Ryuji Oki

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Antenna duplexer and transmitting/receiving apparatus using the same
- Patent number 5,634,200
- Issue date May 27, 1997
- Sony Corporation
- Kazuto Kitakubo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Radio communication apparatus
- Patent number 5,524,287
- Issue date Jun 4, 1996
- Sony Corporation
- Satoshi Yokoya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Antenna circuit
- Patent number 4,686,708
- Issue date Aug 11, 1987
- Sony Corporation
- Ryuji Oki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Double superheterodyne receiver
- Patent number 4,395,777
- Issue date Jul 26, 1983
- Sony Corporation
- Ryuji Oki
- H03 - BASIC ELECTRONIC CIRCUITRY