Inventor
CHENG CHRIS
US19 patents
⚠️ This page may combine multiple inventors who share the name “CHENG CHRIS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CNPC USA CORP
17 patentsUS10907416B2Feb 2, 2021
Polycrystalline diamond cutter with improved geometry for cooling and cutting evacuation and efficiency and durability
CNPC USA CORP8 citations82
US11365589B2Jun 21, 2022
Cutting element with non-planar cutting edges
CNPC USA CORP3 citations72
US10830020B2Nov 10, 2020
Tool assembly with a fluidic agitator and a coating
CNPC USA CORP2 citations72
US11499378B2Nov 15, 2022
Blade cap force modulation system for a drill bit
CNPC USA CORP4 citations71
US12337428B2Jun 24, 2025
Force modulation cartridge system for a drill bit
CNPC USA CORP1 citations62
US12104111B2Oct 1, 2024
Unique PDC microstructure and the method of making it
CNPC USA CORP0 citations62
US11808090B2Nov 7, 2023
Force modulation system for a drill bit
CNPC USA CORP0 citations62
US11499377B2Nov 15, 2022
Force modulation system for a drill bit
CNPC USA CORP1 citations62
US12011773B2Jun 18, 2024
Cutting elements with reduced variable back rake angle
CNPC USA CORP0 citations61
US11879296B2Jan 23, 2024
Blade cap force modulation system for a drill bit
CNPC USA CORP0 citations60
US11401749B2Aug 2, 2022
Cutting element with reduced friction
CNPC USA CORP0 citations59
US10450819B2Oct 22, 2019
Tool assembly with a fluidic agitator
CNPC USA CORP1 citations56
US11794290B2Oct 24, 2023
Method for forming cutters
CNPC USA CORP0 citations51
US11702891B2Jul 18, 2023
Force modulation system with an elastic force member for downhole conditions
CNPC USA CORP0 citations51
US12218610B1Feb 4, 2025
Sensor system with an interior sensor and a piezoelectric power supply
CNPC USA CORP0 citations49
US12435585B1Oct 7, 2025
Hydraulic control apparatus and method for a downhole tool
CNPC USA CORP0 citations47
US10753167B2Aug 25, 2020
Tool assembly with a fluidic agitator
CNPC USA CORP0 citations46