The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2020
Filed:
Mar. 12, 2018
Applicant:
United States Gypsum Company, Chicago, IL (US);
Inventors:
Assignee:
UNITED STATES GYPSUM COMPANY, Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B 22/14 (2006.01); C04B 28/14 (2006.01); C04B 24/22 (2006.01); C04B 22/16 (2006.01); C04B 18/24 (2006.01); C04B 24/38 (2006.01); C04B 20/02 (2006.01); C04B 40/00 (2006.01); C04B 111/00 (2006.01); C04B 103/12 (2006.01); C04B 103/52 (2006.01);
U.S. Cl.
CPC ...
C04B 22/143 (2013.01); C04B 18/24 (2013.01); C04B 20/026 (2013.01); C04B 22/16 (2013.01); C04B 24/226 (2013.01); C04B 24/383 (2013.01); C04B 28/14 (2013.01); C04B 28/145 (2013.01); C04B 40/0042 (2013.01); C04B 2103/12 (2013.01); C04B 2103/52 (2013.01); C04B 2111/0062 (2013.01);
Abstract
A modified gypsum set accelerator and a method of preparing the same is provided, which includes dry loose finely ground particles of a mixture of ground dry calcium sulfate dihydrate and a grinding aid selected from one or more of beta-naphthalene sulfonate formaldehyde condensate, trimetaphosphate phosphate salt, tripolyphosphate salt, tetra-pyrophosphate salt, and pregelatinized starch.