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:
Mar. 27, 1990
Filed:
Aug. 22, 1988
Applicant:
Inventors:
John R Fisher, Hockessin, DE (US);
Frederick E Simon, Lindenwold, NJ (US);
Assignees:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Campbell Soup Company, Camden, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
426107 ; 426111 ; 426113 ; 426234 ; 426243 ; 219 / ;
Abstract
A package with a preferentially releasable seal is provided, suitable for use in microwaveable food cooking. The seal includes a heat-releasable polymer in contact with a microwave susceptor material. Upon heating in a microwave oven, the seal releases in response to force generated by the cooking of the food.