1
James W Langford Jr, Robert Delwiche: Hardfacing with coated diamond particles. Dresser, Baker & Botts L, May 26, 1998: US05755299 (82 worldwide citation)

Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles dispersed within and bonded to a metallic matrix deposit. The coating on the diamond particles may be formed from materials and alloys such as particles, tungsten carbide, and tungsten carbide/ ...


2
James W Langford Jr, Robert Delwiche: Hardfacing with coated diamond particles. Dresser, Baker & Botts L, May 26, 1998: US05755298 (70 worldwide citation)

Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles dispersed within and bonded to a metallic matrix deposit. The coating on the diamond particles may be formed from materials and alloys such as particles, tungsten carbide, and tungsten carbide/ ...


3
Langford James W Jr, Delwiche Robert: Hardfacing with coated diamond particles. Dresser, May 20, 1998: EP0842346-A1

Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles dispersed within and bonded to a metallic matrix deposit. The coating on the diamond particles may be formed from materials and alloys such as particles, tungsten carbide, and tungsten carbide/ ...


4
James W Langford, Robert Delwiche: Hardfacing with coated diamond particles. Dresser, zhang minhua, October 7, 1998: CN96196684

Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles dispersed within and bonded to a metallic matrix deposit. The coating on the diamond particles may be formed from materials and alloys such as particles, tungsten carbide, and tungsten carbide/ ...


5
Langford James W Jr, Delwiche Robert: Hardfacing with coated diamond particles. Dresser, sMILLS Jerry W, February 20, 1997: WO/1997/006339

Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles (44) dispersed within and bonded to a metallic matrix deposit (20). The coating (42) on the diamond particles (44) may be formed from materials and alloys such as particles of tungsten carbide, ...