Hideki Arai

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
IP communications system for notifying a gateway controller of an I...
- Patent number 7,672,320
- Issue date Mar 2, 2010
- Oki Electric Industry Co., Ltd.
- Hideki Arai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
IP telephone system having a hold function and a callback function
- Patent number 7,471,673
- Issue date Dec 30, 2008
- Oki Electric Industry Co., Ltd.
- Hideki Arai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
IP telephone system having a hold function and a callback function
- Publication number 20060251231
- Publication date Nov 9, 2006
- Oki Electric Industry Co., Ltd.
- Hideki Arai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IP communications system for notifying a gateway controller of an I...
- Publication number 20050276272
- Publication date Dec 15, 2005
- Oki Electric Industry Co., Ltd.
- Hideki Arai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE