Kazuhiro Kumakura

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Hasaki-machi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing vinyl chloride type polymer
- Patent number 12,252,564
- Issue date Mar 18, 2025
- Shin-Etsu Chemical Co., Ltd.
- Hiroshi Fukudome
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for producing vinyl chloride type polymer
- Patent number 12,240,972
- Issue date Mar 4, 2025
- Shin-Etsu Chemical Co., Ltd.
- Hiroshi Fukudome
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Synthetic fused silica member
- Patent number 6,333,284
- Issue date Dec 25, 2001
- Shin-Etsu Chemical Co., Ltd.
- Hisatoshi Otsuka
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Process for producing vinyl chloride polymer
- Patent number 6,303,712
- Issue date Oct 16, 2001
- Shin-Etsu Chemical Co., Ltd.
- Kazuhiro Kumakura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PRODUCING VINYL CHLORIDE TYPE POLYMER
- Publication number 20220403150
- Publication date Dec 22, 2022
- Shin-Etsu Chemical Co., Ltd.
- Hiroshi FUKUDOME
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING VINYL CHLORIDE TYPE POLYMER
- Publication number 20220235159
- Publication date Jul 28, 2022
- SHIN-ETSU CHEMICAL CO., LTD.
- Hiroshi FUKUDOME
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...