Atsumi Fujiwara

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Medium-frequency radio transmission system
- Patent number 5,689,804
- Issue date Nov 18, 1997
- NHK Integrated Technology Inc.
- Tadao Sugita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Medium-frequency radio broadcasting retransmission system for confi...
- Patent number 5,537,637
- Issue date Jul 16, 1996
- NHK Integrated Technology, Inc.
- Tadao Sugita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Matching circuit
- Patent number 4,945,317
- Issue date Jul 31, 1990
- Nippon Hoso Kyokai
- Tutomu Sato
- H03 - BASIC ELECTRONIC CIRCUITRY