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. 23, 2007
Filed:
Jul. 26, 2000
Applicants:
Helen Dukes, Blackley, GB;
John David Payne, Blackley, GB;
Inventors:
Helen Dukes, Blackley, GB;
John David Payne, Blackley, GB;
Assignee:
Arch UK Biocides Limited, West Yorkshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61G 17/007 (2006.01); D21J 3/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
An air-filter for a circulating and/or recirculating air system using a filter medium containing a microbiologically effective amount of a polymeric biguanide or salt thereof. Also claimed is a method for reducing odors and/or air-borne micro-organisms in a circulating or recirculating air system using the air-filter, and a method for protecting an air-filter medium against microbial degradation by incorporating in, or on, the medium a microbiologically effective amount of a polymeric biguanide or salt thereof.