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:
Apr. 23, 2002
Filed:
Jul. 15, 1998
Applicant:
Inventor:
Vincenzo Vassarotti, Bugnaux sur Rolle, CH;
Assignee:
Vivascience, AG, Hannover, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 2/126 ; B01D 3/315 ; B01D 2/432 ; G01N 9/30 ; G01N 3/500 ;
U.S. Cl.
CPC ...
B01D 2/126 ; B01D 3/315 ; B01D 2/432 ; G01N 9/30 ; G01N 3/500 ;
Abstract
A device for concentrating and/or purifying macromolecules in a solution has a concentration chamber ( ) with a sample reservoir ( ) for a liquid sample to be processed, a filter ( ) for filtering the liquid sample, and a filtrate container ( ) for collecting the filtrate. A gas pressure differential is created and maintained across the filter and a sealing cap ( ) for the sample reservoir ( ), which has an opening ( ) for permitting gas flow in one direction and blocking aerosol or liquid flow in an opposed direction. The present invention also provides apparatus and methods employing the device.