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. 01, 2005
Filed:
Sep. 13, 1999
Applicants:
Patrick Mueller, Staefa, CH;
Ivo Schumacher, Jona, CH;
Inventors:
Patrick Mueller, Staefa, CH;
Ivo Schumacher, Jona, CH;
Assignee:
DRM, Dr. Mueller AG, Maennedorf, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D029/11 ;
U.S. Cl.
CPC ...
Abstract
The multiple-tube filter proposed consists of at least one perforated filter element (15) whose outside surface has grooves (2) in a spiral round it, the surface between the grooves (2) preferably curving outwards in a circular arc.