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. 17, 1987
Filed:
May. 27, 1986
Applicant:
Inventors:
Ladislav Benisek, Burley-in-Wharfedale, GB;
Gerald K Edmondson, Bradford, GB;
Assignee:
Wool Development International Limited, Ilkley, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ; F01N / ;
U.S. Cl.
CPC ...
502403 ; 55 68 ; 55 73 ; 55 74 ; 55487 ; 422177 ; 4232132 ; 423219 ; 423239 ; 423244 ; 423247 ; 502150 ; 502159 ;
Abstract
A filter for noxious gases such as sulphur dioxide or nitrogen dioxide comprises a keratinous fibre substrate within which is deposited an effective amount of manganese dioxide. The fibres, preferably sheep's wool, may be in the form of a fibrous bat and the manganese dioxide is deposited from acidified permanganate solution. The filter is most effective when maintained in the wet state.