Dennis Mark Lettkeman

Person

Noble, OK, US

People

Patents Grantslast 30 patents

Information Patent Grant
Ultra-light cementitious compositions and related methods
- Patent number 10,662,114
- Issue date May 26, 2020
- United States Gypsum Company
- Dennis Mark Lettkeman
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Resilient wallboard mounting channel accommodating standard fasteners
- Patent number 10,260,241
- Issue date Apr 16, 2019
- United States Gypsum Company
- Raymond A. Kaligian
- E04 - BUILDING
Information Patent Grant
Pourable compositions
- Patent number 10,221,100
- Issue date Mar 5, 2019
- United States Gypsum Company
- Michael Intorcia
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Ultra-light cementitious compositions and related methods
- Patent number 9,975,808
- Issue date May 22, 2018
- United States Gypsum Company
- Dennis Mark Lettkeman
- E04 - BUILDING
Information Patent Grant
Compositions with synthetic gypsum and methods
- Patent number 9,944,556
- Issue date Apr 17, 2018
- United States Gypsum Company
- Dennis Mark Lettkeman
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Cementitious patch compositions and methods
- Patent number 9,708,220
- Issue date Jul 18, 2017
- United States Gypsum Company
- Dennis Mark Lettkeman
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Oil well cementing products with synthetic gypsum and methods
- Patent number 9,346,996
- Issue date May 24, 2016
- United States Gypsum Company
- Dennis Mark Lettkeman
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Method of modifying beta stucco using diethylene-triamine-pentaacet...
- Patent number 8,343,273
- Issue date Jan 1, 2013
- United States Gypsum Company
- Dennis M. Lettkeman
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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
Gypsum mixtures for forming solids
- Patent number 7,754,007
- Issue date Jul 13, 2010
- United States Gypsum Company
- Dennis Lettkeman
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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
Information Patent Grant
Continuous slurry dispenser apparatus
- Patent number 7,516,909
- Issue date Apr 14, 2009
- United States Gypsum Company
- Raymond A. Kaligian, II
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
High strength flooring compositions
- Patent number 7,504,165
- Issue date Mar 17, 2009
- United States Gypsum Company
- Dennis M. Lettkeman
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Sprayable machinable media
- Patent number 7,374,611
- Issue date May 20, 2008
- United States Gypsum Company
- Dennis Mark Lettkeman
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
High molecular weight additives for calcined gypsum and cementitiou...
- Patent number 7,338,990
- Issue date Mar 4, 2008
- United States Gypsum Company
- Dennis Mark Lettkeman
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
High strength flooring compositions
- Patent number 7,056,964
- Issue date Jun 6, 2006
- United States Gypsum Company
- Dennis Mark Lettkeman
- B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents

