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Yasufumi KAWAKAMI
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method for producing silicon single crystal
Patent number
11,814,745
Issue date
Nov 14, 2023
Sumco Corporation
Yasufumi Kawakami
C30 - CRYSTAL GROWTH
Information
Patent Grant
N-type silicon single crystal production method, n-type silicon sin...
Patent number
11,702,760
Issue date
Jul 18, 2023
Sumco Corporation
Koichi Maegawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
N-type silicon single crystal production method, n-type silicon sin...
Patent number
11,377,755
Issue date
Jul 5, 2022
Sumco Corporation
Koichi Maegawa
C30 - CRYSTAL GROWTH
Information
Patent Grant
Method for producing silicon single crystal
Patent number
11,242,617
Issue date
Feb 8, 2022
Sumco Corporation
Koichi Maegawa
C30 - CRYSTAL GROWTH
Information
Patent Grant
Method for manufacturing silicon single crystal, flow straightening...
Patent number
10,916,425
Issue date
Feb 9, 2021
Sumco Corporation
Fukuo Ogawa
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
METHOD FOR PRODUCING SILICON SINGLE CRYSTAL
Publication number
20240026564
Publication date
Jan 25, 2024
SUMCO CORPORATION
Yasufumi KAWAKAMI
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD FOR GROWING SILICON SINGLE CRYSTAL
Publication number
20240003049
Publication date
Jan 4, 2024
SUMCO CORPORATION
Yasufumi KAWAKAMI
C30 - CRYSTAL GROWTH
Information
Patent Application
N-TYPE SILICON SINGLE CRYSTAL PRODUCTION METHOD, N-TYPE SILICON SIN...
Publication number
20230295835
Publication date
Sep 21, 2023
SUMCO CORPORATION
Koichi MAEGAWA
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD FOR PRODUCING SILICON SINGLE CRYSTAL
Publication number
20210040642
Publication date
Feb 11, 2021
SUMCO CORPORATION
Yasufumi KAWAKAMI
C30 - CRYSTAL GROWTH
Information
Patent Application
N-TYPE SILICON SINGLE CRYSTAL PRODUCTION METHOD, N-TYPE SILICON SIN...
Publication number
20200224329
Publication date
Jul 16, 2020
SUMCO CORPORATION
Koichi MAEGAWA
C30 - CRYSTAL GROWTH
Information
Patent Application
N-TYPE SILICON SINGLE CRYSTAL PRODUCTION METHOD, N-TYPE SILICON SIN...
Publication number
20200141024
Publication date
May 7, 2020
SUMCO CORPORATION
Koichi MAEGAWA
C30 - CRYSTAL GROWTH
Information
Patent Application
SINGLE CRYSTAL SILICON PRODUCTION METHOD, EPITAXIAL SILICON WAFER P...
Publication number
20200135460
Publication date
Apr 30, 2020
SUMCO CORPORATION
Yasuhito NARUSHIMA
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD FOR PRODUCING SILICON SINGLE CRYSTAL
Publication number
20200087814
Publication date
Mar 19, 2020
SUMCO CORPORATION
Koichi MAEGAWA
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD FOR MANUFACTURING SILICON SINGLE CRYSTAL, FLOW STRAIGHTENING...
Publication number
20200027732
Publication date
Jan 23, 2020
SUMCO CORPORATION
Fukuo OGAWA
H01 - BASIC ELECTRIC ELEMENTS