Takehisa OKAMOTO

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Minato-ku, JP

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Patents Grantslast 30 patents

Information Patent Grant
Acoustic system
- Patent number 9,980,041
- Issue date May 22, 2018
- Nippon Sheet Glass Environment Amenity Co., Ltd.
- Fukushi Kawakami
- E04 - BUILDING

Patents Applicationslast 30 patents

Information Patent Application
ACOUSTIC SYSTEM
- Publication number 20150055790
- Publication date Feb 26, 2015
- Nippon Sheet Glass Environment Amenity Co., Ltd.
- Fukushi KAWAKAMI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE