Masayoshi Hayashi

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Ibaraki-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing a purified naphthalene dicarboxylic acid
- Patent number 8,993,799
- Issue date Mar 31, 2015
- Mitsubishi Gas Chemical Company, Inc.
- Hideharu Kurashima
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing a high purity aromatic polycarboxylic acid
- Patent number 6,642,412
- Issue date Nov 4, 2003
- Mitsubishi Gas Chemical Company, Inc.
- Ryusuke Shigematsu
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing a high purity aromatic polycarboxylic acid
- Patent number 6,455,731
- Issue date Sep 24, 2002
- Mitsubishi Gas Chemical Company, Inc.
- Ryusuke Shigematsu
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing highly pure aromatic polycarboxylic acid
- Patent number 6,452,047
- Issue date Sep 17, 2002
- Mitsubishi Gas Chemical Company, Inc.
- Ryusuke Shigematsu
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PRODUCING A PURIFIED NAPHTHALENE DICARBOXYLIC ACID
- Publication number 20140200364
- Publication date Jul 17, 2014
- Hideharu Kurashima
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for producing a high purity aromatic polycarboxylic acid
- Publication number 20030055284
- Publication date Mar 20, 2003
- Ryusuke Shigematsu
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for producing a high purity aromatic polycarboxylic acid
- Publication number 20020002305
- Publication date Jan 3, 2002
- Ryusuke Shigematsu
- C07 - ORGANIC CHEMISTRY