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Johann Glas
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Burghausen, DE
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Patents Grants
last 30 patents
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Patent Grant
Double-side polishing process with reduced scratch rate and device...
Patent number
6,645,862
Issue date
Nov 11, 2003
Wacker Siltronic Gesellschaft fur Halbleitermaterialien AG
Guido Wenski
B24 - GRINDING POLISHING
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Patent Grant
Method and apparatus for slicing crystalline wafers aided by magnet...
Patent number
5,030,910
Issue date
Jul 9, 1991
Wacker-Chemitronic Gesellschaft fur Elektronik-Grundstoffe mbH
Joachim Junge
B28 - WORKING CEMENT, CLAY, OR STONE
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Patent Grant
Process for sawing crystal rods or blocks into thin wafers
Patent number
4,844,047
Issue date
Jul 4, 1989
Wacker-Chemitronic Gesellschaft fur Elektronik-Grundstoffe mbH
Gerhard Brehm
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
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Patent Application
Double-side polishing process with reduced scratch rate and device...
Publication number
20020115387
Publication date
Aug 22, 2002
WACKER SILTRONIC GESELLSCHAFT FUR HALBLEITERMATERIALIEN AG
Guido Wenski
B24 - GRINDING POLISHING