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. 23, 1993
Filed:
Jul. 24, 1991
Jeffrey T Watkins, Eden Prairie, MN (US);
Lawrence C Brandberg, Edina, MN (US);
Golden Valley Microwave Foods Inc., Edina, MN (US);
Abstract
A package is described comprising a bag with a pair of opposing face panels joined by longitudinally extending centrally projecting gussets. The bottom of the bag has a strong permanent seal containing a stiffening member or stay. The top has a rupturable seal formed from thermoplastic adhesive that allows the top to open during popping to form a vent. The bottom seal includes adhesive seals that extend diagonally from the center of the bag obliquely toward the side edges and is pinched shut to provide a temporary fin seal across the entire lower end of the bag. The temporary fin seal is folded down and bonded to an outside face of the bag to provide the stiffening stay member. During cooking, the popping of corn expands the bag and forms a bottom wall which is held quite flat by the cooperation of the bottom diagonal seals and the stiffening stay member.