Koichi Hirama

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Quasi-resonant composite resonance circuit
- Patent number 8,264,263
- Issue date Sep 11, 2012
- Koichi Hirama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Complex resonance circuit
- Patent number 8,179,209
- Issue date May 15, 2012
- Koichi Hirama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Composite resonance circuit and oscillation circuit using the circuit
- Patent number 7,893,784
- Issue date Feb 22, 2011
- Koichi Hirama
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
Complex resonance circuit and oscillation circuit using the same
- Publication number 20110043080
- Publication date Feb 24, 2011
- Koichi Hirama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
COMPLEX RESONANCE CIRCUIT
- Publication number 20090251234
- Publication date Oct 8, 2009
- Koichi Hirama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Composite Resonance Circuit and Oscillation Circuit Using the Circuit
- Publication number 20080136542
- Publication date Jun 12, 2008
- Koichi Hirama
- H03 - BASIC ELECTRONIC CIRCUITRY