Yoshiharu Wakao

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Patents Grantslast 30 patents

Information Patent Grant
Method for treating ship ballast water
- Patent number 8,123,958
- Issue date Feb 28, 2012
- Katayama Chemical, Inc.
- Yasuo Fukuyo
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for treating ship ballast water
- Patent number 7,618,545
- Issue date Nov 17, 2009
- Katayama Chemical, Inc.
- Yoshiharu Wakao
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for preventing obstruction in aluminum brass pipes in a wate...
- Patent number 6,106,770
- Issue date Aug 22, 2000
- Mitsubishi Gas Chemical Company Inc.
- Keiji Ohki
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Preventive agents against adhesion of marine organisms and methods...
- Patent number 5,760,091
- Issue date Jun 2, 1998
- Katayama Chemical, Inc.
- Yoshiharu Wakao
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
Method for Treating Ship Ballast Water
- Publication number 20090294382
- Publication date Dec 3, 2009
- KATAYAMA CHEMICAL, INC.
- Yasuo Fukuyo
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Method for treating ship ballast water
- Publication number 20060289364
- Publication date Dec 28, 2006
- Yoshiharu Wakao
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE