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:
Jan. 07, 1992
Filed:
Feb. 07, 1991
James D Watkins, Prior Lake, MN (US);
David W Andreas, Minneapolis, MN (US);
David H Cox, Minneapolis, MN (US);
Golden Valley Microwave Foods Inc., Edina, MN (US);
Abstract
A coated sheet material is provided for wrapping, packaging or shipping food articles that are to be heated in a microwave oven. The sheet is formed from a paper or paperboard backing which is thermally and dimensionally stable when exposed to microwave energy. On at least one side is provided a smooth calendered surface or the sheet material is treated by processing as with a filler coating to fill the voids between the paper fibers and to thereby present a smooth surface. A microwave interactive layer is applied to the smoothed surface from a fluid or vapor state. The interactive coating can comprise carbon, a semiconductive metal coating or other microwave interactive material.