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:
May. 26, 2009
Filed:
Mar. 24, 2006
Applicants:
Tung-sheng Shih, Taipei Hsien, TW;
Chuen-jinn Tsai, Hsinchu, TW;
Cheng-hsiung Huang, Hsinchu, TW;
Inventors:
Assignee:
Institute of Occupational Safety and Health, Council of Labor Affairs, Taipei Hsien, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 59/50 (2006.01); G01N 1/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A porous metal denuder has a cascade impactor to collect aerosol particles of different diameters, two porous metal discs downstream to collect basic and acidic gases, respectively, and a final filter to collect particles smaller than the cut diameter of the last stage of the cascade impactor which will penetrate the two porous metal discs.