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:
Apr. 18, 1989
Filed:
Mar. 22, 1988
Applicant:
Inventors:
Bernhard Lenz, Rheinmuenster, DE;
Kurt Zwintzscher, Willstaedt, DE;
Dietrich Gruehn, Appenweier, DE;
Hubert Fehrenbach, Kehl, DE;
Norbert Holl, Battenberg, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B31B / ;
U.S. Cl.
CPC ...
493190 ; 156216 ; 156227 ; 264235 ; 493251 ; 493946 ;
Abstract
The blanks punched out from a film web and folded to form the jacket are then heated for a short time and cooled again in order to eliminate stresses in the jacket material which give rise to deformations and are also produced by the action of heat during processing of the material.
Quick Actions:
Lenz, Bernhard. (1989). Jacket for a flexible magnetic disk and production of the jacket (U.S. Patent No. 4822327). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4822327
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile