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. 21, 1989
Filed:
May. 26, 1988
Applicant:
Inventors:
Hans-Ulrich Breitscheidel, Siegburg, DE;
Rudolf Kautz, Hennef, DE;
Karl-Heinz Sandermann, Lemgo, DE;
Assignees:
Huels Troisdorf AG, Troisdorf, DE;
Balsam Sportstattenbau & Co. KG, Steinhagen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428 17 ; 156 72 ; 428 95 ; 4283144 ; 4283148 ; 4283186 ; 4283191 ; 4283199 ; 428461 ; 428464 ; 428516 ;
Abstract
A multilayer composite sheet, especially for use as a padding layer underneath artificial grass, or turf includes a bottom layer of expanded synthetic resin, particularly of closed-cell polyethylene foam, and a metallic foil flatly bonded to the foam material. The multilayer composite sheet exhibits low weight per unit area, low water absorption, and low thermal linear expansion suitable for exposure to ambient weather conditions especially sunlight.