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. 18, 2013
Filed:
Feb. 20, 2009
Applicants:
Gijsbertus Hendrikus Maria Calis, Hulsberg, NL;
Hendrik Derk Hoving, Susteren, NL;
Inventors:
Gijsbertus Hendrikus Maria Calis, Hulsberg, NL;
Hendrik Derk Hoving, Susteren, NL;
Assignee:
Lydall Solutech B.V., , NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 46/10 (2006.01); B01D 53/22 (2006.01); B01D 71/26 (2006.01); B01D 69/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a porous membrane having a particle filtration value of at least 10 under U.S. Military Standard MIL-STD-282 (1956), where the porous membrane is a polyethylene membrane. The membranes according to the invention are particularly useful for filters such as ASHRAE filters, HEPA filters and ULPA filters for example in heating, ventilating, respirators and air conditioning applications.