Kei Hamamoto

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Himeji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for production of maleic anhydride
- Patent number 6,960,670
- Issue date Nov 1, 2005
- Nippon Shokubai Co., Ltd.
- Tadayoshi Kawashima
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Apparatus and method for preparation and supply of polymerization i...
- Patent number 6,899,452
- Issue date May 31, 2005
- Nippon Shokubai Co., Inc.
- Kei Hamamoto
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for starting up distilling column
- Patent number 6,676,808
- Issue date Jan 13, 2004
- Nippon Shokubai Co., Ltd.
- Kei Hamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for stopping purifying column
- Patent number 6,613,196
- Issue date Sep 2, 2003
- Nippon Shokubai Co., Ltd.
- Kei Hamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Tank and a method for storing an easily polymerizable compound
- Patent number 6,581,637
- Issue date Jun 24, 2003
- Nippon Shokubai Co., Ltd.
- Kei Hamamoto
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Solid substance removing device
- Patent number 6,495,045
- Issue date Dec 17, 2002
- Nippon Shokubai Co., Ltd.
- Kei Hamamoto
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Apparatus and method for preparation and supply of polymerization i...
- Publication number 20030095471
- Publication date May 22, 2003
- Kei Hamamoto
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Method for production of maleic anhydride
- Publication number 20030023101
- Publication date Jan 30, 2003
- Tadayoshi Kawashima
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Method for stopping purifying column
- Publication number 20020027067
- Publication date Mar 7, 2002
- Kei Hamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Solid substance removing device
- Publication number 20020008064
- Publication date Jan 24, 2002
- Kei Hamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Method for starting up distilling column
- Publication number 20020008010
- Publication date Jan 24, 2002
- Kei Hamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Tank and a method for storing an easily polymerizable compound
- Publication number 20010015226
- Publication date Aug 23, 2001
- Kei Hamamoto
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC