Tetsuhiko Hirata

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Packet switching apparatus
- Patent number 8,077,719
- Issue date Dec 13, 2011
- Hitachi, Ltd.
- Kazuho Miki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Address translator and method for management of address translation...
- Patent number 7,404,008
- Issue date Jul 22, 2008
- Hitachi, Ltd.
- Keisuke Takeuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Packet switching apparatus
- Patent number 7,173,932
- Issue date Feb 6, 2007
- Hitachi, Ltd.
- Kazuho Miki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile communication system
- Patent number 7,123,599
- Issue date Oct 17, 2006
- Hitachi, Ltd.
- Masashi Yano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile communication systems, mobile stations, base station control...
- Patent number 7,085,579
- Issue date Aug 1, 2006
- Hitachi, Ltd.
- Mika Mizutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile IP network system and connection switching method
- Patent number 7,009,950
- Issue date Mar 7, 2006
- Hitachi, Ltd.
- Tetsuhiko Hirata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile communication system, mobile station, and base station that...
- Patent number 6,701,132
- Issue date Mar 2, 2004
- Hitachi, Ltd.
- Shoji Fukuzawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network interface apparatus
- Patent number 5,748,893
- Issue date May 5, 1998
- Hitachi, Ltd.
- Tetsuhiko Hirata
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Network interface apparatus and data transmission control method th...
- Patent number 5,727,149
- Issue date Mar 10, 1998
- Hitachi, Ltd.
- Tetsuhiko Hirata
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and system for sequentially broadcasting data according to p...
- Patent number 5,706,430
- Issue date Jan 6, 1998
- Hitachi, Ltd.
- Emiko Yanagisawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System for executing high speed communication protocol processing b...
- Patent number 5,678,060
- Issue date Oct 14, 1997
- Hitachi, Ltd.
- Tatsuya Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication control method and apparatus for performing high spee...
- Patent number 5,623,606
- Issue date Apr 22, 1997
- Hitachi, Ltd.
- Tatsuya Yokoyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Arithmetic-logic unit with modulo addition/substraction function an...
- Patent number 5,345,410
- Issue date Sep 6, 1994
- Hitachi, Ltd.
- Tatsuya Yokoyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Protocol processing apparatus for use in interfacing network connec...
- Patent number 5,303,344
- Issue date Apr 12, 1994
- Hitachi, Ltd.
- Tatsuya Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system for coexistent base band and broad band signals
- Patent number 5,150,365
- Issue date Sep 22, 1992
- Hitachi, Ltd.
- Tetsuhiko Hirata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication protocol for predicting communication frame type in h...
- Patent number 5,056,058
- Issue date Oct 8, 1991
- Hitachi, Ltd.
- Tetsuhiko Hirata
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Packet switching apparatus
- Publication number 20070110060
- Publication date May 17, 2007
- Hitachi, Ltd.
- Kazuho Miki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Mobile IP network system and connection switching method
- Publication number 20060114856
- Publication date Jun 1, 2006
- Tetsuhiko Hirata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Address translator and method for management of address translation...
- Publication number 20040103212
- Publication date May 27, 2004
- Keisuke Takeuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Mobile communication system
- Publication number 20030012179
- Publication date Jan 16, 2003
- Masashi Yano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Packet switching apparatus
- Publication number 20020176414
- Publication date Nov 28, 2002
- Hitachi, Ltd.
- Kazuho Miki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Mobile communication systems, mobile stations, base station control...
- Publication number 20010031634
- Publication date Oct 18, 2001
- Mika Mizutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Tetsuhiko Hirata

Person

Patents Grantslast 30 patents

Packet switching apparatus

Address translator and method for management of address translation...

Packet switching apparatus

Mobile communication system

Mobile communication systems, mobile stations, base station control...

Mobile IP network system and connection switching method

Mobile communication system, mobile station, and base station that...

Network interface apparatus

Network interface apparatus and data transmission control method th...

Method and system for sequentially broadcasting data according to p...

System for executing high speed communication protocol processing b...

Communication control method and apparatus for performing high spee...

Arithmetic-logic unit with modulo addition/substraction function an...

Protocol processing apparatus for use in interfacing network connec...

Communication system for coexistent base band and broad band signals

Communication protocol for predicting communication frame type in h...

Patents Applicationslast 30 patents

Packet switching apparatus

Mobile IP network system and connection switching method

Address translator and method for management of address translation...

Mobile communication system

Packet switching apparatus

Mobile communication systems, mobile stations, base station control...