Tokuhisa Tsutsui

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Nagano, JP

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Patents Grantslast 30 patents

Information Patent Grant
Dynamic-pressure fluid bearing
- Patent number 6,155,721
- Issue date Dec 5, 2000
- Sankyo Seiki Mfg. Co., Ltd.
- Hironori Kurosawa
- G02 - OPTICS
Information Patent Grant
Dynamic-pressure fluid bearing
- Patent number 5,763,967
- Issue date Jun 9, 1998
- Sankyo Seiki Mfg. Co., Ltd.
- Hironori Kurosawa
- G02 - OPTICS
Information Patent Grant
Electrochromic display device with the counter electrode being prel...
- Patent number 5,122,896
- Issue date Jun 16, 1992
- K.K. Sankyo Seiki Seisakusho
- Yasushi Mizusaki
- G02 - OPTICS