Inventor
JOHNSTONE NORMAN E
US6 patents
Patents
6 patentsUS4853085AAug 1, 1989
Neutral sized paper for use in the production of gypsum wallboard
UNITED STATES GYPSUM CO65 citations94
US4548676AOct 22, 1985
Paper having calcium sulfate mineral filler for use in the production of gypsum wallboard
UNITED STATES GYPSUM CO59 citations94
US4470877ASep 11, 1984
Paper having calcium sulfate mineral filler for use in the production of gypsum wallboard
UNITED STATES GYPSUM CO65 citations94
US4372814AFeb 8, 1983
Paper having mineral filler for use in the production of gypsum wallboard
UNITED STATES GYPSUM CO70 citations94
US5106600AApr 21, 1992
Process for producing tabular acicular gypsum crystals
UNITED STATES GYPSUM CO8 citations72
US4801355AJan 31, 1989
Tabular acicular gypsum and method of filling paper
UNITED STATES GYPSUM CO9 citations72