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:
Oct. 31, 2000
Filed:
Nov. 17, 1998
Applicant:
Inventors:
Bertrand Van Acoleyen, Kapelle-op-den-bos, BE;
Toussaint Dolmans, Sinking Spring, PA (US);
Assignee:
Cemplank, Inc., Bandon, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E04G / ;
U.S. Cl.
CPC ...
5274519 ; 52518 ; 5271705 ; 527332 ;
Abstract
A cementitious building product such as a siding clapboard is composed of about 30 to 50% cement, 40 to 60% sand and 5 to 15% fiber, by volume. A preferred mix has about 35% portland cement, 55% fine sand and 10% cellulose fiber by volume. As so composed the product can be worked after curing in a manner similar to wood. At least one elongated cut is formed after curing the product in the shape of an elongated board or plank, preferably by planing or routing the product along an edge to form a distinct bead that can be round, teardrop shaped, crowned or coved.