Yoshiaki Umehara

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Hitachiota, JP

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Patents Grantslast 30 patents

Information Patent Grant
Mobile terminal and navigation system
- Patent number 6,978,209
- Issue date Dec 20, 2005
- Hitachi, Ltd.
- Fumiharu Nakahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Magnetic recording signal reproducing apparatus
- Patent number 5,241,434
- Issue date Aug 31, 1993
- Hitachi, Ltd.
- Kaneyuki Okamoto
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Position detection system and portable terminal
- Publication number 20040198387
- Publication date Oct 7, 2004
- Naoki Tsuji
- G01 - MEASURING TESTING
Information Patent Application
Mobile terminal and navigation system
- Publication number 20040048620
- Publication date Mar 11, 2004
- Hitachi, Ltd
- Fumiharu Nakahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Portable terminal device
- Publication number 20030083816
- Publication date May 1, 2003
- Yoshitaka Imakado
- G01 - MEASURING TESTING