E. C. Chemical Ind. Co., Ltd.

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Patents Grantslast 30 patents

Information Patent Grant
Polyolefin resin composition comprising a dibenzylidene sorbitol de...
- Patent number 4,483,952
- Issue date Nov 20, 1984
- E.C. Chemical Ind. Co., Ltd.
- Hiroshi Uchiyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Acrylic resin article
- Patent number 4,483,956
- Issue date Nov 20, 1984
- E.C. Chemical Ind. Co., Ltd.
- Hiroshi Uchiyama
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Dibenzylidene sorbitol composition and process for preparation thereof
- Patent number 4,388,119
- Issue date Jun 14, 1983
- E.C. Chemical Ind. Co., Ltd.
- Hiroshi Uchiyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for preparing dibenzylidenesorbitol and composition contain...
- Patent number 4,267,110
- Issue date May 12, 1981
- E.C. Chemical Ind. Co., Ltd.
- Hiroshi Uchiyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for purifying crude dibenzylidene sorbitol
- Patent number 4,131,612
- Issue date Dec 26, 1978
- E. C. Chemical Ind. Co., Ltd.
- Hiroshi Uchiyama
- C07 - ORGANIC CHEMISTRY

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