EP 0964071 A1 19991215 - Ferritic stainless steel and exterior cover part for a watch made with such a steel
Title (en)
Ferritic stainless steel and exterior cover part for a watch made with such a steel
Title (de)
Ferritischer rostfreier Stahl und Aussenteil für eine Uhr aus diesem Stahl
Title (fr)
Acier inoxydable ferritique et pièce extérieure d'habillement pour montre réalisée en un tel acier
Publication
Application
Priority
- EP 98110813 A 19980612
- CH 128098 A 19980612
Abstract (en)
The steel alloy obtained by a powder metallurgical process contains at least 0.4 wt.% N, at most 0.5 wt.% Ni, and the balance iron and unavoidable impurities. Preferably, the alloy contains 10-35 wt.% of chromium and/or molybdenum and 5-20 wt.% manganese. An Independent claim is given for an external piece of a watch and which is made from the above steel alloy.
IPC 1-7
IPC 8 full level
G04B 37/18 (2006.01); C22C 33/02 (2006.01); C22C 38/00 (2006.01); C22C 38/08 (2006.01); C22C 38/22 (2006.01); C22C 38/38 (2006.01); G04B 37/22 (2006.01)
CPC (source: EP US)
C22C 33/02 (2013.01 - EP US); C22C 33/0285 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/22 (2013.01 - EP US); C22C 38/38 (2013.01 - EP US); G04B 37/22 (2013.01 - EP US)
Citation (search report)
- [A] EP 0379061 A1 19900725 - EBAUCHESFABRIK ETA AG [CH]
- [A] EP 0640695 A1 19950301 - BOEHLER YBBSTALWERKE [AT]
- [AD] DE 19513407 C1 19961010 - VSG EN & SCHMIEDETECHNIK GMBH [DE]
- [A] US 4340432 A 19820720 - HEDE ALLAN
- [A] "Stahleisenliste - Registre des Aciers Européens", 1994, VERLAG STAHLEISEN MBH, DÜSSELDORF, ALLEMAGNE, XP002083066
Designated contracting state (EPC)
CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
US 6093233 A 20000725; CN 1239153 A 19991222; EP 0964071 A1 19991215; JP 2000017403 A 20000118
DOCDB simple family (application)
US 32979399 A 19990610; CN 99109480 A 19990611; EP 98110813 A 19980612; JP 16226599 A 19990609