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. 09, 2012
Filed:
Apr. 06, 2009
Cheng-hang Chi, Midlothian, VA (US);
Hyun Sung Lim, Midlothian, VA (US);
LU Zhang, Midlothian, VA (US);
Cheng-Hang Chi, Midlothian, VA (US);
Hyun Sung Lim, Midlothian, VA (US);
Lu Zhang, Midlothian, VA (US);
E I du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A filtration medium is disclosed for use in air filters used in heating, ventilating and air conditioning systems. The medium contains at least one nanofiber layer of fibers having diameters less than 1 μm and at least one upstream layer, the medium having sufficient holding capacity for dust particles that efficiency loss and pressure loss across the medium are minimized during use.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile