US 12,275,005 B2
Luminescent diamond and method of making the same
Yahua Bao, Orem, UT (US); and J. Daniel Belnap, Lindon, UT (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Appl. No. 18/701,854
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed Dec. 8, 2022, PCT No. PCT/US2022/052223
§ 371(c)(1), (2) Date Apr. 16, 2024,
PCT Pub. No. WO2023/107602, PCT Pub. Date Jun. 15, 2023.
Claims priority of provisional application 63/374,035, filed on Aug. 31, 2022.
Claims priority of provisional application 63/287,341, filed on Dec. 8, 2021.
Prior Publication US 2024/0326000 A1, Oct. 3, 2024
Int. Cl. C09K 11/65 (2006.01); B01J 3/06 (2006.01)
CPC B01J 3/067 (2013.01) [C09K 11/65 (2013.01); B01J 2203/0655 (2013.01); B01J 2203/0685 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of making luminescent diamond comprising:
placing a volume of precursor diamond grains and catalyst material in a pressure cell; and
applying an axial pressure and a radial pressure on the volume of precursor diamond grains and catalyst material, wherein the axial pressure is different from the radial pressure, resulting in a differential strain to the volume of precursor diamond grains and catalyst material by subjecting the pressure cell to high-pressure/high-temperature conditions to form one or more luminescent diamond pellets.