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:
Aug. 12, 1997
Filed:
Dec. 21, 1994
Applicant:
Inventor:
Franz Kaulich, Bobingen, DE;
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; D04H / ;
U.S. Cl.
CPC ...
428137 ; 428138 ; 428340 ; 428457 ; 428458 ; 428489 ; 442378 ;
Abstract
Described is a multilayered base layer comprising at least one textile layer and at least one copper layer which are joined together by needling, wherein the puncture holes produced in the copper layer by the needling have a diameter of not more than 1 mm, and a process for producing it. Also described is the use of this layer as a starting material for producing bituminized sealing felts and also the use of the multilayered base layer and of the bituminized sealing felts produced therefrom for discharging electrostatic charges.