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. 04, 1997
Filed:
Mar. 03, 1995
Applicant:
Inventor:
Shinichiro Sato, Yokohama, JP;
Assignee:
Fujita Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61L / ; B01D / ;
U.S. Cl.
CPC ...
4353001 ; 55486 ; 55512 ; 96131 ; 422124 ; 435266 ;
Abstract
Contaminated air, e.g., air contaminated by exhaust gases from automobiles and factories, is purified by passing the contaminated air through a soil layer populated with microorganisms. The contaminated air is humidified before the contaminated air is passed through the soil layer or while the contaminated air is being passed through the soil layer. The soil layer may be warmed, or ozone may be supplied to the contaminated air to oxidize nitrogen monoxide in the contaminated air into nitrogen dioxide before the contaminated air is passed through the soil layer.