Global Patent Index - EP 1102876 A1

EP 1102876 A1 2001-05-30 - METHOD FOR CONTACT DIFFUSION OF IMPURITIES INTO DIAMOND AND OTHER CRYSTALLINE STRUCTURES AND PRODUCTS

Title (en)

METHOD FOR CONTACT DIFFUSION OF IMPURITIES INTO DIAMOND AND OTHER CRYSTALLINE STRUCTURES AND PRODUCTS

Title (de)

VERFAHREN ZUR KONTAKTDIFFUSION VON DOTIERELEMENTEN IN DIAMANT OER ANDEREN KRISTALLINEN STRUKTUREN UND PRODUKTE

Title (fr)

PROCEDE DE DIFFUSION PAR CONTACT D'IMPURETES DANS UN DIAMANT ET AUTRES STRUCTURES CRISTALLINES ET PRODUITS OBTENUS

Publication

EP 1102876 A1 (EN)

Application

EP 99930308 A

Priority

  • US 9913566 W
  • US 8957498 P

Abstract (en)

[origin: WO9966109A1] A low free energy method for more rapidly diffusing an impurity into a diamond or other crystalline element in powdered or granular form (2), without degradation of the crystalline structure. The present method includes the steps of providing a mixture of the diamond or other crystalline element and the impurity in a solid phase; treating the mixture (3) to bring the impurity into substantially conforming contact with substantially all of the outer surface of the crystalline element; and heating the mixture (3) to a temperature between about 200 DEG C and about 2000 DEG C. As another aspect of the present invention, a diamond is disclosed having an impurity diffused into the crystalline structure thereof at a ratio of from about 0.1 part of the impurity per 1 million parts of the diamond to about 600 parts of the impurity per 1 million parts of the diamond.

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

C30B 15/20

IPC 8 full level (invention and additional information)

C30B 31/00 (2006.01); C30B 31/02 (2006.01)

CPC (invention and additional information)

C30B 31/02 (2013.01); C30B 29/04 (2013.01); C30B 31/00 (2013.01)

Designated contracting state (EPC)

BE CH DE FR GB LI SE

EPO simple patent family

WO 9966109 A1 19991223; AU 4687199 A 20000105; EP 1102876 A1 20010530; EP 1102876 A4 20030312

INPADOC legal status


2004-07-07 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20031231

2004-01-21 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20031208

2003-03-12 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20030124

2001-05-30 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010111

2001-05-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE CH DE FR GB LI SE