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:
Aug. 19, 2014
Filed:
Nov. 01, 2011
Applicants:
Jee Yong Kim, Seoul, KR;
Rae Eun Park, Seongnam-si, KR;
Inventors:
Jee Yong Kim, Seoul, KR;
Rae Eun Park, Seongnam-si, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An absorption cell includes a first absorption layer formed of a first absorbent, and a second absorption layer formed of a second absorbent having a higher density than the first absorbent and coated on the surface of the first absorption layer so as to prevent generation of dust particles from the first absorption layer. The upper surface of the first absorption layer is coated with the second absorption layer formed of the high-density absorbent, thereby preventing generation of minute dust particles and thus preventing secondary contamination.