Membership
Tour
Register
Log in
Yasuo Ohtsuka
Follow
Person
Kanagawa, JP
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Display device and display optical system unit
Patent number
7,341,354
Issue date
Mar 11, 2008
Hitachi, Ltd.
Mikio Shiraishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Display device and display optical system unit
Patent number
7,128,422
Issue date
Oct 31, 2006
Hitachi, Ltd.
Mikio Shiraishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Display device and display optical system unit
Patent number
6,935,750
Issue date
Aug 30, 2005
Hitachi, Ltd.
Mikio Shiraishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Display device and display optical system unit
Patent number
6,779,894
Issue date
Aug 24, 2004
Hitachi, Ltd.
Mikio Shiraishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Display device and display optical system unit
Patent number
6,582,083
Issue date
Jun 24, 2003
Hitachi, Ltd.
Mikio Shiraishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Display device and display optical system unit
Patent number
6,394,608
Issue date
May 28, 2002
Hitachi, Ltd.
Mikio Shiraishi
G02 - OPTICS
Information
Patent Grant
Disk cartridge and disk device using the same
Patent number
6,181,664
Issue date
Jan 30, 2001
Hitachi, Ltd.
Kiyoshi Kano
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk cartridge and disk device using the same
Patent number
6,108,299
Issue date
Aug 22, 2000
Hitachi, Ltd.
Kiyoshi Kano
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk cartridge and disk device using the same
Patent number
6,075,763
Issue date
Jun 13, 2000
Hitachi, Ltd.
Kiyoshi Kano
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk cartridge and disk device using the same
Patent number
5,991,260
Issue date
Nov 23, 1999
Hitachi, Ltd.
Kiyoshi Kano
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
Display device and display optical system unit
Publication number
20070040994
Publication date
Feb 22, 2007
Mikio Shiraishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Display device and display optical system unit
Publication number
20050248728
Publication date
Nov 10, 2005
Mikio Shiraishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Display device and display optical system unit
Publication number
20050018143
Publication date
Jan 27, 2005
Mikio Shiraishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Display device and display optical system unit
Publication number
20030214636
Publication date
Nov 20, 2003
Mikio Shiraishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Display device and display optical system unit
Publication number
20020131023
Publication date
Sep 19, 2002
Mikio Shiraishi
G02 - OPTICS