Hirofumi Yazaki

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Purification method for producing high purity niobium compound and/...
- Patent number 7,214,362
- Issue date May 8, 2007
- Stella Chemifa Kabushiki Kaisha
- Hirohisa Kikuyama
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Purification method for producing high purity niobium compound and/...
- Patent number 7,175,823
- Issue date Feb 13, 2007
- Stella Chemifa Kabushiki Kaisha
- Hirohisa Kikuyama
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for reducing oxygen component and carbon component in fluoride
- Patent number 7,033,563
- Issue date Apr 25, 2006
- Stella Chemifa Kabushiki Kaisha
- Hirohisa Kikuyama
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of purifying lithium hexafluorophosphate
- Patent number 6,884,403
- Issue date Apr 26, 2005
- Stella Chemifa Kabushiki Kaisha
- Hirohisa Kikuyama
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of purifying lithium hexafluorosphate
- Patent number 6,514,474
- Issue date Feb 4, 2003
- Stella Chemifa Kabushiki Kaisha
- Hirohisa Kikuyama
- C01 - INORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Purification method for producing high purity niobium compound and/...
- Publication number 20050255035
- Publication date Nov 17, 2005
- Hirohisa Kikuyama
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Method of purifying niobium compound and/or tantalum compound
- Publication number 20050123459
- Publication date Jun 9, 2005
- Hirohisa Kikuyama
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Purification method for producing high purity niobium compound and/...
- Publication number 20050115364
- Publication date Jun 2, 2005
- Hirohisa Kikuyama
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Method for reducing oxygen component and carbon component in fluoride
- Publication number 20040062696
- Publication date Apr 1, 2004
- Hirohisa Kikuyama
- C30 - CRYSTAL GROWTH
Information Patent Application
Method of purifying lithium hexafluorosphate
- Publication number 20030143145
- Publication date Jul 31, 2003
- Hirohisa Kikuyama
- C01 - INORGANIC CHEMISTRY