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Kenichi Kitazawa
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Hino-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Communication system and server apparatus and terminal apparatus
Patent number
7,778,623
Issue date
Aug 17, 2010
Kabushiki Kaisha Toshiba
Motohisa Araki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Monitoring connection state between main equipment and terminal in...
Patent number
7,463,624
Issue date
Dec 9, 2008
Kabushiki Kaisha Toshiba
Kenichi Kitazawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Telephone System, Call Control Apparatus and Communication Connecti...
Publication number
20120163371
Publication date
Jun 28, 2012
Kenichi Kitazawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Telephone system, telephone exchange apparatus, and route switching...
Publication number
20070280221
Publication date
Dec 6, 2007
Kabushiki Kaisha Toshiba
Kenichi Kitazawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication system and server apparatus and terminal apparatus
Publication number
20070202837
Publication date
Aug 30, 2007
Motohisa Araki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Telephone system and hunting method of channel in the same
Publication number
20070121609
Publication date
May 31, 2007
Kabushiki Kaisha Toshiba
Kenichi Kitazawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Network telephone system and main apparatus and telephone terminals...
Publication number
20060165067
Publication date
Jul 27, 2006
Kabushiki Kaisha Toshiba
Kenichi Kitazawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Speech communication system and communication apparatus for speech...
Publication number
20050117568
Publication date
Jun 2, 2005
Kabushiki Kaisha Toshiba
Kenichi Kitazawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Exchange system, telephone exchange apparatus, and computer apparatus
Publication number
20010028710
Publication date
Oct 11, 2001
Kabushiki Kaisha Toshiba
Yasumasa Sasaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE