Ryouji Yoneyama

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Chiba-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic dynamic bearing and spindle motor
- Patent number 7,438,476
- Issue date Oct 21, 2008
- Seiko Instruments Inc.
- Hiromitsu Gotoh
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Hydraulic dynamic bearing and spindle motor and rotary assembly pro...
- Patent number 6,371,650
- Issue date Apr 16, 2002
- Seiko Instruments Inc.
- Hiromitsu Goto
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Hydraulic dynamic bearing and spindle motor and rotary assembly pro...
- Patent number 6,307,291
- Issue date Oct 23, 2001
- Seiko Instruments Inc.
- Tadao Iwaki
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Hydraulic dynamic bearing and spindle motor
- Publication number 20070253651
- Publication date Nov 1, 2007
- Hiromitsu Gotoh
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...