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:
Feb. 01, 2005
Filed:
Oct. 16, 2002
Applicants:
Chang-su Lim, Kyunggki-do, KR;
Suk-hee Im, Kyunggi-do, KR;
Jung-sung Hwang, Kyunggi-do, KR;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 2901 ; B01D 4612 ;
U.S. Cl.
CPC ...
Abstract
A fresh air duct is configured to direct fresh air filtered by an air conditioning system towards a clean room downstream from the fresh air duct, the fresh air having a first level of particle density. A separate particle filter in the fresh air duct, located downstream from the air conditioning system and upstream from the clean room, is configured to further filter the fresh air to provide filtered fresh air having a second level of particle density therein that is less than the first level. Related methods are also disclosed.