Global Patent Index - EP 1093534 A1

EP 1093534 A1 20010425 - METHOD FOR REMOVING LAYERS OF HARD MATERIAL

Title (en)

METHOD FOR REMOVING LAYERS OF HARD MATERIAL

Title (de)

VERFAHREN ZUM ENTSCHICHTEN VON HARTSTOFFSCHICHTEN

Title (fr)

PROCEDE POUR ENLEVER DES COUCHES DE SUBSTANCE DURE

Publication

EP 1093534 A1 20010425 (DE)

Application

EP 99920529 A 19990531

Priority

  • CH 9900234 W 19990531
  • CH 126998 A 19980611
  • CH 140498 A 19980701

Abstract (en)

[origin: WO9964646A1] The invention relates to a method for removing layers of hard material other than titanium nitride from hard metal substrates. According to said method, an intermediate layer of titanium nitride is applied between the hard metal substrate and the layer of hard material and the hard material is removed by selectively dissolving said intermediate layer through pores of the layer of hard material.

IPC 1-7

C23G 1/20; C23G 1/19; C23G 1/24

IPC 8 full level

C23G 5/00 (2006.01); C23G 1/19 (2006.01); C23G 1/20 (2006.01); C23G 1/24 (2006.01)

CPC (source: EP)

C23G 1/19 (2013.01); C23G 1/20 (2013.01); C23G 1/24 (2013.01)

Citation (search report)

See references of WO 9964646A1

Designated contracting state (EPC)

CH DE FR GB LI SE

DOCDB simple family (publication)

WO 9964646 A1 19991216; DE 59914591 D1 20080207; EP 1093534 A1 20010425; EP 1093534 B1 20071226; JP 2002517615 A 20020618; JP 4824163 B2 20111130; US 2001013356 A1 20010816; US 6706122 B2 20040316

DOCDB simple family (application)

CH 9900234 W 19990531; DE 59914591 T 19990531; EP 99920529 A 19990531; JP 2000553634 A 19990531; US 73572300 A 20001207