Global Patent Index - EP 0978572 A1

EP 0978572 A1 2000-02-09 - Gold base alloy for jewellery

Title (en)

Gold base alloy for jewellery

Title (de)

Goldlegierung für Schmuckzwecke

Title (fr)

Alliage d'or pour la bijouterie

Publication

EP 0978572 A1 (DE)

Application

EP 99109579 A

Priority

DE 19834858 A

Abstract (en)

Gold alloy used for jewelry contains 70-80 % gold, 15-25 % copper and 0.1-0.5 % gallium.

Abstract (de)

Eine Goldlegierung für Schmuckzwecke enthält 70 bis 80 % Gold und 15 bis 25 % Kupfer. Die Legierung ist dadurch gekennzeichnet, daß sie 0,1 bis 5 % Gallium enthält.

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

C22C 5/02

IPC 8 full level (invention and additional information)

A44C 27/00 (2006.01); C22C 5/02 (2006.01)

CPC (invention and additional information)

C22C 5/02 (2013.01)

Citation (search report)

  • [X] US 5338378 A 19940816 - OHTA MICHIO [JP], et al
  • [A] US 3861455 A 19750121 - INGERSOLL CLYDE E
  • [X] CHEMICAL ABSTRACTS, vol. 123, no. 12, 18 September 1995, Columbus, Ohio, US; abstract no. 150335, OUCHIDA, R. ET AL: "Effects of Au/Cu ratio and gallium content on the low-temperature age-hardening in Au-Cu-Ga alloys" XP002121973 & J. MATER. SCI. (1995), 30(15), 3863-6, XP002123010J. MATER. SCI. (1995), 30(15), 3863-6
  • [X] CHEMICAL ABSTRACTS, vol. 123, no. 12, 18 September 1995, Columbus, Ohio, US; abstract no. 152835, WATANABE, IKUYA ET AL: "Dimensional changes related to ordering in an gold-copper-3% gallium allo at intraoral temperature" XP002121974 & DENT. MATER. (1994), 10(6), 369-74, XP002123011DENT. MATER. (1994), 10(6), 369-74
  • [A] PATENT ABSTRACTS OF JAPAN vol. 013, no. 258 (M - 838) 15 June 1989 (1989-06-15)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0978572 A1 20000209; DE 19834858 A1 20000210; DE 19834858 C2 20030102

INPADOC legal status


2001-05-16 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20000810

2000-10-18 [AKX] PAYMENT OF DESIGNATION FEES

2000-02-09 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-02-09 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI