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George Guan
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San Jose, CA, US
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last 30 patents
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Patent Grant
Ammonium borate containing compositions for stripping residues from...
Patent number
6,875,733
Issue date
Apr 5, 2005
Advanced Technology Materials, Inc.
William A. Wojtczak
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Grant
Boric acid containing compositions for stripping residues from semi...
Patent number
6,599,870
Issue date
Jul 29, 2003
Advanced Technology Materials, Inc.
William A. Wojtczak
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Boric acid containing compositions for stripping residues from semi...
Patent number
6,492,310
Issue date
Dec 10, 2002
Advanced Technology Materials, Inc.
William A. Wojtczak
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Boric acid containing compositions for stripping residues from semi...
Patent number
6,306,807
Issue date
Oct 23, 2001
Advanced Technology Materials, Inc.
William A. Wojtczak
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Aqueous ammonium fluoride and amine containing compositions for cle...
Patent number
6,224,785
Issue date
May 1, 2001
Advanced Technology Materials, Inc.
William A. Wojtczak
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Formulations including a 1, 3-dicarbonyl compound chelating agent f...
Patent number
6,211,126
Issue date
Apr 3, 2001
Advanced Technology Materials, Inc.
William A. Wojtczak
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Patents Applications
last 30 patents
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Patent Application
Boric acid containing compositions for stripping residues from semi...
Publication number
20030040447
Publication date
Feb 27, 2003
William A. Wojtczak
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Boric acid containing compositions for stripping residues from semi...
Publication number
20010008878
Publication date
Jul 19, 2001
William A. Wojtczak
H01 - BASIC ELECTRIC ELEMENTS