Inventor
PATRICK CHARLES
US7 patents
⚠️ This page may combine multiple inventors who share the name “PATRICK CHARLES”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANRIG DRILLING TECH LTD
4 patentsUS9919903B2Mar 20, 2018
Multi-speed electric motor
CANRIG DRILLING TECH LTD3 citations71
US9793781B2Oct 17, 2017
Internal closed loop cooling
CANRIG DRILLING TECH LTD4 citations71
US10615666B2Apr 7, 2020
Internal closed loop cooling
CANRIG DRILLING TECH LTD1 citations61
US9819236B2Nov 14, 2017
Methods for coupling permanent magnets to a rotor body of an electric motor
CANRIG DRILLING TECH LTD1 citations51