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Masumi Sotoyama
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Yachiyo, JP
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last 30 patents
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Patent Grant
Data communication system and communication terminal equipment
Patent number
6,031,839
Issue date
Feb 29, 2000
NTT Mobile Communications Network
Shoichi Hirata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Packet transfer scheme and mobile communication system
Patent number
5,963,550
Issue date
Oct 5, 1999
NTT Mobile Communications Network, Inc.
Shoichi Hirata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Mobile communication systems sharing a control channel
Patent number
5,884,165
Issue date
Mar 16, 1999
NTT Mobile Communications Network, Inc.
Noriko Uchida
H04 - ELECTRIC COMMUNICATION TECHNIQUE