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Kazuhiro Kumakura
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Hasaki-machi, JP
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Patents Grants
last 30 patents
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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
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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 Applications
last 30 patents
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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-...