Inventor
LETTKEMAN DENNIS MARK
US9 patents
Patents
9 patentsUS10662114B2May 26, 2020
Ultra-light cementitious compositions and related methods
UNITED STATES GYPSUM CO18 citations90
US7056964B2Jun 6, 2006
High strength flooring compositions
UNITED STATES GYPSUM CO32 citations87
US7338990B2Mar 4, 2008
High molecular weight additives for calcined gypsum and cementitious compositions
UNITED STATES GYPSUM CO16 citations80
US7374611B2May 20, 2008
Sprayable machinable media
UNITED STATES GYPSUM CO5 citations71
US9975808B2May 22, 2018
Ultra-light cementitious compositions and related methods
UNITED STATES GYPSUM CO4 citations69
US9708220B2Jul 18, 2017
Cementitious patch compositions and methods
UNITED STATES GYPSUM CO4 citations69
US9944556B2Apr 17, 2018
Compositions with synthetic gypsum and methods
UNITED STATES GYPSUM CO4 citations68
US9346996B1May 24, 2016
Oil well cementing products with synthetic gypsum and methods
UNITED STATES GYPSUM CO3 citations68
US12291485B2May 6, 2025
Gypsum cement compositions with aggregate stabilizers and methods for forming floor underlayment
UNITED STATES GYPSUM CO0 citations55