Masashi Hiraiwa

Person

Yokohama-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Regulation method and apparatus for ATM cell delay variation
- Patent number 6,335,917
- Issue date Jan 1, 2002
- Hitachi, Ltd.
- Shinichi Hamamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cell/packet assembly and disassembly apparatus and network system
- Patent number 6,021,134
- Issue date Feb 1, 2000
- Hitachi, Ltd.
- Masashi Hiraiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Regulation method and apparatus for ATM cell delay variation
- Patent number 5,774,466
- Issue date Jun 30, 1998
- Hitachi, Ltd.
- Shinichi Hamamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
ATM exchange, ATM multiplexer and network trunk apparatus
- Patent number 5,737,314
- Issue date Apr 7, 1998
- Hitachi, Ltd.
- Atsuo Hatono
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cell/ packet assembly and disassembly apparatus and network system
- Patent number 5,734,653
- Issue date Mar 31, 1998
- Hitachi, Ltd.
- Masashi Hiraiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital interface system for offices connected by plural digital lines
- Patent number 5,533,022
- Issue date Jul 2, 1996
- Hitachi, Ltd.
- Masashi Hiraiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for arranging common channel signal network throu...
- Patent number 5,490,135
- Issue date Feb 6, 1996
- Hitachi, Ltd.
- Masashi Hiraiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital interface system
- Patent number 5,420,854
- Issue date May 30, 1995
- Hitachi, Ltd.
- Masashi Hiraiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Switching system for electronic switcher
- Patent number 5,333,187
- Issue date Jul 26, 1994
- Hitachi, Ltd.
- Masashi Hiraiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Exchanging system and method of establishing data call thereof
- Patent number 5,317,633
- Issue date May 31, 1994
- Hitachi, Ltd.
- Masashi Hiraiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Regulation method and apparatus for ATM cell delay variation
- Publication number 20020034163
- Publication date Mar 21, 2002
- Shinichi Hamamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Masashi Hiraiwa

Person

Patents Grantslast 30 patents

Regulation method and apparatus for ATM cell delay variation

Cell/packet assembly and disassembly apparatus and network system

Regulation method and apparatus for ATM cell delay variation

ATM exchange, ATM multiplexer and network trunk apparatus

Cell/ packet assembly and disassembly apparatus and network system

Digital interface system for offices connected by plural digital lines

Method and system for arranging common channel signal network throu...

Digital interface system

Switching system for electronic switcher

Exchanging system and method of establishing data call thereof

Patents Applicationslast 30 patents

Regulation method and apparatus for ATM cell delay variation