Ryoichi Nakayama

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Niihama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Anti-oxidation method for sulfide minerals in sulfide ore
- Patent number 7,435,405
- Issue date Oct 14, 2008
- Sumitomo Metal Mining Co., Ltd.
- Yoshiyuki Tanaka
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of processing cyanide ions by ozone
- Patent number 6,264,847
- Issue date Jul 24, 2001
- Sumitomo Metal Mining, Co., Ltd.
- Ryozo Ushio
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Flotation method for non-ferrous metal variable ores
- Patent number 5,702,591
- Issue date Dec 30, 1997
- Sumitomo Metal Mining Co., Ltd.
- Hideyuki Okamoto
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...

Patents Applicationslast 30 patents

Information Patent Application
Anti-oxidation method for sulfide minerals in sulfide ore
- Publication number 20050232835
- Publication date Oct 20, 2005
- Yoshiyuki Tanaka
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...