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:
Sep. 23, 2003
Filed:
Jul. 26, 2001
Applicant:
Inventors:
Andreas Graus, Nörten-Hardenberg, DE;
Christian Schäfer, Uslar, DE;
Assignee:
Sartorius AG, Goettingen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 2/706 ; B01D 2/708 ; B01D 2/714 ; B01D 3/501 ;
U.S. Cl.
CPC ...
B01D 2/706 ; B01D 2/708 ; B01D 2/714 ; B01D 3/501 ;
Abstract
There is disclosed a vacuum filtration device for aqueous media that includes a hydrophilic tubular filter element in a cylindrical housing and at least one hydrophobic gas-permeable membrane, coupled with a gas bleed-off valve to allow the escape of air entrained in the filtration medium.