Yasushi Sawada

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical network
- Patent number 7,302,176
- Issue date Nov 27, 2007
- Hitachi, Ltd.
- Shinji Sakano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission apparatus and optical systems
- Patent number 7,194,205
- Issue date Mar 20, 2007
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission apparatus and optical systems
- Patent number 6,731,874
- Issue date May 4, 2004
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission apparatus and optical systems
- Patent number 6,424,445
- Issue date Jul 23, 2002
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Fault restoration control method and it's apparatus in a co...
- Patent number 6,304,346
- Issue date Oct 16, 2001
- Hitachi, Ltd.
- Yasushi Sawada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication network system and method of controlling a communicat...
- Patent number 5,042,027
- Issue date Aug 20, 1991
- Hitachi, Ltd.
- Akihiko Takase
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Heterojunction FET with doubly-doped channel
- Patent number 4,673,959
- Issue date Jun 16, 1987
- Hitachi, Ltd.
- Yasuhiro Shiraki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor member and semiconductor device employing the same
- Patent number 4,672,406
- Issue date Jun 9, 1987
- Hitachi, Ltd.
- Yasushi Sawada
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 4,605,945
- Issue date Aug 12, 1986
- Hitachi, Ltd.
- Yoshifumi Katayama
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Optical network
- Publication number 20040213564
- Publication date Oct 28, 2004
- Shinji Sakano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission apparatus and optical systems
- Publication number 20040179839
- Publication date Sep 16, 2004
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission apparatus and optical systems
- Publication number 20020176142
- Publication date Nov 28, 2002
- Hideaki Tsushima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical network
- Publication number 20010026384
- Publication date Oct 4, 2001
- Shinji Sakano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Yasushi Sawada

Person

Patents Grantslast 30 patents

Optical network

Optical transmission apparatus and optical systems

Optical transmission apparatus and optical systems

Optical transmission apparatus and optical systems

Fault restoration control method and it&#x00027;s apparatus in a co...

Communication network system and method of controlling a communicat...

Heterojunction FET with doubly-doped channel

Semiconductor member and semiconductor device employing the same

Semiconductor device

Patents Applicationslast 30 patents

Optical network

Optical transmission apparatus and optical systems

Optical transmission apparatus and optical systems

Optical network

Fault restoration control method and it's apparatus in a co...