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Seiji Shimizu
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Tokyo, JP
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last 30 patents
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Patent Grant
Wireless communication terminal and method of controlling operation...
Patent number
6,894,982
Issue date
May 17, 2005
NEC Corporation
Seiji Shimizu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System for establishing multimedia communication interconnection be...
Patent number
6,148,341
Issue date
Nov 14, 2000
Oki Electric Industry Co., Ltd.
Seiji Shimizu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and device employing location confirmation by a server or a...
Patent number
5,968,123
Issue date
Oct 19, 1999
NEC Corporation
Ryuhei Fujiwara
H04 - ELECTRIC COMMUNICATION TECHNIQUE