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:
Sep. 07, 1982
Filed:
Oct. 14, 1980
Applicant:
Inventors:
Assignee:
Wolff Walsrode Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428349 ; 428354 ; 428411 ; 428447 ; 4284758 ; 428516 ; 428520 ; 428523 ; 428451 ;
Abstract
A sealable multilayer film for packaging comprising a polypropylene film and at least one sealing layer of an ethylene homo- or copolymer wherein the sealing layer contains an additive combination of a long-chain amine, a thermoplastic polymer incompatible with the sealing polymer and a polydialkyl siloxane.
Rosenthal, Heinrich. (1982). Sealable multilayer film of polyolefins (U.S. Patent No. 4348457). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4348457
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile