Akiyoshi Yokota

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Ishikawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of producing biphenyltetracarboxylic esters
- Patent number 4,338,456
- Issue date Jul 6, 1982
- Ube Industries, Ltd.
- Hiroshi Itatani
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for producing biphenyl compounds
- Patent number 4,294,976
- Issue date Oct 13, 1981
- UBE Industries, Ltd.
- Hiroshi Itatani
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of producing biphenyltetracarboxylic esters
- Patent number 4,292,435
- Issue date Sep 29, 1981
- Ube Industries, Ltd.
- Hiroshi Itatani
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL