and production method thereforFUJITSUKA HIROKI·Filed 2010·Granted Dec 15, 2015·3 cites·13 claims
- 0474US8617288B2Sintered material for valve guides and production method thereforFUJITSUKA HIROKI·Filed 2011·Granted Dec 31, 2013·2 cites·11 claims
- 0572US7892481B2Manufacturing 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
- 0672US6562098B1Wear resistant sintered memberHITACHI POWDERED METALS·Filed 2002·Granted May 13, 2003·14 cites·19 claims
- 0751US2010080725A1Production method for sintered valve guideHITACHI POWDERED METALS·Filed 2009·Application pending·0 cites
- 0845US8876935B2Sintered material for valve guides and production method thereforFUJITSUKA HIROKI·Filed 2011·Granted Nov 4, 2014·0 cites·8 claims
- 0942US2006032328A1Sintered valve guide and manufacturing method thereofCHIKAHATA KATSUNAO·Filed 2005·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Hiroki Fujitsuka files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →