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:
Jan. 25, 2000
Filed:
Feb. 10, 1997
Applicant:
Inventors:
Jan Schultink, Eksel, BE;
Frits Schultink, Neerpelt, BE;
Assignee:
Airflo Europe N.V., Overpelt, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
156290 ; 156292 ; 156296 ; 1563084 ;
Abstract
For manufacturing filter material, a non-woven filter web is formed from electrostatically charged dielectric fibers. In order to give dimensional stability to the filter material without adversely affecting the permeability of the filter material, filaments or narrow strips are placed essentially at a distance from each other on at least one of the two sides of the filter web and fixed to the non-woven filter web.