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Yoshiaki Kurosawa
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Fixed abrasive-grain processing device, method of fixed abrasive-gr...
Patent number
9,550,264
Issue date
Jan 24, 2017
Sumco Corporation
Tomohiro Hashii
B24 - GRINDING POLISHING
Information
Patent Grant
Polishing solution distribution apparatus and polishing apparatus h...
Patent number
9,017,145
Issue date
Apr 28, 2015
Sumco Corporation
Yoshiaki Kurosawa
B24 - GRINDING POLISHING
Patents Applications
last 30 patents
Information
Patent Application
MANUFACTURING METHOD FOR SEMICONDUCTOR WAFER
Publication number
20120315739
Publication date
Dec 13, 2012
SUMCO CORPORATION
Tomohiro Hashii
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Application
FIXED ABRASIVE-GRAIN PROCESSING DEVICE, METHOD OF FIXED ABRASIVE-GR...
Publication number
20120071064
Publication date
Mar 22, 2012
SUMCO CORPORATION
Tomohiro Hashii
B24 - GRINDING POLISHING
Information
Patent Application
POLISHING SOLUTION DISTRIBUTION APPARATUS AND POLISHING APPARATUS H...
Publication number
20110263183
Publication date
Oct 27, 2011
SUMCO CORPORATION
Yoshiaki KUROSAWA
B24 - GRINDING POLISHING