Inventor
CHONG ELLIS F H
GB28 patents
⚠️ This page may combine multiple inventors who share the name “CHONG ELLIS F H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ROLLS ROYCE PLC
21 patentsUS9621090B2Apr 11, 2017
Variable speed generator having multiple exciter windings and selectable, independently activatable pole configurations
ROLLS ROYCE PLC8 citations79
US11255216B2Feb 22, 2022
Electric machine
ROLLS ROYCE PLC6 citations74
US11121639B2Sep 14, 2021
Voltage converter
ROLLS ROYCE PLC2 citations72
US11063527B2Jul 13, 2021
Converter
ROLLS ROYCE PLC2 citations72
US8350656B2Jan 8, 2013
Rotary transformer
ROLLS ROYCE PLC5 citations67
US10122228B2Nov 6, 2018
Sleeve for an electrical machine
ROLLS ROYCE PLC5 citations66
US10084355B2Sep 25, 2018
Electrical machines
ROLLS ROYCE PLC3 citations66
US11930709B2Mar 12, 2024
Electrical machine and power electronics converter
ROLLS ROYCE PLC1 citations62
US11387724B2Jul 12, 2022
Dual-rotor electric machine
ROLLS ROYCE PLC1 citations59
US10637326B2Apr 28, 2020
Variable gear ratio electrical machine
ROLLS ROYCE PLC1 citations59
US12027940B2Jul 2, 2024
Rectifier
ROLLS ROYCE PLC0 citations56
US9998062B2Jun 12, 2018
Axial flux permanent magnet machine
ROLLS ROYCE PLC1 citations51
US12431748B2Sep 30, 2025
Aircraft power and propulsion systems comprising permanent magnet electrical machines
ROLLS ROYCE PLC0 citations50
US12416244B2Sep 16, 2025
Aircraft power and propulsion systems comprising permanent magnet electrical machines
ROLLS ROYCE PLC0 citations50
US11303181B2Apr 12, 2022
Preventing electrical breakdown
ROLLS ROYCE PLC0 citations49
US11522428B2Dec 6, 2022
Electric machine with winding conductors of non-uniform shape
ROLLS ROYCE PLC0 citations48
US10892664B2Jan 12, 2021
Segmented electrical machine
ROLLS ROYCE PLC0 citations46
US11171524B2Nov 9, 2021
Electromechanical system
ROLLS ROYCE PLC0 citations44
US10770958B2Sep 8, 2020
Electrical machine
ROLLS ROYCE PLC0 citations40
US10680503B2Jun 9, 2020
Active screening for an electrical machine
ROLLS ROYCE PLC0 citations40
US10873243B2Dec 22, 2020
Electrical machine
ROLLS ROYCE PLC0 citations35
ROLLS ROYCE DEUTSCHLAND LTD & CO KG
6 patentsUS11827371B1Nov 28, 2023
Electrical machines for aircraft power and propulsion systems
ROLLS ROYCE DEUTSCHLAND LTD & CO KG7 citations83
US12040669B1Jul 16, 2024
Electrical machines for aircraft power and propulsion systems with air cooling of coils
ROLLS ROYCE DEUTSCHLAND LTD & CO KG4 citations72
US11824410B1Nov 21, 2023
Electrical machines for aircraft power and propulsion systems
ROLLS ROYCE DEUTSCHLAND LTD & CO KG2 citations70
US12206305B2Jan 21, 2025
Electrical machines for aircraft power and propulsion systems
ROLLS ROYCE DEUTSCHLAND LTD & CO KG0 citations60
US11973385B1Apr 30, 2024
Electrical machines for aircraft power and propulsion systems
ROLLS ROYCE DEUTSCHLAND LTD & CO KG1 citations60
US11990805B1May 21, 2024
Electrical machines for aircraft power and propulsion systems having a defined machine parameter based on a ratio between an active parts torque density and a power factor
ROLLS ROYCE DEUTSCHLAND LTD & CO KG0 citations49