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. 10, 1990
Filed:
Apr. 12, 1989
Applicant:
Inventor:
Donald E Beckett, Mississauga, CA;
Assignee:
Beckett Industries Inc., Mississauga, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B44C / ; C23F / ; C03C / ; C03C / ;
U.S. Cl.
CPC ...
1566611 ; 156634 ; 156656 ; 1566591 ; 156665 ;
Abstract
A novel laminate of a partially-demetallized polymeric material web and stiff card is used to effect microwave reconstitution of frozen pizza with a more uniform cooking than previously achieved. The polymeric material web includes a metallized region having a central portion which has a first metal density and a peripheral portion having a lesser metal density. A novel demetallizing process is employed to achieve such differential metal density by applying etchant-resistant material to the metal surface through screen prior to etching, with the number of screen lines being varied to change the density.