Yoshio Hayashi

Person

Nagano, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical head device having an objective lens holder supported by co...
- Patent number 7,336,567
- Issue date Feb 26, 2008
- NIDEC SANKYO CORPORATION
- Yoshio Hayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device
- Patent number 6,577,564
- Issue date Jun 10, 2003
- Kabushiki Kaisha Sankyo Seiki Seisakusho
- Tadashi Takeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device
- Patent number 6,552,317
- Issue date Apr 22, 2003
- Kabushiki Kaisha Sankyo Seiki Seisakusho
- Tadashi Takeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device having a shielding protection
- Patent number 6,445,671
- Issue date Sep 3, 2002
- Kabushiki Kaisha Sankyo Seiki Seisakusho
- Tadashi Takeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Light-pick-up device and light source unit incorporated in the same
- Patent number 6,438,075
- Issue date Aug 20, 2002
- Kabushiki Kaisha Sankyo Seiki Seisakusho
- Tadashi Takeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor laser apparatus and optical pickup apparatus
- Patent number 6,184,512
- Issue date Feb 6, 2001
- Sankyo Seiki Mfg. Co., Ltd.
- Kazuo Higashiura
- G01 - MEASURING TESTING
Information Patent Grant
Optical head assembly
- Patent number 6,151,288
- Issue date Nov 21, 2000
- Sankyo Seiki Mfg. Co., Ltd.
- Yuichi Takei
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup head apparatus
- Patent number 6,016,300
- Issue date Jan 18, 2000
- Sankyo Seiki Mfg. Co., Ltd.
- Tadashi Takeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup head apparatus
- Patent number 5,828,643
- Issue date Oct 27, 1998
- Sankyo Seiki Mfg. Co., Ltd.
- Tadashi Takeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Polarizing beam splitter and method for manufacturing same
- Patent number 5,793,733
- Issue date Aug 11, 1998
- Sankyo Seiki Mfg. Co., Ltd.
- Tadashi Takeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device with split hologram element that diffracts li...
- Patent number 5,761,174
- Issue date Jun 2, 1998
- Kabushiki Kaisha Sankyo Seiki Seisakusho
- Tadashi Takeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Polarizing beam splitter and optical head assembly
- Patent number 5,739,952
- Issue date Apr 14, 1998
- Kabushiki Kaisha Sankyo Seiki Seisakusho
- Tadashi Takeda
- G02 - OPTICS
Information Patent Grant
Optical pickup system
- Patent number 5,687,152
- Issue date Nov 11, 1997
- Kabushiki Kaisha Sankyo Seiki Seisakusho
- Tadashi Takeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Hologram integrated with a beam splitter to separate a plurality of...
- Patent number 5,648,950
- Issue date Jul 15, 1997
- Kabushiki Kaisha Sankyo Seiki Seisakusho
- Tadashi Takeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Point measuring process for preset robot
- Patent number 4,595,989
- Issue date Jun 17, 1986
- Kabushiki Kaisha Sankyo Seiki Seisakusho
- Kazuyoshi Yasukawa
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

Information Patent Application
Optical head device
- Publication number 20050007899
- Publication date Jan 13, 2005
- Yoshio Hayashi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup device
- Publication number 20020181373
- Publication date Dec 5, 2002
- KABUSHIKI KAISHA SANKYO SEIKI SEISAKUSHO
- Tadashi Takeda
- G11 - INFORMATION STORAGE

Yoshio Hayashi

Person

Patents Grantslast 30 patents

Optical head device having an objective lens holder supported by co...

Optical pickup device

Optical pickup device

Optical pickup device having a shielding protection

Light-pick-up device and light source unit incorporated in the same

Semiconductor laser apparatus and optical pickup apparatus

Optical head assembly

Optical pickup head apparatus

Optical pickup head apparatus

Polarizing beam splitter and method for manufacturing same

Optical pickup device with split hologram element that diffracts li...

Polarizing beam splitter and optical head assembly

Optical pickup system

Hologram integrated with a beam splitter to separate a plurality of...

Point measuring process for preset robot

Patents Applicationslast 30 patents

Optical head device

Optical pickup device