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:
Oct. 27, 1998
Filed:
Apr. 01, 1997
Applicant:
Inventors:
Hitoshi Nagafune, Tokyo, JP;
Takaaki Fukumoto, Tokyo, JP;
Hakushi Shibuya, Tokyo, JP;
Koji Ezaki, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Toyko, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
553501 ; 553852 ; 55417 ; 55471 ; 55486 ;
Abstract
A clean dry air generating unit that includes a fan filter unit and a dry air generating apparatus arranged within a chamber of closed construction. The fan filter unit includes an open air introducing fan, a chemical filter, and a HEPA filter. The chamber of closed construction is supplied air through the fan filter unit which is then supplied to the dry air generating apparatus. Clean dry air is fed from the generating unit to an area outside of the chamber or can be reintroduced to the generating unit. The apparatus can continuously supply clean dry air at a lower cost.