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. 25, 2004
Filed:
Dec. 21, 2001
John D. Halm, Lindenhurst, IL (US);
Aida L. Carbo, Barrington, IL (US);
Michael R. Lynn, Arlington Heights, IL (US);
Richard B. Stevens, Crystal Lake, IL (US);
Charles J. Miller, McHenry, IL (US);
Peter M. Attard, Elk Grove Village, IL (US);
Therese A. Fults, Wood Dale, IL (US);
United States Gypsum Company, Chicago, IL (US);
Abstract
A rough-surfaced substrate, such as a fiberboard, is provided with a smoother surface by applying a coating comprising calcium sulfate hemihydrate which has been prevented from hydrating to gypsum by set preventer, and which sets when brought into contact with a set initiator, e.g. aluminum sulfate, preferably present on the surface of the substrate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile