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Tadayuki Shibuya
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Photoelectric smoke sensor
Patent number
10,151,693
Issue date
Dec 11, 2018
Fenwal Controls of Japan, Ltd.
Masao Iguchi
G08 - SIGNALLING
Information
Patent Grant
Photoelectric smoke detector
Patent number
10,054,542
Issue date
Aug 21, 2018
Fenwal Controls of Japan, Ltd.
Masao Iguchi
G08 - SIGNALLING
Information
Patent Grant
Photoelectric smoke sensor
Patent number
9,297,753
Issue date
Mar 29, 2016
Fenwal Controls of Japan, Ltd.
Tadayuki Shibuya
G01 - MEASURING TESTING
Information
Patent Grant
Light emission portion, photoelectric smoke sensor, and suction-typ...
Patent number
8,743,366
Issue date
Jun 3, 2014
Fenwal Controls of Japan, Ltd.
Kanji Numao
F21 - LIGHTING
Patents Applications
last 30 patents
Information
Patent Application
PHOTOELECTRIC SMOKE SENSOR
Publication number
20180180540
Publication date
Jun 28, 2018
Fenwal Controls of Japan, Ltd.
Masao Iguchi
G08 - SIGNALLING
Information
Patent Application
Photoelectric Smoke Detector
Publication number
20160305874
Publication date
Oct 20, 2016
Fenwal Controls of Japan, Ltd.
Masao Iguchi
G01 - MEASURING TESTING
Information
Patent Application
PHOTOELECTRIC SMOKE SENSOR
Publication number
20150146204
Publication date
May 28, 2015
Fenwal Controls of Japan, Ltd.
Tadayuki Shibuya
G01 - MEASURING TESTING
Information
Patent Application
LIGHT EMISSION PORTION, PHOTOELECTRIC SMOKE SENSOR, AND SUCTION-TYP...
Publication number
20140063498
Publication date
Mar 6, 2014
Fenwal Controls of Japan, Ltd.
Kanji Numao
G01 - MEASURING TESTING