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Katsumi Kobayashi
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Kawaguchi-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Portable information terminal
Patent number
6,876,871
Issue date
Apr 5, 2005
Pioneer Corporation
Naofumi Hirayama
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Portable telephone
Patent number
6,807,276
Issue date
Oct 19, 2004
Pioneer Corporation
Naofumi Hirayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Portable telephone, remote monitoring system, portable information...
Publication number
20020028696
Publication date
Mar 7, 2002
Naofumi Hirayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Interior image information providing system using portable informat...
Publication number
20020025825
Publication date
Feb 28, 2002
Naofumi Hirayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Portable telephone
Publication number
20020018558
Publication date
Feb 14, 2002
PIONEER CORPORATION
Naofumi Hirayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Portable information terminal
Publication number
20020016187
Publication date
Feb 7, 2002
Naofumi Hirayama
G06 - COMPUTING CALCULATING COUNTING