CK

Charles S. Kerfoot

UF US Air Force: 10 patents #443 of 16,312Top 3%
WE Westinghouse Electric: 5 patents #593 of 5,139Top 15%
NG Northrop Grumman: 3 patents #288 of 2,250Top 15%
UA US Army: 3 patents #993 of 6,974Top 15%
📍 Pasadena, MD: #2 of 201 inventorsTop 1%
🗺 Maryland: #1,116 of 35,612 inventorsTop 4%
Overall (All Time): #212,142 of 4,157,543Top 6%
21
Patents All Time

Issued Patents All Time

Showing 1–21 of 21 patents

Patent #TitleCo-InventorsDate
5831409 Electric vehicle propulsion system employing AC induction motor control Frank A. Lindberg, David L. Schantz, Jr., Brian H. Smith, Joseph J. Springer, Patricia A. O'Donnell +17 more 1998-11-03
5634262 Method of manufacturing heat dissipating transformer coil Patricia A. O'Donnell, Joseph J. Springer 1997-06-03
5581171 Electric vehicle battery charger Patricia A. O'Donnell, David L. Schantz, Jr. 1996-12-03
5469124 Heat dissipating transformer coil Patricia A. O'Donnell, Joseph J. Springer 1995-11-21
5283463 High power self commutating semiconductor switch Ngon B. Nguyen, Franklin B. Jones, Gene A. DiGennaro 1994-02-01
5162965 Anti crow bar current interrupter for microwave tube transmitters Walter E. Milberger, Franklin B. Jones 1992-11-10
5122730 Voltage divider for a wide band domino effect high voltage regulator Walter E. Milberger, Franklin B. Jones 1992-06-16
5111382 High power, high frequency resonant inverter using MOS controlled thyristors Franklin B. Jones, Ray S. Kemerer, Charles E. Carter 1992-05-05
5070538 Wide band domino effect high voltage regulator Walter E. Milberger, Franklin B. Jones 1991-12-03
5032799 Multistage cascode radio frequency amplifier Walter E. Milberger, Daniel C. Buck, Franklin B. Jones 1991-07-16
4939450 Precision high voltage FET pulse sense and clamp apparatus statement of government interest Walter E. Milberger, Franklin B. Jones 1990-07-03
4897617 Domino effect amplifier Walter E. Milberger, Franklin B. Jones 1990-01-30
4893070 Domino effect shunt voltage regulator Walter E. Milberger, Franklin B. Jones 1990-01-09
H575 Light-weight non-saturating spaced core inductor Walter E. Milberger 1989-02-07
4743785 FET pulse control apparatus with fast rise time and constant pulse level Walter E. Milberger 1988-05-10
H436 Laser diode modulator Walter E. Milberger 1988-02-02
4721900 Self-generated converter filter Walter E. Milberger 1988-01-26
4698742 High-voltage milberger slip slide power conditioner Franklin B. Jones, Walter E. Milberger, David Everett Bulgher 1987-10-06
4686448 Slewing power supply for programmable phase shifter drive Franklin B. Jones, Walter E. Milberger 1987-08-11
4683387 Quadrature switch apparatus for multi mode phase shift drivers Franklin B. Jones, Walter E. Milberger 1987-07-28
H275 Pulse modulator Walter E. Milberger, Franklin B. Jones 1987-05-05