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. 05, 1991
Filed:
Aug. 08, 1990
Applicant:
Inventor:
Vytautas Kupcikevicius, Oaklawn, IL (US);
Assignee:
Viskase Corporation, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65B / ;
U.S. Cl.
CPC ...
53434 ; 53479 ; 53512 ; 533748 ;
Abstract
Vacuum packaging method and apparatus for heat sealable bags in which a clamp is used to effect a temporary air-tight seal of an evacuated bag while the bag is transported through a region of atmospheric pressure to a heat sealer. After heat sealing to effect a permanent air-tight closure, the clamp is open and the bag removed.