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:
Oct. 24, 2023
Filed:
Dec. 18, 2018
Applicant:
Patek Philippe SA Geneve, Geneva, CH;
Inventors:
Assignee:
PATEK PHILIPPE SA GENEVE, Geneva, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04D 3/00 (2006.01); G04B 1/14 (2006.01); G04B 17/06 (2006.01); G04B 21/06 (2006.01);
U.S. Cl.
CPC ...
G04D 3/0069 (2013.01); G04B 1/145 (2013.01); G04B 17/066 (2013.01); G04B 21/06 (2013.01); G04D 3/0076 (2013.01); G04D 3/0089 (2013.01);
Abstract
A method for producing a timepiece spring includes the following steps: producing a piece based on silicon, having the desired shape of the timepiece spring; thermally oxidising the piece; deoxidising the piece; annealing the piece in a reducing atmosphere; forming a silicon oxide layer on the piece.