JD

John F. Defenbaugh

Hamilton Sundstrand: 14 patents #158 of 2,079Top 8%
SU Sundstrand: 4 patents #130 of 697Top 20%
📍 Rockford, IL: #55 of 1,291 inventorsTop 5%
🗺 Illinois: #4,396 of 84,256 inventorsTop 6%
Overall (All Time): #246,632 of 4,157,543Top 6%
18
Patents All Time

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #TitleCo-InventorsDate
12322961 Parallel channel voltage feedback Christopher E. Hopkins, Michael C. Harke 2025-06-03
11905029 Passive power sharing of paralleled sources Michael C. Harke, William S. Heglund 2024-02-20
11885850 Generator failure detection method Jordan K. Vanevenhoven, Mykola Kravchenko 2024-01-30
11671038 Control of a wound field synchronous generator for transient load response Michael C. Harke 2023-06-06
11641101 Arc fault induced differential protection isolation Joshua Berg, Jef William Good 2023-05-02
11482955 Shorted rotating diode protection for synchronous machines Brian R. Golden, Adrian E. Vandergrift 2022-10-25
11300600 Arc zone fault detection Jef William Good, Joshua Berg 2022-04-12
10469011 Shorted rotating diode protection for synchronous machines Brian R. Golden, Adrian E. Vandergrift 2019-11-05
10326394 Wound field generator overvoltage prevention Diego Rocha, Dhaval Patel, Jonathan C. Dell, Eric A. Brust, Andreas C. Koenig 2019-06-18
8970183 Overvoltage limiter in an aircraft electrical power generation system Vijay K. Maddali 2015-03-03
8941955 Overvoltage prevention in an aircraft electrical power generation system Carl A. Wagner, Vijay K. Maddali, Richard L. Young 2015-01-27
7746038 System and method for suppressing DC link voltage buildup due to generator armature reaction Vijay K. Maddali 2010-06-29
7656633 Asymmetric fault detection and protection with AC solid state power controllers Donald G. Kilroy, Thomas Doubek 2010-02-02
6967461 North-south pole determination for carrier injection sensorless position sensing systems Albert L. Markunas, Michael C. Harke, Charles J. Romenesko, Daniel M. Saban 2005-11-22
5554923 Voltage regulator and method for DC power generating system Vijay K. Maddali, Hassan Mansir 1996-09-10
5174729 Control system for controlling surge as a function of pressure oscillations and method Peter D. Waters, John M. Champagne 1992-12-29
5109676 Vapor cycle system evaporator control Peter D. Waters, Eric A. Henderson, Robert G. Glass 1992-05-05
5007245 Vapor cycle system with multiple evaporator load control and superheat control Albert L. Markunas 1991-04-16