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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.:

US 12012651 B1

PDFFull Text
Date of Patent:
Jun. 18, 2024

Filed:

Oct. 01, 2021

Corrosion-inhibiting protection for watch magnets, in particular neodymium-iron-boron magnets

Applicant:

Comadur SA, Le Locle, CH;

Inventors:

Alexandra Amherd-Hidalgo, Neuchatel, CH;

Alexis Boulmay, Morteau, FR;

Pierry Vuille, Les Emibois, CH;

Assignee:

Comadur SA, Le Locle, CH;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Jophy S Koshy

Assistant Examiner:

Joshua S Carpenter

Int. Cl.
CPC ...
C23C 14/48 (2006.01); C22C 38/00 (2006.01); C23C 14/02 (2006.01); C23C 14/06 (2006.01); C23C 14/08 (2006.01); G04D 3/00 (2006.01); H01F 1/057 (2006.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
C23C 14/48 (2013.01); C22C 38/005 (2013.01); C23C 14/021 (2013.01); C23C 14/028 (2013.01); C23C 14/0641 (2013.01); C23C 14/085 (2013.01); G04D 3/0097 (2013.01); H01F 1/057 (2013.01); H01F 41/026 (2013.01); C22C 2202/02 (2013.01);
Abstract

A method for protecting a neodymium-iron-boron watch magnet against corrosion is provided. The method includes a sandblasting treatment of the watch magnet surface following by an ion implantation in an oxygen plasma or a nitrogen plasma to obtain an impervious surface layer with all of the surface bonds saturated by the implanted ions acting as a barrier against oxidation and preventing corrosion of the watch magnet in a humid environment, under the usual conditions for wearing watches.

Find Patent Forward Citations

Quick Actions:

Amherd-Hidalgo, Alexandra. (2024). Corrosion-inhibiting protection for watch magnets, in particular neodymium-iron-boron magnets (U.S. Patent No. 12012651). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12012651

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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