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:
Nov. 16, 1993
Filed:
Jul. 16, 1992
Applicant:
Inventors:
Assignee:
Nichias Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; B01J / ;
U.S. Cl.
CPC ...
422122 ; 422120 ; 55524 ; 55527 ; 55DI / ; 428116 ; 423219 ; 423581 ; 502324 ;
Abstract
An ozone filter for decomposing ozone in the air is disclosed. The ozone filter is composed of a carrier formed by paper made of inorganic fibers having a porosity of 70 to 95%. The carrier is impregnated with a solution of fine powder-like activated manganese dioxide dispersed in water and having a particle size of 0.3 to 50 .mu.m and a specific surface area of not less than 100 m.sup.2 /g in an amount of not less than 40 g/m.sup.2, on a dry white base of activated manganese dioxide, which is allowed to adhere to the carrier, and is then dried. The ozone filter thus produced is more active and has a longer life with a reduced pressure loss than conventional ozone filters.