EP 3781992 B1 20220504 - METHOD FOR MANUFACTURING A TIMEPIECE MAINSPRING OF SILICIUM BASED MATERIAL
Title (en)
METHOD FOR MANUFACTURING A TIMEPIECE MAINSPRING OF SILICIUM BASED MATERIAL
Title (de)
HERSTELLUNGSVERFAHREN EINER ZUGFEDER AUS SILIZIUM FÜR EINE UHR
Title (fr)
PROCÉDÉ DE FABRICATION D'UN RESSORT HORLOGER À BASE DE SILICIUM
Publication
Application
Priority
- EP 18167501 A 20180416
- IB 2018060218 W 20181218
Abstract (en)
[origin: WO2019202378A1] The method for manufacturing a timepiece spring according to the invention comprises the following steps: producing, using silicon, a part having the desired shape of the timepiece spring; thermally oxidizing the part; deoxidizing the part; carrying out an annealing of the part in a reducing atmosphere; forming a silicon oxide layer on the part.
IPC 8 full level
G04B 1/14 (2006.01); G04B 17/06 (2006.01); G04F 7/08 (2006.01)
CPC (source: EP US)
G04B 1/145 (2013.01 - EP US); G04B 17/066 (2013.01 - US); G04B 21/06 (2013.01 - US); G04D 3/0069 (2013.01 - US); G04D 3/0076 (2013.01 - US); G04D 3/0089 (2013.01 - US); G04F 7/0804 (2013.01 - EP); G04B 21/06 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3557333 A1 20191023; EP 3557333 B1 20201104; CN 111801627 A 20201020; CN 111801627 B 20211228; EP 3781992 A1 20210224; EP 3781992 B1 20220504; JP 2021521455 A 20210826; JP 7204776 B2 20230116; TW 201944182 A 20191116; TW I793285 B 20230221; US 11796966 B2 20231024; US 2021109483 A1 20210415; WO 2019202378 A1 20191024
DOCDB simple family (application)
EP 18167501 A 20180416; CN 201880090643 A 20181218; EP 18836894 A 20181218; IB 2018060218 W 20181218; JP 2020556962 A 20181218; TW 108110063 A 20190322; US 201817047936 A 20181218