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:
Jun. 25, 2002
Filed:
Aug. 07, 2000
Alan Smithies, Overland Park, KS (US);
James Roy Doehla, Shawnee Mission, KS (US);
Anthony Joseph Thill, Overland Park, KS (US);
BHA Technologies, Inc., Kansas City, MO (US);
Abstract
A pleatable and cleanable filter media ( ) that has a HEPA filtration rating. The filter media ( ) includes a porous primary filtration layer ( ). The primary filtration layer tending to be less than HEPA rated upon being damaged. A first substrate layer ( ) attached to said primary filtration layer ( ) for maintaining the shape of the filter media ( ). The first substrate layer ( ) includes a non-woven filtration media and being less than HEPA rated. A second substrate layer ( ) attached to the first substrate layer ( ) functioning as a secondary filter in the event of damage to the primary filtration layer ( ). The second substrate layer ( ) includes a non-woven filtration media and being less than HEPA rated.