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Brian Randall
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Fairview, OK, US
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Patents Grants
last 30 patents
Information
Patent Grant
Modifiers for gypsum slurries and method of using them
Patent number
7,932,308
Issue date
Apr 26, 2011
United States Gypsum Company
Dennis M. Lettkeman
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Gypsum products utilizing a two-repeating unit dispersant and a met...
Patent number
7,776,462
Issue date
Aug 17, 2010
United States Gypsum Company
Qingxia Liu
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Gypsum products utilizing a two-repeating unit dispersant and a met...
Patent number
7,767,019
Issue date
Aug 3, 2010
United States Gypsum Company
Qingxia Liu
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Modifiers for gypsum slurries and method of using them
Patent number
7,608,347
Issue date
Oct 27, 2009
United States Gypsum Company
Dennis M. Lettkeman
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Fast drying gypsum products
Patent number
7,572,328
Issue date
Aug 11, 2009
United States Gypsum Company
Dennis M. Lettkeman
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Method of making a gypsum slurry with modifiers and dispersants
Patent number
7,572,329
Issue date
Aug 11, 2009
United States Gypsum Company
Qingxia Liu
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Patents Applications
last 30 patents
Information
Patent Application
GYPSUM PRODUCTS UTILIZING A TWO-REPEATING UNIT DISPERSANT AND A MET...
Publication number
20100056655
Publication date
Mar 4, 2010
Qingxia Liu
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
MODIFIERS FOR GYPSUM SLURRIES AND METHOD OF USING THEM
Publication number
20090292045
Publication date
Nov 26, 2009
Dennis M. Lettkeman
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Method of making a gypsum slurry with modifiers and dispersants
Publication number
20060278135
Publication date
Dec 14, 2006
Qingxia Liu
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Gypsum products utilizing a two-repeating unit dispersant and a met...
Publication number
20060278127
Publication date
Dec 14, 2006
United States Gypsum Company
Qingxia Liu
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Gypsum products utilizing a two-repeating unit dispersant and a met...
Publication number
20060278130
Publication date
Dec 14, 2006
Qingxia Liu
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Modifiers for gypsum slurries and method of using them
Publication number
20060278134
Publication date
Dec 14, 2006
Dennis M. Lettkeman
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Modifiers for gypsum slurries and method of using them
Publication number
20060280898
Publication date
Dec 14, 2006
United States Gypsum Company
Dennis M. Lettkeman
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Fast drying gypsum products
Publication number
20060281837
Publication date
Dec 14, 2006
United States Gypsum Company
Dennis M. Lettkeman
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Method of making a gypsum slurry with modifiers and dispersants
Publication number
20060280899
Publication date
Dec 14, 2006
United States Gypsum Company
Qingxia Liu
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES