Kiyoaki Koyama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Fire notification system and test method using test jig therefor
- Patent number 10,360,789
- Issue date Jul 23, 2019
- Hochiki Corporation
- David Brown
- G08 - SIGNALLING
Information Patent Grant
Detected information display system in fire detecting system
- Patent number 6,249,220
- Issue date Jun 19, 2001
- Hochiki Kabushiki Kaisha
- Yukiko Kaji
- G08 - SIGNALLING
Information Patent Grant
Line fault monitoring apparatus
- Patent number 5,631,795
- Issue date May 20, 1997
- Hochiki Corporation
- Kiyoaki Koyama
- G08 - SIGNALLING
Information Patent Grant
Disaster prevention monitoring apparatus
- Patent number 5,475,363
- Issue date Dec 12, 1995
- Hochiki Corporation
- Munemasa Suzuki
- G08 - SIGNALLING

Patents Applicationslast 30 patents

Information Patent Application
FIRE NOTIFICATION SYSTEM AND TESTING METHOD THEREFOR
- Publication number 20180075733
- Publication date Mar 15, 2018
- Hochiki Corporation
- David BROWN
- G08 - SIGNALLING