Inventor
OYAMA AKIMASA
JP5 patents
Patents
5 patentsUS5991291ANov 23, 1999
Server of a computer network telephone system
SONY CORP126 citations97
US6188677B1Feb 13, 2001
Telephone apparatus used for computer network telephone system
SONY CORP62 citations95
US6108329AAug 22, 2000
Telephone apparatus used for computer network telephone system
SONY CORP42 citations92
US6014687AJan 11, 2000
System for audio communication between two terminals connected to the internet network
SONY CORP55 citations92
US7420959B1Sep 2, 2008
Telephone apparatus used for computer network telephone system
SONY CORP1 citations51