Toshihiko Kotaka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Telemetering apparatus
- Patent number 6,411,148
- Issue date Jun 25, 2002
- Oki Electric Industry Co., Ltd.
- Tokio Miyashita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telemetering apparatus
- Patent number 6,049,234
- Issue date Apr 11, 2000
- Oki Electric Industry Co., Ltd.
- Tokio Miyashita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Off-hook signal and dial pulse generating circuit and a method for...
- Patent number 5,937,030
- Issue date Aug 10, 1999
- Oki Electric Industry Co., Ltd.
- Tokio Miyashita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
High voltage detection circuit, bell signal detection circuit and n...
- Patent number 5,875,245
- Issue date Feb 23, 1999
- Oki Electric Industry Co., Ltd.
- Tokio Miyasita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE