Inventor
HAYAKAWA MASAMICHI
JP19 patents
⚠️ This page may combine multiple inventors who share the name “HAYAKAWA MASAMICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SANKYO SEIKI SEISAKUSHO KK
13 patentsUS6296391B1Oct 2, 2001
Hydrodynamic bearing apparatus
SANKYO SEIKI SEISAKUSHO KK97 citations97
US5806987ASep 15, 1998
Hydrodynamic bearing apparatus
SANKYO SEIKI SEISAKUSHO KK86 citations96
US6402385B1Jun 11, 2002
Dynamic pressure bearing apparatus
SANKYO SEIKI SEISAKUSHO KK38 citations92
US5791785AAug 11, 1998
Hydrodynamic bearing apparatus
SANKYO SEIKI SEISAKUSHO KK45 citations92
US5627147AMay 6, 1997
Lubricating fluid composition for dynamic pressure bearing
SANKYO SEIKI SEISAKUSHO KK18 citations91
US6155721ADec 5, 2000
Dynamic-pressure fluid bearing
SANKYO SEIKI SEISAKUSHO KK20 citations90
US5628569AMay 13, 1997
Fluid bearing unit and manufactured method thereof
SANKYO SEIKI SEISAKUSHO KK24 citations89
US6147424ANov 14, 2000
Gas dynamic pressure bearing apparatus
SANKYO SEIKI SEISAKUSHO KK17 citations84
US5743656AApr 28, 1998
Hydrodynamic bearing apparatus and method for manufacturing same
SANKYO SEIKI SEISAKUSHO KK16 citations73
US5828795AOct 27, 1998
Sealing device for use in a motor
SANKYO SEIKI SEISAKUSHO KK9 citations72
US5629274AMay 13, 1997
Lubricating fluid composition for dynamic pressure bearing
SANKYO SEIKI SEISAKUSHO KK12 citations72
US5599864AFeb 4, 1997
Polyarylene sulfide resin composition and optical pick-up parts formed from the same
SANKYO SEIKI SEISAKUSHO KK11 citations72
US6302586B1Oct 16, 2001
Fluid sealing device for use with a motor for rotating a disc drive
SANKYO SEIKI SEISAKUSHO KK2 citations62
TOYO GOSEI CO LTD
2 patentsUS11347147B2May 31, 2022
Metal-containing onium salt compound, photodegradable base, resist composition, and method for manufacturing device using said resist composition
TOYO GOSEI CO LTD1 citations59
US11048166B2Jun 29, 2021
Photosensitive compound, photoacid generator and resist composition containing the photosensitive compound, and method for manufacturing device using the resist composition
TOYO GOSEI CO LTD0 citations48