Information Patent Application
GYPSUM CEMENT COMPOSITIONS WITH AGGREGATE STABILIZERS AND METHODS F...
- Publication number 20230110018
- Publication date Apr 13, 2023
- United States Gypsum Company
- Karl Glenn Niessner
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
RESILIENT WALLBOARD MOUNTING CHANNEL ACCOMMODATING STANDARD FASTENERS
- Publication number 20190078335
- Publication date Mar 14, 2019
- United States Gypsum Company
- Raymond A. KALIGIAN
- E04 - BUILDING
Information Patent Application
ULTRA-LIGHT CEMENTITIOUS COMPOSITIONS AND RELATED METHODS
- Publication number 20180237341
- Publication date Aug 23, 2018
- United States Gypsum Company
- Dennis Mark Lettkeman
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
POURABLE COMPOSITIONS
- Publication number 20170349492
- Publication date Dec 7, 2017
- United States Gypsum Company
- Michael Intorcia
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
CEMENTITIOUS PATCH COMPOSITIONS AND METHODS
- Publication number 20160340251
- Publication date Nov 24, 2016
- United States Gypsum Company
- Dennis Mark Lettkeman
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
COMPOSITIONS WITH SYNTHETIC GYPSUM AND METHODS
- Publication number 20160107931
- Publication date Apr 21, 2016
- United States Gypsum Company
- Dennis Mark Lettkeman
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
ULTRA-LIGHT CEMENTITIOUS COMPOSITIONS AND RELATED METHODS
- Publication number 20150315081
- Publication date Nov 5, 2015
- United States Gypsum Company
- Dennis Mark Lettkeman
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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
GYPSUM MIXTURES FOR FORMING SOLIDS
- Publication number 20090101045
- Publication date Apr 23, 2009
- Dennis 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
High strength flooring compositions
- Publication number 20060280970
- 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
Information Patent Application
High strength flooring compositions
- Publication number 20050250888
- Publication date Nov 10, 2005
- Dennis Mark Lettkeman
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
High molecular weight additives for calcined gypsum and cementitiou...
- Publication number 20050239924
- Publication date Oct 27, 2005
- Dennis Mark Lettkeman
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Sprayable machinable media
- Publication number 20050235882
- Publication date Oct 27, 2005
- Dennis Mark Lettkeman
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
Continuous slurry dispenser apparatus
- Publication number 20050127208
- Publication date Jun 16, 2005
- Raymond A. Kaligian
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
Continuous slurry dispenser apparatus
- Publication number 20020117559
- Publication date Aug 29, 2002
- Raymond A. Kaligian
- B28 - WORKING CEMENT, CLAY, OR STONE

Dennis Mark Lettkeman

Person

Patents Grantslast 30 patents

Ultra-light cementitious compositions and related methods

Resilient wallboard mounting channel accommodating standard fasteners

Pourable compositions

Ultra-light cementitious compositions and related methods

Compositions with synthetic gypsum and methods

Cementitious patch compositions and methods

Oil well cementing products with synthetic gypsum and methods

Method of modifying beta stucco using diethylene-triamine-pentaacet...

Modifiers for gypsum slurries and method of using them

Gypsum products utilizing a two-repeating unit dispersant and a met...

Gypsum products utilizing a two-repeating unit dispersant and a met...

Gypsum mixtures for forming solids

Modifiers for gypsum slurries and method of using them

Fast drying gypsum products

Method of making a gypsum slurry with modifiers and dispersants

Continuous slurry dispenser apparatus

High strength flooring compositions

Sprayable machinable media

High molecular weight additives for calcined gypsum and cementitiou...

High strength flooring compositions

Patents Applicationslast 30 patents

GYPSUM CEMENT COMPOSITIONS WITH AGGREGATE STABILIZERS AND METHODS F...

RESILIENT WALLBOARD MOUNTING CHANNEL ACCOMMODATING STANDARD FASTENERS

ULTRA-LIGHT CEMENTITIOUS COMPOSITIONS AND RELATED METHODS

POURABLE COMPOSITIONS

CEMENTITIOUS PATCH COMPOSITIONS AND METHODS

COMPOSITIONS WITH SYNTHETIC GYPSUM AND METHODS

ULTRA-LIGHT CEMENTITIOUS COMPOSITIONS AND RELATED METHODS

GYPSUM PRODUCTS UTILIZING A TWO-REPEATING UNIT DISPERSANT AND A MET...

MODIFIERS FOR GYPSUM SLURRIES AND METHOD OF USING THEM

GYPSUM MIXTURES FOR FORMING SOLIDS

Method of making a gypsum slurry with modifiers and dispersants

Gypsum products utilizing a two-repeating unit dispersant and a met...

Gypsum products utilizing a two-repeating unit dispersant and a met...

Modifiers for gypsum slurries and method of using them

Modifiers for gypsum slurries and method of using them

High strength flooring compositions

Fast drying gypsum products

Method of making a gypsum slurry with modifiers and dispersants

High strength flooring compositions

High molecular weight additives for calcined gypsum and cementitiou...

Sprayable machinable media

Continuous slurry dispenser apparatus

Continuous slurry dispenser apparatus