Akihiro Ohyama

Follow

Person

Funabaski, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Spindle motor structure using ceramic ball bearing for hard disk drive
- Patent number 6,342,743
- Issue date Jan 29, 2002
- International Business Machines Corporation
- Shinichi Matsuzaki
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Spindle motor startup method and apparatus
- Patent number 6,218,794
- Issue date Apr 17, 2001
- International Business Machines Corporation
- Yasuhito Shimizu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER