Simon David Hart has been granted 14 US patents while listed as an inventor at Control Techniques Limited . The first was granted in 2015 and the most recent in October 2023. Simon David Hart ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Simon David Hart in Newtown, GB.
Patents per Year Patents granted per year, 2015 to 2023 Bar chart with a peak of 3 patents in 2016. peak 3 2015: 2 patents 2015 2016: 3 patents 2016 2017: 2 patents 2017 2018: 1 patents 2018 2019: 1 patents 2019 2021: 1 patents 2021 2022: 1 patents 2022 2023: 3 patents 2023
Issued Patents All Time
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Showing 1–14 of 14 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
11791713
Method and apparatus for cooling one or more power devices
Samuel David Ahearn
2023-10-17
11757374
Method and apparatus for generating a three-phase voltage
Samuel David Ahearn , Richard Phillips , Tim Woolmer
2023-09-12
11646676
Method and apparatus for generating a three-phase voltage
Samuel David Ahearn
2023-05-09
11276622
Inverter arrangement
Tim Woolmer , Christopher Stuart Malam , Tom Hillman , Richard Phillips
2022-03-15
10985089
Semiconductor cooling arrangement
Tim Woolmer , Christopher Stuart Malam , Graham Law , Francesca Bernardine Bumpus
2021-04-20
10240838
Variable speed compressor control with sound-controlled defrost mode
Wayne M. Penn , Jacob A. Groshek
2019-03-26
$31,306,000
9893668
Control system and method
Michael Cade , Richard Mark Wain
2018-02-13
9618543
Control system for multi-phase rotary machines
—
2017-04-11
9614459
Modulation of switching signals in power converters
Antony John Webster
2017-04-04
9509222
Power conversion system
Stephen Berry , Richard Mark Wain , Dhananjay Dattatray Kapatkar , Dilesh Arvind Raut
2016-11-29
9476626
Variable speed compressor control with lost rotor mitigation
Wayne M. Penn , Jacob A. Groshek
2016-10-25
$24,952,000
9300239
Rotor control
—
2016-03-29
9197139
Rectifier charge rate controller
Stephen Berry
2015-11-24
8958222
Modulation of switching signals in power converters
—
2015-02-17