Asao Takahashi

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Saitama, JA

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Patents Grantslast 30 patents

Information Patent Grant
Process for purifying halogenated alkenylphenol polymers
- Patent number 4,032,598
- Issue date Jun 28, 1977
- Maruzen Oil Co. Ltd.
- Hiroshi Fujiwara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process of producing alkenylphenol polymers
- Patent number 4,032,513
- Issue date Jun 28, 1977
- Maruzen Oil Co. Ltd.
- Hiroshi Fujiwara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for diaphragm electrolysis of alkali metal halides
- Patent number 4,011,147
- Issue date Mar 8, 1977
- Maruzen Oil Co. Ltd.
- Hiroshi Fujiwara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Graft copolymer and process for preparation thereof
- Patent number 3,970,534
- Issue date Jul 20, 1976
- Maruzen Oil Co. Ltd.
- Hiroshi Fujiwara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...