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:
Mar. 29, 1983
Filed:
Jun. 12, 1978
Applicant:
Inventor:
Michel Kotcharian, Paris, FR;
Assignee:
Technigaz, , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428251 ; 428285 ; 428286 ; 428334 ; 428337 ; 428339 ; 428433 ; 428442 ; 4284256 ; 220901 ;
Abstract
A relatively thin, flexible, impervious, sheet-like laminated building material comprising at least three continuous overlying layers of yielding material adapted to withstand very severe cold conditions, bonded together and consisting of at least one first mechanically strong supporting endmost layer having a thickness of from about 0.3 to about 0.6 mm; at least one impervious film-like layer having a thickness of from 0.04 to 0.10 mm and at least one second endmost lining layer providing at least a mechanical and at least temporary protection and having a thickness from about 0.3 to 0.6 mm.