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:
Nov. 29, 1977
Filed:
Apr. 23, 1973
Applicant:
Inventor:
Gyula Balla, Malmo, SW;
Assignee:
Tetra Pak International AB, Lund, SW;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ; H05B / ;
U.S. Cl.
CPC ...
156380 ; 93DI / ; 156273 ; 219 1081 ;
Abstract
A device to heat seal at least two thermoplastic layers using heat generated by the dielectric loss from a high frequency generator.