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:
Nov. 25, 2025
Filed:
Oct. 28, 2021
Fujimori Kogyo Co., Ltd., Tokyo, JP;
Toshihiko Mori, Tokyo, JP;
Naoto Fujikawa, Tokyo, JP;
ZACROS Corporation, Tokyo, JP;
Abstract
A packaging bag has a bottom member folded in half along a folding line and sandwiched between two body members. Body seal portions with surfaces of the body members joined along left and right circumferential edge portions of the packaging bag are formed on a side above the folding line. A bottom seal portion with an inner surface of the bottom member joined to the inner surfaces of the body members is formed on a side below the folding line. An unsealed portion surrounded by the body seal portions and the bottom seal portion accommodates a content. Resin layers of the body members and the bottom member are formed of a polyethylene-based resin film. Boundary portions between the bottom seal portion and the unsealed portion have a convex shape toward the upper side of the packaging bag near a part in contact with the body seal portions.