Keiji USUBA

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Radio communication apparatus
- Patent number 8,116,263
- Issue date Feb 14, 2012
- Hitachi, Ltd.
- Akihiko Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio communication apparatus
- Patent number 8,094,600
- Issue date Jan 10, 2012
- Hitachi, Ltd.
- Akihiko Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio communication system and base station
- Patent number 8,073,381
- Issue date Dec 6, 2011
- Hitachi, Ltd.
- Akihiko Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio communication system and base station
- Patent number 7,996,033
- Issue date Aug 9, 2011
- Hitachi Communication Technologies, Ltd.
- Akihiko Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio communication apparatus
- Patent number 7,724,724
- Issue date May 25, 2010
- Hitachi, Ltd.
- Akihiko Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmission equipment for network and network transmission system
- Patent number 7,184,661
- Issue date Feb 27, 2007
- Hitachi, Ltd.
- Keiji Usuba
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Pathsize control method and operation of transmission apparatus
- Patent number 7,054,334
- Issue date May 30, 2006
- Hitachi, Ltd.
- Yoshimi Nakagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Bi-directional line switched ring network system
- Patent number 6,614,754
- Issue date Sep 2, 2003
- Hitachi, Ltd.
- Keiji Usuba
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
TRAFFIC CONTROL METHOD AND TRAFFIC CONTROL APPARATUS
- Publication number 20150063113
- Publication date Mar 5, 2015
- Hitachi, Ltd
- Akihiko YOSHIDA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM FOR SPECIFYING CAUSE OF MICROBURST OCCURRENCE AND METHOD FOR...
- Publication number 20150029841
- Publication date Jan 29, 2015
- Hitachi, Ltd
- Daigo TAKAYANAGI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CELLULAR SYSTEM AND HAND-OFF QUALITY IMPROVEMENT METHOD
- Publication number 20120142351
- Publication date Jun 7, 2012
- Hitachi, Ltd.
- Daigo TAKAYANAGI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ADJOINING BASE STATION DETERMINING METHOD AND MANAGEMENT DEVICE
- Publication number 20100227634
- Publication date Sep 9, 2010
- Daigo TAKAYANAGI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Radio Communication System and Base Station
- Publication number 20090023382
- Publication date Jan 22, 2009
- Hitachi Communication Technologies, Ltd.
- Akihiko Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RADIO COMMUNICATION APPARATUS
- Publication number 20080181164
- Publication date Jul 31, 2008
- Akihiko Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RADIO COMMUNCATION APPARATUS
- Publication number 20080181193
- Publication date Jul 31, 2008
- Akihiko Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Radio Communication System and Base Station
- Publication number 20080182612
- Publication date Jul 31, 2008
- Hitachi Communication Technologies, Ltd.
- Akihiko Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RADIO COMMUNICATION APPARATUS
- Publication number 20080175218
- Publication date Jul 24, 2008
- Akihiko Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Radio communication system and base station
- Publication number 20050288025
- Publication date Dec 29, 2005
- Hitachi Communication Technologies, Ltd.
- Akihiko Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Radio communication apparatus
- Publication number 20050128996
- Publication date Jun 16, 2005
- Akihiko Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Pathsize control method and operation of transmission apparatus
- Publication number 20020075863
- Publication date Jun 20, 2002
- Yoshimi Nakagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Keiji USUBA

Person

Patents Grantslast 30 patents

Radio communication apparatus

Radio communication apparatus

Radio communication system and base station

Radio communication system and base station

Radio communication apparatus

Transmission equipment for network and network transmission system

Pathsize control method and operation of transmission apparatus

Bi-directional line switched ring network system

Patents Applicationslast 30 patents

TRAFFIC CONTROL METHOD AND TRAFFIC CONTROL APPARATUS

SYSTEM FOR SPECIFYING CAUSE OF MICROBURST OCCURRENCE AND METHOD FOR...

CELLULAR SYSTEM AND HAND-OFF QUALITY IMPROVEMENT METHOD

ADJOINING BASE STATION DETERMINING METHOD AND MANAGEMENT DEVICE

Radio Communication System and Base Station

RADIO COMMUNICATION APPARATUS

RADIO COMMUNCATION APPARATUS

Radio Communication System and Base Station

RADIO COMMUNICATION APPARATUS

Radio communication system and base station

Radio communication apparatus

Pathsize control method and operation of transmission apparatus