Tetsuro Okamura

Follow

Person

Chino-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Zone phase correcting lens and optical head device
- Patent number 7,471,611
- Issue date Dec 30, 2008
- Nidec Nissin Corporation
- Tetsuro Okamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Lens, optical head apparatus, and objective lens for the optical he...
- Patent number 7,304,934
- Issue date Dec 4, 2007
- NIDEC SANKYO CORPORATION
- Kenichi Hayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Ring zonal phase correction lens and optical system and optical hea...
- Patent number 7,236,313
- Issue date Jun 26, 2007
- Nidec Nissin Corporation
- Tetsuro Okamura
- G02 - OPTICS
Information Patent Grant
Optical element, lens and optical head device
- Patent number 7,139,126
- Issue date Nov 21, 2006
- Nidec Nissin Corporation
- Tetsuro Okamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Scanning optics
- Patent number 5,768,028
- Issue date Jun 16, 1998
- Kabushiki Kaisha Sankyo Seiki Seisakusho
- Tetsuro Okamura
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Ring zonal phase correction lens and optical system and optical hea...
- Publication number 20060077568
- Publication date Apr 13, 2006
- Tetsuro Okamura
- G02 - OPTICS
Information Patent Application
Objective lens and optical head device provided with the same
- Publication number 20060007840
- Publication date Jan 12, 2006
- Kenichi Hayashi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical element, lens and optical head device
- Publication number 20050036204
- Publication date Feb 17, 2005
- Nissin Kohki Co., LTD.
- Tetsuro Okamura
- G02 - OPTICS
Information Patent Application
Lens, optical head apparatus, and objective lens for the optical he...
- Publication number 20050002315
- Publication date Jan 6, 2005
- Kenichi Hayashi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical head device and objective lens for optical head device
- Publication number 20040131000
- Publication date Jul 8, 2004
- Sankyo Seiki Mfg. Co., Ltd.
- Kenichi Hayashi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical head device and objective lens
- Publication number 20030123369
- Publication date Jul 3, 2003
- Yuji Fujita
- G11 - INFORMATION STORAGE