(19)
(11) EP 2 928 589 A1

(12)

(43) Date of publication:
14.10.2015 Bulletin 2015/42

(21) Application number: 12816548.7

(22) Date of filing: 05.12.2012
(51) International Patent Classification (IPC): 
B01J 3/06(2006.01)
E21B 10/46(2006.01)
(86) International application number:
PCT/US2012/067931
(87) International publication number:
WO 2014/088569 (12.06.2014 Gazette 2014/24)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(71) Applicant: Diamond Innovations, Inc.
Worthington, OH 43085 (US)

(72) Inventors:
  • MALIK, Abds-Sami
    Westerville, Ohio 43082 (US)
  • ZHANG, Hui
    Columbus, Ohio 43240 (US)
  • GLEDHILL, Andrew
    Westerville, Ohio 43082 (US)
  • VAUGHN, Joel
    Groveport, Ohio 43125 (US)

(74) Representative: Johansson, Maria 
Sandvik Intellectual Property AB SMS
81181 Sandviken
81181 Sandviken (SE)

   


(54) PROVIDING A CATLYST FREE DIAMOND LAYER ON DRILLING CUTTERS