EP 1029117 B1 20040825 - METHOD FOR SEPARATING LAYERS FROM ARTICLES
Title (en)
METHOD FOR SEPARATING LAYERS FROM ARTICLES
Title (de)
VERFAHREN ZUM ENTSCHICHTEN VON KÖRPERN
Title (fr)
PROCEDE POUR L'ENLEVEMENT DE COUCHES SUR DES CORPS
Publication
Application
Priority
- CH 9800479 W 19981109
- CH 258897 A 19971110
- CH 140398 A 19980701
Abstract (en)
[origin: WO9924642A1] The present invention relates to a method for separating layers from articles made of high-speed steel and comprising at least one layer of TiN, TiCN and TiAlN. This method comprises applying an alkaline solution containing hydrogen peroxide, a base as well as a substance selected from the group comprising phosphates, phosphonates and phosphonic acids.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
C23G 1/19 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
WO 9924642 A1 19990520; DE 59811875 D1 20040930; EP 1029117 A1 20000823; EP 1029117 B1 20040825; ES 2226178 T3 20050316; JP 2001522943 A 20011120; JP 2009167534 A 20090730; JP 4326144 B2 20090902; JP 5295853 B2 20130918; US 6432219 B1 20020813
DOCDB simple family (application)
CH 9800479 W 19981109; DE 59811875 T 19981109; EP 98951155 A 19981109; ES 98951155 T 19981109; JP 2000519631 A 19981109; JP 2009109435 A 20090428; US 53046000 A 20000424