Shigeru Ohki

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Mihama-ku, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic dynamic bearing and spindle motor
- Patent number 6,354,742
- Issue date Mar 12, 2002
- Seiko Instruments Inc.
- Tadao Iwaki
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Hydraulic dynamic bearing and spindle motor utilizing hydraulic dyn...
- Patent number 6,247,848
- Issue date Jun 19, 2001
- Seiko Instruments Inc.
- Tadao Iwaki
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Oscillating motor, measurement device for measuring distance, speed...
- Patent number 6,181,410
- Issue date Jan 30, 2001
- Seiko Instruments Inc.
- Takashi Ishida
- G02 - OPTICS