Membership
Tour
Register
Log in
Koki Otsuka
Follow
Person
Tokyo, JP
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Speech communication apparatus having an echo canceler
Patent number
5,636,323
Issue date
Jun 3, 1997
Kabushiki Kaisha Toshiba
Yuji Umemoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Speech communication apparatus equipped with echo canceller
Patent number
5,400,399
Issue date
Mar 21, 1995
Kabushiki Kaisha Toshiba
Yuji Umemoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Radiotelephone with handset talking function and hand-free talking...
Patent number
5,379,338
Issue date
Jan 3, 1995
Kabushiki Kaisha Toshiba
Yuji Umemoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE