Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Xdx › David Wightman
DW

David Wightman — 20 Patents

XDXdx: 13 patents #1 of 15Top 7%
XGXdx Global: 5 patents #1 of 1Top 100%
CRCarrier Commercial Refrigeration: 1 patents #40 of 64Top 65%
Arlington Heights, IL: #95 of 1,285 inventorsTop 8%
Illinois: #3,810 of 84,256 inventorsTop 5%
Overall (All Time): #214,803 of 4,157,543Top 6%
20 Patents All Time
David Wightman has been granted 20 US patents while listed as an inventor at Xdx. The first was granted in 2001 and the most recent in May 2019. David Wightman ranks #214,803 of 4,157,543 US inventors in our database (top 5.2%). Patent records list David Wightman in Arlington Heights, IL, US.

Patents per Year

Patents granted per year, 2001 to 2019Bar chart with a peak of 5 patents in 2002.peak 52001: 2 patents20012002: 5 patents20022003: 2 patents20032004: 1 patents20042005: 3 patents20052006: 1 patents20062007: 1 patents20072015: 2 patents20152018: 2 patents20182019: 1 patents2019

Issued Patents All Time

Showing 1–20 of 20 patents

Patent #TitleCo-InventorsDate
10288334 Surged vapor compression heat transfer systems with reduced defrost phase separator — 2019-05-14
10060662 Surged heat pump systems and methods of defrosting an evaporator — 2018-08-28
9879899 Surged heat pump systems and methods — 2018-01-30
9127870 Surged vapor compression heat transfer systems with reduced defrost requirements — 2015-09-08
9057547 Surged heat pump systems — 2015-06-16
7225627 Vapor compression system and method for controlling conditions in ambient surroundings — 2007-06-05
7152415 Refrigerated compartment with controller to place refrigeration system in sleep-mode Michael Micak 2006-12-26
6951117 Vapor compression system and method for controlling conditions in ambient surroundings — 2005-10-04
6915648 Vapor compression systems, expansion devices, flow-regulating members, and vehicles, and methods for using vapor compression systems — 2005-07-12
6857281 Expansion device for vapor compression system — 2005-02-22
6751970 Vapor compression system and method — 2004-06-22
6644052 Vapor compression system and method — 2003-11-11
6581398 Vapor compression system and method — 2003-06-24
6401471 Expansion device for vapor compression system — 2002-06-11
6401470 Expansion device for vapor compression system — 2002-06-11
6397629 Vapor compression system and method — 2002-06-04
6393851 Vapor compression system — 2002-05-28
6389825 Evaporator coil with multiple orifices — 2002-05-21
6314747 Vapor compression system and method — 2001-11-13
6185958 Vapor compression system and method — 2001-02-13

Frequent Collaborators

Michael Micak1 shared

Nearby-Ranked Inventors

Anthony Mertes20
Ed Merjanian20
Arthur J. Higby20
Daniel Rosenberg20
Anthony J. Kuschel20
Mark E. Fauver20
Markus Wintermantel20
Dominik Schnieders20
Christopher P. Roche20