Hiroshi Akiyama

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Ichikawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacture of ion exchange resins
- Patent number 4,342,839
- Issue date Aug 3, 1982
- Rohm & Haas Company
- Hiroshi Akiyama
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Fiber-supported ion exchanger
- Patent number 4,331,541
- Issue date May 25, 1982
- Rohm & Haas Company
- Hiroshi Akiyama
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Grant
Sulphonation method for manufacture of a cation exchange resin
- Patent number 4,209,592
- Issue date Jun 24, 1980
- Rohm & Haas Company
- Hiroshi Akiyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...