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. 28, 2021
Filed:
May. 29, 2018
Tdk Corporation, Tokyo, JP;
Tsutomu Okabe, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
An EFEM includes first and second chambers, an airflow formation unit, and a gas discharge port. The first chamber includes a dry air introduction port. The second chamber is connected with a lower part of the first chamber and includes an openable door. The airflow formation unit produces a circulating airflow between the first and second chambers. The gas discharge port discharges a gas of the second chamber therefrom. The first and second chambers are connected via first and second communication sections. In the first communication section, a filter is disposed, and an airflow from the first chamber to the second chamber is generated. In the second communication section, a ventilation state is changed by a ventilation state switchable unit, and an airflow from the second chamber to the first chamber is generated.