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:
Sep. 16, 2025
Filed:
May. 23, 2019
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Takeshi Shimizu, Osaka, JP;
Masataka Nonaka, Osaka, JP;
Haruhiko Ishikawa, Osaka, JP;
Eiichi Uriu, Osaka, JP;
Kazuya Hasegawa, Osaka, JP;
Tasuku Ishibashi, Ishikawa, JP;
Hiroyuki Abe, Osaka, JP;
Abstract
A method for manufacturing a glass panel unit includes a glue arrangement step, a pillar placement step, an assembly forming step, a bonding step, an evacuation step, and a sealing step. The evacuation step reduces pressure in an internal space by exhausting, with predetermined suction power, a gas from the internal space via a valve and an exhaust port. The valve includes a first valve allowing the gas to flow through a first channel area and a second valve allowing the gas to flow through a second channel area larger than the first channel area. The evacuation step includes a first evacuation step to be performed first and a second evacuation step to be performed next. In the first evacuation step, the first valve is opened and the second valve is closed. In the second evacuation step, the first valve is closed and the second valve is opened.