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. 27, 1982
Filed:
Aug. 27, 1980
Kenneth P Thompson, Canton, NC (US);
Richard C Ihde, Strongsville, OH (US);
Champion International Corporation, Stamford, CT (US);
Abstract
In a multi-layer sheet material from which containers adapted to heat food in microwave ovens may be erected, the sheet material comprising a core layer and a transparent surface layer on each side of the core layer, the improvement comprising an intermediate layer located between the core and at least one of the adjacent surface layers, the intermediate layer being a relatively thin layer of polyethylene terephthalate and a design printed on one side of the intermediate layer whereby the design is visible through the adjacent surface layer and is prevented by the adjacent surface layer from being physically contacted.