Katsuhiko Hirao

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Nara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Combustible gas processing system and combustible gas processing me...
- Patent number 8,899,968
- Issue date Dec 2, 2014
- Osaka Gas Co., Ltd.
- Kenji Seki
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Flammable gas concentration system
- Patent number 8,328,913
- Issue date Dec 11, 2012
- Osaka Gas Co., Ltd.
- Etsuo Shito
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Flammable gas concentration device and flammable gas concentration...
- Patent number 8,262,771
- Issue date Sep 11, 2012
- Osaka Gas Co., Ltd.
- Kenji Seki
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Patents Applicationslast 30 patents

Information Patent Application
Combustible Gas Processing System and Combustible Gas Processing Me...
- Publication number 20100196833
- Publication date Aug 5, 2010
- OSAKA GAS CO., LTD.
- Kenji Seki
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Flammable Gas Concentration System
- Publication number 20100115840
- Publication date May 13, 2010
- GAS AND POWER INVESTMENT CO., LTD.
- Etsuo Shito
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Flammable Gas Concentration Device and Flammable Gas Concentration...
- Publication number 20100005958
- Publication date Jan 14, 2010
- OSAKA GAS CO., LTD.
- Kenji Seki
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL