Masaaki Kawabata

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Emergency notification system and emergency notification device
- Patent number 8,103,239
- Issue date Jan 24, 2012
- NEC Corporation
- Junichi Yamazaki
- G08 - SIGNALLING
Information Patent Grant
Emergency notification system and emergency notification device
- Patent number 7,308,246
- Issue date Dec 11, 2007
- NEC Corporation
- Junichi Yamazaki
- G08 - SIGNALLING

Patents Applicationslast 30 patents

Information Patent Application
Emergency notification system and emergency notification
- Publication number 20060128356
- Publication date Jun 15, 2006
- NEC Corporation
- Junichi Yamazaki
- G08 - SIGNALLING
Information Patent Application
Emergency notification system and emergency notification device
- Publication number 20030050040
- Publication date Mar 13, 2003
- NEC Corporation
- Junichi Yamazaki
- G08 - SIGNALLING