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Patents Grants
last 30 patents
Information
Patent Grant
Polycrystalline silicon material
Patent number
12,351,466
Issue date
Jul 8, 2025
Tokuyama Corporation
Takuya Asano
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Silicon core wire for depositing polycrystalline silicon and produc...
Patent number
12,275,642
Issue date
Apr 15, 2025
Tokuyama Corporation
Junya Sakai
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Polycrystalline silicon material
Patent number
11,932,964
Issue date
Mar 19, 2024
Tokuyama Coporation
Takuya Asano
C30 - CRYSTAL GROWTH
Patents Applications
last 30 patents
Information
Patent Application
Polycrystalline Silicon Rod and Method for Manufacturing Same
Publication number
20220402765
Publication date
Dec 22, 2022
Tokuyama Corporation
Takamitsu Kamikawa
C01 - INORGANIC CHEMISTRY
Information
Patent Application
Silicon Core Wire for Depositing Polycrystalline Silicon and Produc...
Publication number
20220281751
Publication date
Sep 8, 2022
Tokuyama Corporation
Junya Sakai
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Polycrystalline Silicon Material
Publication number
20220204349
Publication date
Jun 30, 2022
Tokuyama Corporation
Takuya Asano
C30 - CRYSTAL GROWTH
Information
Patent Application
Polycrystalline Silicon Material
Publication number
20220195621
Publication date
Jun 23, 2022
Tokuyama Corporation
Takuya Asano
C30 - CRYSTAL GROWTH