Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Derek Leman — 13 Patents

CACarrier: 12 patents #139 of 2,507Top 6%
PAParker-Hannifin: 1 patents #1,277 of 1,664Top 80%
Brownsburg, IN: #24 of 252 inventorsTop 10%
Indiana: #2,741 of 33,936 inventorsTop 9%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
Derek Leman has been granted 13 US patents while listed as an inventor at Carrier. The first was granted in 2001 and the most recent in December 2024. Derek Leman ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Derek Leman in Brownsburg, IN, US.

Patents per Year

Patents granted per year, 2001 to 2024Bar chart with a peak of 2 patents in 2021.peak 22001: 1 patents20012007: 1 patents2008: 1 patents20082010: 1 patents2012: 1 patents20122016: 1 patents2017: 1 patents20172018: 1 patents2020: 1 patents20202021: 2 patents2022: 1 patents20222024: 1 patents2024

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12173942 Method of operating a heat pump system Charles A. Cluff 2024-12-24
11215388 Refrigerant charge management Matthew Austin, Mark W. Shoemaker 2022-01-04
11022357 System and method of operating a variable speed compressor with a two-stage controller Matthew Austin 2021-06-01
10928080 Climate control outdoor unit with inverter cooling Mark W. Shoemaker 2021-02-23
10557667 Refrigerant to water heat exchanger Mark W. Shoemaker 2020-02-11
10006670 Method for managing a refrigerant charge in a multi-purpose HVAC system Matthew Austin, Aaron M. Bright 2018-06-26
9732998 Method and system of using a reversing valve to control at least two HVAC systems Matthew Austin 2017-08-15
9488384 Heat pump water module with condensing coil in water storage tank 2016-11-08
8267156 Streamlined orifice of outdoor unit Yu-Qi Wang, Larry D. Burns, Loren D. Hoffman, Duane V. Douglas, William Bruce Sutherlin +2 more 2012-09-18
7708052 Coil support Christopher J. Ingermann, Loren D. Hoffman, Frank J. David, John A. Wade, Larry D. Burns +2 more 2010-05-04
D562122 Corner top clip Larry D. Burns, Loren D. Hoffman, Frank J. David 2008-02-19
D538724 Tri-spoke motor cap Frank J. David, Brian L. DePerro 2007-03-20
6260709 Membrane filter element for chemical-mechanical polishing slurries Alfred K. Fritzsche 2001-07-17 $40,908,000