Kazuhiko Kajihara

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Yokohama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of forming an electret condenser microphone
- Patent number 7,233,675
- Issue date Jun 19, 2007
- Matsushita Electric Industrial Co., Ltd.
- Kazuhiko Kajihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electret condenser microphone and method of producing same
- Patent number 7,062,052
- Issue date Jun 13, 2006
- Matsushita Electric Industrial Co., Ltd.
- Kazuhiko Kajihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Ear-hang type headset
- Patent number 5,210,792
- Issue date May 11, 1993
- Matsushita Electric Industrial Co., Ltd.
- Kazuhiko Kajihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Electret condenser microphone and method of producing same
- Publication number 20060143911
- Publication date Jul 6, 2006
- Matsushita Electric Industrial Co., Ltd.
- Kazuhiko Kajihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Electret condenser microphone and method of producing same
- Publication number 20020168073
- Publication date Nov 14, 2002
- Kazuhiko Kajihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE