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:
Jan. 25, 2022
Filed:
Mar. 01, 2019
Shin-etsu Polymer Co., Ltd., Tokyo, JP;
Osamu Ogawa, Saitama, JP;
Shin-Etsu Polymer Co., Ltd., Tokyo, JP;
Abstract
Corrosion resistance of valves is enhanced, while ensuring the check valve function of the valves against an inflow of outside air. Disclosed is a substrate storage container that includes: a container body for storing at least one substrate; a lid for closing an opening of the container body; and at least one valve for controlling gas flow to the container body or from the container body. The at least one valve includes an elastic, non-metallic seal lip in a communication passage that extends in a first direction and communicates between an outside of the container body and an inside of the container body. The seal lip has an umbrella-like form which closes on one side in the first direction and opens on the other side in the first direction, the seal lip abutting an inner peripheral wall of the communication passage on the other side.