Inventor · disambiguated record
Masamichi Hayakawa
Also filed as: HAYAKAWA MASAMICHI
19 granted patents·1 pending application·473 citations·filing 1994–2017
95Inventor score
Files withSANKYO SEIKI SEISAKUSHO KK13TOYO GOSEI CO LTD2HAYAKAWA MASAMICHI1HYOGO PREFECTURE1SANKYO SEIKI SESAKUSHO KK1
Top patents by PatentIndex Score
20 records- 0197US6296391B1Hydrodynamic bearing apparatusSANKYO SEIKI SEISAKUSHO KK·Filed 1998·Granted Oct 2, 2001·97 cites·11 claims
- 0296US5806987AHydrodynamic bearing apparatusSANKYO SEIKI SEISAKUSHO KK·Filed 1997·Granted Sep 15, 1998·86 cites·26 claims
- 0392US6402385B1Dynamic pressure bearing apparatusSANKYO SEIKI SEISAKUSHO KK·Filed 2000·Granted Jun 11, 2002·38 cites·14 claims
- 0487US5791785AHydrodynamic bearing apparatusSANKYO SEIKI SEISAKUSHO KK·Filed 1997·Granted Aug 11, 1998·45 cites·13 claims
- 0586US6244749B1Dynamic pressure bearing device and method for manufacturing sameSANKYO SEIKI SESAKUSHO KK·Filed 1999·Granted Jun 12, 2001·47 cites·7 claims
- 0670US11347147B2Metal-containing onium salt compound, photodegradable base, resist composition, and method for manufacturing device using said resist compositionTOYO GOSEI CO LTD·Filed 2017·Granted May 31, 2022·1 cites·10 claims
- 0766US5628569AFluid bearing unit and manufactured method thereofSANKYO SEIKI SEISAKUSHO KK·Filed 1994·Granted May 13, 1997·24 cites·13 claims
- 0861US6448383B2Method for producing 1,2-naphthoquinonediazide photosensitive agentTOYO GOSEI KOGYO KK·Filed 2001·Granted Sep 10, 2002·3 cites·12 claims
- 0961US5627147ALubricating fluid composition for dynamic pressure bearingSANKYO SEIKI SEISAKUSHO KK·Filed 1996·Granted May 6, 1997·18 cites·13 claims
- 1059US5599864APolyarylene sulfide resin composition and optical pick-up parts formed from the sameSANKYO SEIKI SEISAKUSHO KK·Filed 1994·Granted Feb 4, 1997·11 cites·14 claims
- 1158US6147424AGas dynamic pressure bearing apparatusSANKYO SEIKI SEISAKUSHO KK·Filed 1998·Granted Nov 14, 2000·17 cites·15 claims
- 1258US5743656AHydrodynamic bearing apparatus and method for manufacturing sameSANKYO SEIKI SEISAKUSHO KK·Filed 1996·Granted Apr 28, 1998·16 cites·8 claims
- 1356US6155721ADynamic-pressure fluid bearingSANKYO SEIKI SEISAKUSHO KK·Filed 1998·Granted Dec 5, 2000·20 cites·6 claims
- 1454US7858287B2Photosensitive resin, and photosensitive compositionHYOGO PREFECTURE·Filed 2007·Granted Dec 28, 2010·7 cites·7 claims
- 1554US5789836AMotor having dynamic pressure bearing deviceSANKYO SEIKO MFG CO LTD·Filed 1996·Granted Aug 4, 1998·20 cites·3 claims
- 1650US5629274ALubricating fluid composition for dynamic pressure bearingSANKYO SEIKI SEISAKUSHO KK·Filed 1996·Granted May 13, 1997·12 cites·17 claims
- 1743US11048166B2Photosensitive compound, photoacid generator and resist composition containing the photosensitive compound, and method for manufacturing device using the resist compositionTOYO GOSEI CO LTD·Filed 2017·Granted Jun 29, 2021·0 cites·5 claims
- 1843US2007085431A1Motor, recording disk driving device using the same, and method of manufacturing thereofHAYAKAWA MASAMICHI·Filed 2006·Application pending·0 cites
- 1942US5828795ASealing device for use in a motorSANKYO SEIKI SEISAKUSHO KK·Filed 1997·Granted Oct 27, 1998·9 cites·20 claims
- 2031US6302586B1Fluid sealing device for use with a motor for rotating a disc driveSANKYO SEIKI SEISAKUSHO KK·Filed 1999·Granted Oct 16, 2001·2 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →