Inventor · disambiguated record
Hisaya Nakagawa
Also filed as: NAKAGAWA HISAYA
12 granted patents·6 pending applications·273 citations·filing 1990–2008
92Inventor score
Files withSANKYO SEIKI SEISAKUSHO KK9GOMYO MASATO1NIDEC CORP1NIDEC SANKYO CORP1SANKYO SEIKI SESAKUSHO KK1
Top patents by PatentIndex Score
18 records- 0192US6402385B1Dynamic pressure bearing apparatusSANKYO SEIKI SEISAKUSHO KK·Filed 2000·Granted Jun 11, 2002·38 cites·14 claims
- 0288US8164850B2Fluid dynamic bearing device, spindle motor, and disk drive apparatus including nickel coated bearing housingGOMYO MASATO·Filed 2008·Granted Apr 24, 2012·11 cites·10 claims
- 0388US7435002B2Bearing unitNIDEC SANKYO CORP·Filed 2005·Granted Oct 14, 2008·11 cites·6 claims
- 0486US6244749B1Dynamic pressure bearing device and method for manufacturing sameSANKYO SEIKI SESAKUSHO KK·Filed 1999·Granted Jun 12, 2001·47 cites·7 claims
- 0585US5631211ALubricating oil composition for use with sintered porous bearingsSANKYO SEIKI SEISAKUSHO KK·Filed 1994·Granted May 20, 1997·41 cites·18 claims
- 0675US5980819ASintered oil-impregnated bearing, manufacturing method thereof, and motor comprising sameSANKYO SEIKI SEISAKUSHO KK·Filed 1998·Granted Nov 9, 1999·26 cites·4 claims
- 0772US5120091AOil impregnated sintered bearingSANKYO SEIKI SEISAKUSHO KK·Filed 1990·Granted Jun 9, 1992·29 cites·3 claims
- 0868US5120140ASintered oil-impregnated bearingSANKYO SEIKI SEISAKUSHO KK·Filed 1990·Granted Jun 9, 1992·28 cites·18 claims
- 0965US5129738ABearing deviceSANKYO SEIKI SEISAKUSHO KK·Filed 1991·Granted Jul 14, 1992·26 cites·5 claims
- 1059US6805489B2Dynamic pressure bearing deviceSANKYO SEIKI SEISAKUSHO KK·Filed 2002·Granted Oct 19, 2004·8 cites·20 claims
- 1158US8240920B2Fluid dynamic bearing, motor, and recording disk drive apparatusSEKII YOICHI·Filed 2008·Granted Aug 14, 2012·1 cites·28 claims
- 1248US2007242911A1Bearing mechanism and spindle motor having the sameNIDEC CORP·Filed 2007·Application pending·0 cites
- 1344US2006039638A1Sintered oil-impregnated bearing and manufacturing method thereofTAKIZAWA MICHIAKI·Filed 2005·Application pending·0 cites
- 1438US2004252923A1Bearing device, and manufacturing method therefor and motor provided with bearing deviceFiled 2004·Application pending·0 cites
- 1535US5372433ABearing device for an electric motorSANKYO SEIKI SEISAKUSHO KK·Filed 1994·Granted Dec 13, 1994·7 cites·3 claims
- 1635US2002060828A1Air dynamic pressure bearing and optical deflectorFiled 2001·Application pending·0 cites
- 1735US2002172438A1Bearing apparatus and method for manufacturing sameSANKYO SEIKI SEISAKUSHO KK·Filed 2002·Application pending·0 cites
- 1834US2003227226A1Rotary shaft motorFiled 2003·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Hisaya Nakagawa 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 →