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:
Aug. 21, 2012
Filed:
Sep. 29, 2006
Hisakazu Yasumuro, Yokohama, JP;
Shuuichi Nonaka, Yokohama, JP;
Osamu Gotou, Yokohama, JP;
Shie Nishimoto, Yokohama, JP;
Keizou Kanzaki, Yokohama, JP;
Kikuo Matsuoka, Yokohama, JP;
Hisakazu Yasumuro, Yokohama, JP;
Shuuichi Nonaka, Yokohama, JP;
Osamu Gotou, Yokohama, JP;
Shie Nishimoto, Yokohama, JP;
Keizou Kanzaki, Yokohama, JP;
Kikuo Matsuoka, Yokohama, JP;
Toyo Seikan Kaisha, Ltd., Tokyo, JP;
Abstract
Provided are a packaging container for a microwave oven that excels in the sealing performance between a container body and lid, and that at heating/cooking by a microwave oven, maintains the internal pressure of the container for a given period of time to thereby enhance the taste of contents through steaming effect, and that thereafter, can spontaneously open with certainty from a steam releasing seal part; and an efficient process for manufacturing the packaging container. In the packaging container for microwave oven having a lid heat-sealed to the periphery of a flange part of container body made of a synthetic resin so as to attain hermetic sealing, at least one steam releasing seal part with a weakened part is disposed inside the peripheral seal part of the flange part at a position separate from the peripheral seal part.