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. 30, 2026
Filed:
Nov. 17, 2023
Applicant:
Pfeiffer Vacuum Technology Ag, Asslar, DE;
Inventors:
Assignee:
Pfeiffer Vacuum Technology AG, Asslar, DE;
Primary Examiner:
Int. Cl.
CPC ...
F04C 29/02 (2006.01); F04C 25/02 (2006.01); F04C 27/00 (2006.01); F04D 29/02 (2006.01); F04D 29/28 (2006.01); F04D 29/08 (2006.01);
U.S. Cl.
CPC ...
F04C 25/02 (2013.01); F04C 27/00 (2013.01); F04D 29/02 (2013.01); F04D 29/026 (2013.01); F04D 29/284 (2013.01); F04C 2220/10 (2013.01); F04C 2230/91 (2013.01); F04D 29/083 (2013.01);
Abstract
The present invention relates to a pump, in particular a vacuum pump, comprising a pump-active component having a coating, wherein the coating comprises an oxide layer, which is in particular formed by anodic oxidation in an acidic electrolyte and which has pores, and a fluorine-free polymer-based and/or sol-gel-based sealing, and wherein the pores of the oxide layer are at least partly covered by the sealing and/or impregnated with the sealing and/or filled with the sealing. The present invention further relates to a method of sealing a porous oxide layer.