The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 2023
Filed:
Sep. 13, 2013
Element Six Technologies Limited, Oxfordshire, GB;
Harpreet Kaur Dhillon, Oxfordshire, GB;
Ian Friel, Oxfordshire, GB;
Daniel James Twitchen, Santa Clara, CA (US);
Sarah Louise Geoghegan, Berkshire, GB;
Helen Jennifer Gallon, Oxfordshire, GB;
Neil Perkins, Oxfordshire, GB;
Philip Maurice Martineau, Berkshire, GB;
Element Six Technologies Limited, Didcot, GB;
Abstract
A coloured single crystal CVD synthetic diamond material comprising: a plurality of layers, wherein the plurality of layers includes at least two sets of layers which differ in terms of their defect composition and colour, wherein defect type, defect concentration, and layer thickness for each of the at least two sets of layers is such that if the coloured single crystal CVD diamond material is fabricated into a round brilliant cut diamond comprising a table and a culet, and having a table to culet depth greater than 1 mm, the round brilliant cut diamond comprises a uniform colour as viewed by naked human eye under standard ambient viewing conditions in at least a direction through the table to the culet.