Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
DT

David Reginald Trainer — 84 Patents

Rolls-Royce Plc: 41 patents #21 of 2,886Top 1%
ATAlstom Technology: 20 patents #7 of 1,544Top 1%
GE: 16 patents #1,876 of 36,430Top 6%
LLLucas Industries Limited: 1 patents #219 of 499Top 45%
GSGoodrich Control Systems: 1 patents #19 of 59Top 35%
GLGec Alsthom Limited: 1 patents #10 of 35Top 30%
CLCoal Industry (Patents) Limited: 1 patents #73 of 230Top 35%
Overall (All Time): #20,511 of 4,157,543Top 1%
84 Patents All Time
David Reginald Trainer has been granted 84 US patents while listed as an inventor at Rolls-Royce Plc. The first was granted in 1984 and the most recent in December 2025. David Reginald Trainer ranks #20,511 of 4,157,543 US inventors in our database (top 0.49%). Patent records list David Reginald Trainer in Derby, TN, GB.

Patents per Year

Patents granted per year, 1984 to 2025Bar chart with a peak of 12 patents in 2025.peak 121984: 1 patents19841996: 1 patents2002: 1 patents20022006: 1 patents2009: 3 patents20092010: 5 patents2012: 6 patents20122013: 4 patents2014: 11 patents20142015: 6 patents2016: 8 patents20162017: 7 patents2018: 4 patents20182019: 2 patents2020: 1 patents20202021: 3 patents2023: 1 patents20232024: 7 patents2025: 12 patents2025

Issued Patents All Time

Showing 1–25 of 84 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12494708 Circuitry and method for transitioning between modes of operation during an electrical fault Francisco Javier Chivite Zabalza, Mark SWEET, Matthew E. Morris, Zafer Jarrah 2025-12-09
12445046 Circuitry and methods for detecting an electrical fault in power conversion circuitry Francisco Javier Chivite Zabalza, Mark SWEET, Matthew E. Morris 2025-10-14
12431748 Aircraft power and propulsion systems comprising permanent magnet electrical machines Ellis F H Chong, Mark SWEET, Gian Incerpi 2025-09-30
12416244 Aircraft power and propulsion systems comprising permanent magnet electrical machines Ellis F H Chong, Mark SWEET, Gian Incerpi 2025-09-16
12418170 Electrical power system converter control Francisco Javier Chivite Zabalza, Mark SWEET, Matthew C. Morris, Zafer Jarrah, James Campbell 2025-09-16
12395091 Electrical power system Mark SWEET, Gian Incerpi, Jonathan Stevens 2025-08-19
12388385 Electrical power system Ellis F H Chong 2025-08-12
12352212 Electrically starting a gas turbine engine Mark SWEET, Matthew S. CARTWRIGHT 2025-07-08
12326109 Electrical power system converter control Francisco Javier Chivite Zabalza, Mark SWEET, Matthew C. Morris, Zafer Jarrah, James Campbell 2025-06-10
12311786 Power electronics converter Francisco Javier Chivite Zabalza, Mark SWEET, Matthew C. Morris 2025-05-27
12304315 Electrical converter Francisco Javier Chivite Zabalza, Mark SWEET 2025-05-20
12224673 Electrical power system Francisco Javier Chivite Zabalza, Mark SWEET, Luke George 2025-02-11
12172763 Electrical power system Francisco Javier Chivite Zabalza, Mark SWEET, Gian Incerpi 2024-12-24
12046894 Current limiting diode Mark SWEET 2024-07-23
12027940 Rectifier Ellis F H Chong, Jonathan Stevens 2024-07-02
11976611 Gas turbine engine Paul R Davies, Gareth E Moore, Stephen M. Husband, David P. SCOTHERN, Luke George 2024-05-07
11905887 Restarting a gas turbine engine Gareth E Moore, Paul R Davies, Stephen M. Husband, David P. SCOTHERN, Luke George +1 more 2024-02-20
11879413 Gas turbine engine Paul R Davies, Gareth E Moore, Stephen M. Husband, David P. SCOTHERN, Luke George 2024-01-23
11873109 Electrical power system Francisco Javier Chivite Zabalza, Mark SWEET, Luke George, Gian Incerpi 2024-01-16
11837894 Electrical power system Francisco Javier Chivite Zabalza, Mark SWEET, Gian Incerpi, Luke George 2023-12-05
11121639 Voltage converter Zhigang Sun, Ellis F H Chong 2021-09-14
11063527 Converter Ellis F H Chong, Zhigang Sun 2021-07-13
10985671 Alternate arm converter Rajaseker Reddy Ginnareddy, Carl David Barker 2021-04-20 $31,456,000
10560014 Fault protection for voltage source converters Javier Chivite-Zabalza, Jonathan Christopher NICHOLLS, Konstantin VERSHININ, Ikenna Bruce EFIKA, Francisco Jose MORENO MUNOZ +2 more 2020-02-11 $39,494,000
10310003 Fault location in DC networks Colin Charnock Davidson, Carl David Barker, Oleg Bagleybter 2019-06-04 $24,165,000