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:
Mar. 07, 2000
Filed:
Jul. 13, 1998
Applicant:
Inventor:
Ushio Hase, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
95 82 ; 73 2339 ; 73 3102 ; 73 6152 ; 96104 ; 210656 ; 2101982 ;
Abstract
In a denuder (2) serving as a gas collection apparatus, an absorption liquid supply tube (4) for spraying absorption liquid from a nozzle (4a) to the inner wall of a denuder pipe (2a) is provided at the upper portion of the denuder pipe (2a). A sample atmospheric air supply tube (7) for supplying sample atmospheric air into the denuder (2) is provided at the lower portion of the denuder pipe (2a). On the inner wall of the denuder pipe (2a) is formed a photocatalyst thin film layer (13) containing photocatalyst which is optically excited to be made super-hydrophilic upon irradiation of light having specific wavelengths (for example, ultraviolet rays) thereto.