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:
Mar. 06, 2007
Filed:
Feb. 04, 2004
Applicant:
Thomas Wolff, Munchberg, DE;
Inventor:
Thomas Wolff, Munchberg, DE;
Assignee:
Helsa-Automotive GmbH & Co., Gefrees, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
Described is an additional filter element for a filter apparatus for reducing emissions from a motor vehicle tank venting system. The additional filter element is connected to a main activated carbon filter and has adsorbents which, to achieve a high working capacity, in particular at 42° C., has a high micropore volume. To retain a residual loading possibly present in the micropores the adsorbents further have a mesopore volume. The micropore volume is at least 0.4 cm/g and the mesopore volume is at a maximum 0.95 cm/g.