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:
May. 29, 1979
Filed:
Nov. 21, 1977
Applicant:
Inventors:
Kazuo Kondo, Marugame, JP;
Toyoki Wano, Zentsuji, JP;
Assignee:
Okura Kogyo Kabushiki Kaisha, Marugame, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264171 ; 264209 ; 2642 / ; 264230 ; 2643 / ;
Abstract
A film for shrink packaging is prepared by extruding a tubular film made of crystalline polypropylene or crystalline ethylene-propylene copolymer containing up to 10% of ethylene monomer units, and from one to 10% of ethylene-vinylacetate copolymer containing 10 to 50% of vinyl acetate monomer units, and then biaxially stretching the tubular film.
Kondo, Kazuo. (1979). Process for preparing a polypropylene film for shrink packaging (U.S. Patent No. 4156709). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4156709
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile