Global Patent Index - EP 1062380 A1

EP 1062380 A1 2000-12-27 - METHOD AND INSTALLATION FOR TREATING A METAL PART SURFACE

Title (en)

METHOD AND INSTALLATION FOR TREATING A METAL PART SURFACE

Title (de)

VERFAHREN UND VORRICHTUNG ZUR OBERFLÄCHENBEHANDLUNG VON METALLISCHEN WERKSTÜCKE

Title (fr)

PROCEDE ET INSTALLATION DE TRAITEMENT DE SURFACE D'UNE PIECE METALLIQUE

Publication

EP 1062380 A1 (FR)

Application

EP 99939206 A

Priority

  • FR 9900507 W
  • FR 9802897 A

Abstract (en)

[origin: FR2775986A1] Metal component is treated using a plasma gas to deoxidize and/or degrease its surface. Surface treatment of a metal component (12) by deoxidizing and/or degreasing, comprises: (a) filling an airtight enclosure (16), in which is arranged the component (12) to be treated, with a reducing gas mixture at low pressure; (b) establishing a static magnetic field in the distinct zone of the enclosure in which the component is placed; and (c) exciting the gas mixture by means of an electromagnetic wave injected into the enclosure in a manner to generate a plasma treatment gas. The intensity of the static magnetic field corresponds to the cyclotronic electronic resonance. An Independent claim is also included for an installation for performing the above surface treatment.

IPC 1-7 (main, further and additional classification)

C23G 5/00; B08B 7/00

IPC 8 full level (invention and additional information)

B08B 7/00 (2006.01); C23G 5/00 (2006.01)

CPC (invention and additional information)

C23G 5/00 (2013.01); B08B 7/0035 (2013.01)

Citation (search report)

See references of WO 9946428A1

Designated contracting state (EPC)

BE DE ES FR GB IT NL

EPO simple patent family

FR 2775986 A1 19990917; FR 2775986 B1 20000505; EP 1062380 A1 20001227; JP 2002506128 A 20020226; US 6561198 B1 20030513; WO 9946428 A1 19990916

INPADOC legal status


2003-12-10 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Effective date: 20031013

2003-01-08 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20021126

2002-04-24 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: L'AIR LIQUIDE, S.A. A DIRECTOIRE ET CONSEIL DE SUR

- Ref Legal Event Code: RAP1

2000-12-27 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001010

2000-12-27 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE DE ES FR GB IT NL