Masahiro Takahashi

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

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
Television telephone
- Patent number 5,966,164
- Issue date Oct 12, 1999
- Hitachi, Ltd.
- Hiroshi Gotoh
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Television telephone
- Patent number 5,677,727
- Issue date Oct 14, 1997
- Hitachi, Ltd.
- Hiroshi Gotoh
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multimedia telemeeting terminal device, terminal device system and...
- Patent number 5,432,525
- Issue date Jul 11, 1995
- Hitachi, Ltd.
- Seizi Maruo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Television telephone
- Patent number 5,396,269
- Issue date Mar 7, 1995
- Hitachi, Ltd.
- Hiroshi Gotoh
- 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
Dual loop type data highway system
- Patent number 4,416,008
- Issue date Nov 15, 1983
- Hitachi, Ltd.
- Masahiro Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loop type data highway system for data transmission
- Patent number 4,398,288
- Issue date Aug 9, 1983
- Hitachi, Ltd.
- Sadao Mizokawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Indication input signal processing system for use in remote supervi...
- Patent number 4,135,149
- Issue date Jan 16, 1979
- Hitachi, Ltd.
- Masahiro Takahashi
- G08 - SIGNALLING

Patents Applicationslast 30 patents

Information Patent Application
Radio relay system
- Publication number 20010018328
- Publication date Aug 30, 2001
- Yoshinori Ohkura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Masahiro Takahashi

Person

Patents Grantslast 30 patents

Radio relay system

Television telephone

Television telephone

Multimedia telemeeting terminal device, terminal device system and...

Television telephone

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

Dual loop type data highway system

Loop type data highway system for data transmission

Indication input signal processing system for use in remote supervi...

Patents Applicationslast 30 patents

Radio relay system