Akio Kiyohara

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Yokkaichi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing a light color high softening point hydrocarbo...
- Patent number 4,870,146
- Issue date Sep 26, 1989
- Tosoh Corporation
- Yasushi Sakai
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing a hydrocarbon resin
- Patent number 4,684,711
- Issue date Aug 4, 1987
- Toyo Soda Manufacturing Co., Ltd.
- Yasushi Sakai
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method of polymerizing vinyl monomers with coated reactor
- Patent number 4,680,349
- Issue date Jul 14, 1987
- Toyo Soda Manufacturing Co., Ltd.
- Tetsuya Asahi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...