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:
Nov. 26, 2013
Filed:
Feb. 01, 2011
Applicant:
Ira John Westerman, Wadsworth, OH (US);
Inventor:
Ira John Westerman, Wadsworth, OH (US);
Assignee:
OMNOVA Solutions Inc., Fairlawn, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 257/02 (2006.01); C08F 291/00 (2006.01); C08F 2/22 (2006.01); C08F 2/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
Gypsum wallboard can be made lighter and less dense, without sacrificing strength, by adding to the gypsum slurry used in making the board a styrene butadiene polymer latex substantially stable against divalent ions in which the styrene butadiene polymer includes at least 0.25 wt. % of an ionic monomer.