Takuji HAMADA

Person

Hitachiohta, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Radio network system
- Patent number 6,934,516
- Issue date Aug 23, 2005
- Hitachi, Ltd.
- Tomoyuki Harada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio relay system
- Patent number 6,728,541
- Issue date Apr 27, 2004
- Hitachi, Ltd.
- Yoshinori Ohkura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio network system
- Patent number 6,625,421
- Issue date Sep 23, 2003
- Hitachi, Ltd.
- Tomoyuki Harada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data transmission method and system for hub-based network
- Patent number 5,724,350
- Issue date Mar 3, 1998
- Hitachi, Ltd.
- Takuji Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data transmission method and system for hub-based network
- Patent number 5,657,327
- Issue date Aug 12, 1997
- Hitachi, Ltd.
- Takuji Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cyclic data communication system
- Patent number 5,517,669
- Issue date May 14, 1996
- Hitachi, Ltd.
- Yoshinori Ohkura
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Network system
- Patent number 5,497,370
- Issue date Mar 5, 1996
- Hitachi, Ltd.
- Takuji Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multi-slot access system
- Patent number 4,949,336
- Issue date Aug 14, 1990
- Hitachi, Ltd.
- Takuji Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for detecting a fault in a ring network data t...
- Patent number 4,855,993
- Issue date Aug 8, 1989
- 501 Hitachi, Ltd.
- Takuji Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loop transmission system having plural stations connected in a vari...
- Patent number 4,766,590
- Issue date Aug 23, 1988
- Hitachi, Ltd.
- Takuji Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of detecting recovery from fault in a data transmission syst...
- Patent number 4,704,714
- Issue date Nov 3, 1987
- Hitachi, Ltd.
- Hiroshi Tomizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loop type data transmission system
- Patent number 4,604,742
- Issue date Aug 5, 1986
- Hitachi, Ltd.
- Takuji Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reconfiguration control method for a loop-type data network
- Patent number 4,530,085
- Issue date Jul 16, 1985
- Hitachi, Ltd.
- Takuji Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loop type data highway system
- Patent number 4,510,494
- Issue date Apr 9, 1985
- Hitachi, Ltd.
- Sadao Mizokawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loop data transmission control method and system
- Patent number 4,432,054
- Issue date Feb 14, 1984
- Hitachi, Ltd.
- Masakazu Okada
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Dual loop type data highway system
- Patent number 4,416,008
- Issue date Nov 15, 1983
- Hitachi, Ltd.
- Masahiro Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Content Matching Information Presentation Device and Presentation M...
- Publication number 20090228921
- Publication date Sep 10, 2009
- Kazuho Miki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ELECTRONIC ADVERTISEMENT SYSTEM
- Publication number 20090132367
- Publication date May 21, 2009
- Takuji HAMADA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Radio network system
- Publication number 20030194972
- Publication date Oct 16, 2003
- Hitachi, Ltd
- Tomoyuki Harada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Radio relay system
- Publication number 20010018328
- Publication date Aug 30, 2001
- Yoshinori Ohkura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Takuji HAMADA

Person

Patents Grantslast 30 patents

Radio network system

Radio relay system

Radio network system

Data transmission method and system for hub-based network

Data transmission method and system for hub-based network

Cyclic data communication system

Network system

Multi-slot access system

Method and apparatus for detecting a fault in a ring network data t...

Loop transmission system having plural stations connected in a vari...

Method of detecting recovery from fault in a data transmission syst...

Loop type data transmission system

Reconfiguration control method for a loop-type data network

Loop type data highway system

Loop data transmission control method and system

Dual loop type data highway system

Patents Applicationslast 30 patents

Content Matching Information Presentation Device and Presentation M...

ELECTRONIC ADVERTISEMENT SYSTEM

Radio network system

Radio relay system