Masayuki Koyama

Person

Saitama-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Pickup device with heat-radiating mechanism
- Patent number 7,137,130
- Issue date Nov 14, 2006
- Pioneer Corporation
- Masaya Murata
- G11 - INFORMATION STORAGE
Information Patent Grant
Pickup device having a heat-radiation path
- Patent number 7,124,420
- Issue date Oct 17, 2006
- Pioneer Corporation
- Masaya Murata
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup apparatus and laser diode chip
- Patent number 6,912,234
- Issue date Jun 28, 2005
- Pioneer Corporation
- Shinichi Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup apparatus
- Patent number 6,845,078
- Issue date Jan 18, 2005
- Pioneer Corporation
- Hitoshi Furuhata
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup apparatus for reading different types of recording m...
- Patent number 6,480,456
- Issue date Nov 12, 2002
- Pioneer Corporation
- Makoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup apparatus
- Patent number 6,452,880
- Issue date Sep 17, 2002
- Pioneer Corporation
- Makoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup apparatus
- Patent number 6,429,981
- Issue date Aug 6, 2002
- Pioneer Corporation
- Ko Ishii
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device including a hologram lens section with an ova...
- Patent number 6,172,779
- Issue date Jan 9, 2001
- Pioneer Electronic Corporation
- Shinichi Takahashi
- G02 - OPTICS
Information Patent Grant
Optical pickup device including a holographic lens section with a d...
- Patent number 6,160,646
- Issue date Dec 12, 2000
- Pioneer Electronic Corporation
- Shinichi Takahashi
- G02 - OPTICS
Information Patent Grant
Optical pickup device including a hologram lens section with an ell...
- Patent number 6,055,076
- Issue date Apr 25, 2000
- Pioneer Electronic Corporation
- Shinichi Takahashi
- G02 - OPTICS
Information Patent Grant
Optical pickup unit capable of reading signals recorded on differen...
- Patent number 5,798,988
- Issue date Aug 25, 1998
- Pioneer Electronic Corporation
- Masayuki Koyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device having a magnetic circuit whose poles are con...
- Patent number 5,663,841
- Issue date Sep 2, 1997
- Pioneer Electronic Corporation
- Taichi Akiba
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Pickup device
- Publication number 20040117809
- Publication date Jun 17, 2004
- Masaya Murata
- G11 - INFORMATION STORAGE
Information Patent Application
Pickup device
- Publication number 20040117810
- Publication date Jun 17, 2004
- Masaya Murata
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup apparatus
- Publication number 20040070848
- Publication date Apr 15, 2004
- PIONEER CORPORATION
- Hitoshi Furuhata
- G02 - OPTICS
Information Patent Application
Optical pickup apparatus and laser diode chip
- Publication number 20010050933
- Publication date Dec 13, 2001
- Shinichi Takahashi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup apparatus
- Publication number 20010021070
- Publication date Sep 13, 2001
- Ko Ishii
- G11 - INFORMATION STORAGE

Masayuki Koyama

Person

Patents Grantslast 30 patents

Pickup device with heat-radiating mechanism

Pickup device having a heat-radiation path

Optical pickup apparatus and laser diode chip

Optical pickup apparatus

Optical pickup apparatus for reading different types of recording m...

Optical pickup apparatus

Optical pickup apparatus

Optical pickup device including a hologram lens section with an ova...

Optical pickup device including a holographic lens section with a d...

Optical pickup device including a hologram lens section with an ell...

Optical pickup unit capable of reading signals recorded on differen...

Optical pickup device having a magnetic circuit whose poles are con...

Patents Applicationslast 30 patents

Pickup device

Pickup device

Optical pickup apparatus

Optical pickup apparatus and laser diode chip

Optical pickup apparatus