EP 3159746 B1 20180606 - HEAVILY DOPED SILICON HAIRSPRING FOR TIMEPIECE
Title (en)
HEAVILY DOPED SILICON HAIRSPRING FOR TIMEPIECE
Title (de)
HOCHDOTIERTE SILIZIUMFEDER FÜR UHR
Title (fr)
SPIRAL EN SILICIUM FORTEMENT DOPÉ POUR PIÈCE D'HORLOGERIE
Publication
Application
Priority
EP 15190441 A 20151019
Abstract (en)
[origin: US2017108831A1] A balance spring for an oscillator of a timepiece, wherein it comprises a component part, in particular at least a coil or a portion of a coil, provided with heavily doped silicon having an ion density greater than or equal to 1018 at/cm3, in order to permit the thermo-compensation of the oscillator.
IPC 8 full level
G04B 17/06 (2006.01); G04B 17/22 (2006.01)
CPC (source: CN EP US)
G04B 17/06 (2013.01 - CN); G04B 17/063 (2013.01 - US); G04B 17/066 (2013.01 - CN EP US); G04B 17/22 (2013.01 - EP US); G04B 17/227 (2013.01 - EP US)
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 3159746 A1 20170426; EP 3159746 B1 20180606; CN 106597828 A 20170426; CN 106597828 B 20210212; JP 2017083434 A 20170518; JP 6869689 B2 20210512; US 10539926 B2 20200121; US 2017108831 A1 20170420
DOCDB simple family (application)
EP 15190441 A 20151019; CN 201611078699 A 20161019; JP 2016204033 A 20161018; US 201615295449 A 20161017