Tomohiro Esaki

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Fujisawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Mobile terminal
- Patent number 7,177,960
- Issue date Feb 13, 2007
- Hitachi, Ltd.
- Kazuyuki Takizawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Portable mobile unit
- Patent number 6,928,306
- Issue date Aug 9, 2005
- Hitachi, Ltd.
- Masayuki Matsuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Sound decompressing apparatus providing improved sound quality duri...
- Patent number 6,285,982
- Issue date Sep 4, 2001
- Hitachi, Ltd.
- Tutomu Imai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Information processing system which can handle voice or image data
- Patent number 5,754,629
- Issue date May 19, 1998
- Hitachi, Ltd.
- Yoshihiko Kunimori
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Information delivery system and portable information terminal
- Patent number 5,740,369
- Issue date Apr 14, 1998
- Hitachi, Ltd.
- Tooru Yokozawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
PI/4 shift QPSK modulator and communication apparatus used therewith
- Patent number 5,361,047
- Issue date Nov 1, 1994
- Hitachi, Ltd.
- Yasuaki Takahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Echo canceller and communication apparatus employing the same
- Patent number 5,131,032
- Issue date Jul 14, 1992
- Hitachi, Ltd.
- Tomohiro Esaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Mobile terminal
- Publication number 20060268016
- Publication date Nov 30, 2006
- Hitachi, Ltd
- Kazuyuki Takizawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Portable mobile unit
- Publication number 20050181838
- Publication date Aug 18, 2005
- Hitachi, Ltd
- Masayuki Matsuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Mobile terminal
- Publication number 20040252139
- Publication date Dec 16, 2004
- Hitachi, Ltd
- Kazuyuki Takizawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Portable mobile unit
- Publication number 20010014616
- Publication date Aug 16, 2001
- Masayuki Matsuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE