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. 14, 2015
Filed:
Feb. 17, 2011
Marcus Kennedy, Dusseldorf, DE;
Han-rainer Brillert, Burscheid, DE;
Michael Zinnabold, Burscheid, DE;
Marcus Kennedy, Dusseldorf, DE;
Han-Rainer Brillert, Burscheid, DE;
Michael Zinnabold, Burscheid, DE;
Federal-Mogul Burscheid GmbH, Burscheid, DE;
Abstract
A helical compression spring, preferably of steel, in particular CrSi steel or CrNi steel, comprises a coating which has at least one a-C: H: Me coating or a plurality of layers of CrN () and a-C: H: Me coatings () alternately. In a method for coating a helical compression spring, preferably of steel, a plurality of layers of CrN and a-C: H: Me coatings are applied alternately.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile