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. 14, 2021
Filed:
May. 27, 2019
YE Siang Enterprise Co., Ltd., New Taipei, TW;
Shih-Chieh Chuang, New Taipei, TW;
Ye Siang Enterprise Co., Ltd., New Taipei, TW;
Abstract
A stackable air filter module includes a base gas filter unit and at least one additional gas filter unit. The base filter unit includes a metal frame and at least one first filter body located in the filter passage of the metal frame. At least one additional filter unit is detachably superposed on the base filter unit, and the additional filter unit includes a filter frame and a second filter body located in the filter passage of the filter frame. The service life of the filter material contained in the first filter body is greater than the service life of the filter material contained in the second filter body.