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:
May. 07, 2013
Filed:
Sep. 28, 2010
Applicants:
John A. Westland, Auburn, WA (US);
David J. O'callaghan, Bonney Lake, WA (US);
Inventors:
John A. Westland, Auburn, WA (US);
David J. O'Callaghan, Bonney Lake, WA (US);
Assignee:
Weyerhaeuser NR Company, Federal Way, WA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B 28/14 (2006.01); C04B 40/00 (2006.01); C04B 9/04 (2006.01); D21F 11/00 (2006.01); D21H 11/00 (2006.01); D21H 13/00 (2006.01); D21H 15/00 (2006.01); D21H 17/00 (2006.01); D21H 19/00 (2006.01); D21H 21/00 (2006.01); D21H 23/00 (2006.01); D21H 25/00 (2006.01); D21C 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of curing cementitious material comprising added a carboxylated bleached wood pulp fiber to the material during mixing. The fiber has a carboxyl content of from 10 to 70 meq/100 g cellulose fiber. The fibers are 0.1 to 5% by weight of the dry weight of the cementitious material. The structure produced by the method. The autogenous shrinkage of the cementitious material is reduced.