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:
Jan. 11, 1994
Filed:
Aug. 20, 1992
John D McInnis, Nova Scotia, CA;
Louisiana-Pacific Corporation, Hayden Lake, ID (US);
Abstract
A dry mix-type, drywall panel joint compound is produced which comprises (a) a fine plaster which is applied to a joint formed between adjacent drywall panels in the plastic state to form a hardened material, (b) a material which imparts internal strength and workability to the joint compound, (c) a material for retaining water and inhibits shrinkage of the joint compound within the joint formed between adjacent drywall panels, and (d) a set time control agent. The more preferred joint compound formulation of this invention includes (a) stucco, (b) methyl cellulose, and (c) perlite. A longer set time version of the subject dry mix-type, drywall panel joint compound can also be provided which comprises, in addition to (a)-(d), (e) at least one water absorption agent, (f) at least one shrinkage and cracking inhibitor, (g) at least one adhesive strengthening agent, and (h) an alkaline material for raising the pH of material. The more preferred longer set time joint compound formulation comprises (e) mica, (f) bentonite clay, (g) vinyl acetate and/or vinyl alcohol, and (h) calcium hydroxide.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile