Takeshi Harakawa

Person

Hadano, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Interconnection system and method for heterogeneous networks
- Patent number 5,208,811
- Issue date May 4, 1993
- Hitachi, Ltd.
- Jiro Kashio
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of controlling the operation of stations in a ring network
- Patent number 5,023,871
- Issue date Jun 11, 1991
- Hitachi, Ltd.
- Susumu Nakayashiki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Ring network system and configuration control method
- Patent number 4,899,142
- Issue date Feb 6, 1990
- Hitachi, Ltd.
- Susumu Nakayashiki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data communication network system and reconfiguration control method
- Patent number 4,887,256
- Issue date Dec 12, 1989
- Hitachi, Ltd.
- Susumu Nakayashiki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data communication network system and reconfiguration control method
- Patent number 4,815,069
- Issue date Mar 21, 1989
- Hitachi, Ltd.
- Susumu Nakayashiki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network system diagnosis system
- Patent number 4,777,330
- Issue date Oct 11, 1988
- Hitachi, Ltd.
- Susumu Nakayashiki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Ring communication network system and a method for controlling same
- Patent number 4,763,315
- Issue date Aug 9, 1988
- Hitachi, Ltd.
- Susumu Nakayashiki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Local area network communication system
- Patent number 4,672,607
- Issue date Jun 9, 1987
- Hitachi, Ltd.
- Susumu Nakayashiki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Takeshi Harakawa

Person

Patents Grantslast 30 patents

Interconnection system and method for heterogeneous networks

Method of controlling the operation of stations in a ring network

Ring network system and configuration control method

Data communication network system and reconfiguration control method

Data communication network system and reconfiguration control method

Network system diagnosis system

Ring communication network system and a method for controlling same

Local area network communication system