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Patent Searching and Data


Title:
METHOD OF MARKING A SOLID-STATE MATERIAL, MARKINGS FORMED FROM SUCH METHODS AND SOLID-STATE MATERIALS MARKED ACCORDING TO SUCH A METHOD
Document Type and Number:
WIPO Patent Application WO/2021/000966
Kind Code:
A1
Abstract:
A process of forming a non-optically detectable authentication marking (210,320, 410,535) in a diamond (200,300). Authentication marking (210,320,410,535) is formed adjacent the outer surface of an article formed from a diamond material having intrinsic optical centers. Method includes the step of applying an image of predesigned authentication marking(210,320,410,535) to a region (201,310,530) of a diamond (200,300) at or adjacent the surface of the diamond (200,300) by way of a direct laser writing; wherein the fluorescence background of the diamond material from intrinsic optical center is suppressed by authentication marking(210,320, 410, 535) under fluorescent imaging, such that the non-optically detectable identifiable authentication marking (210,320,410,535) is viewable against the fluorescence background at the region (201,310,530) of the diamond (200,300) where the authentication marking (210,320,410,535) is applied.

Inventors:
YIU YAU CHUEN (CN)
CHENG KA WING (CN)
HUI KOON CHUNG (CN)
Application Number:
PCT/CN2020/104582
Publication Date:
January 07, 2021
Filing Date:
July 24, 2020
Export Citation:
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Assignee:
MASTER DYNAMIC LTD (CN)
International Classes:
B28D5/00; A44C17/00; B44C1/22
Foreign References:
US20040126703A12004-07-01
US20100062144A12010-03-11
US4467172A1984-08-21
CN101827713A2010-09-08
CN103415370A2013-11-27
Attorney, Agent or Firm:
CHINA SINDA INTELLECTUAL PROPERTY LIMITED (CN)
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