Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10153909 | Power over ethernet powered device configured for low duty-cycle operation | Vince András Horváth, Tamás Marozsák, Peter Onody | 2018-12-11 |
| 9954430 | Overvoltage and surge protection in a power over ethernet device | Vince András Horváth, Tamás Marozsák, Peter Onody | 2018-04-24 |
| 9927779 | Power sourcing equipment and method of detecting inrush fault errors | — | 2018-03-27 |
| 9696272 | Systems and methods for humidity measurement using dielectric material-based relative humidity sensors | Elzbieta A. Ledwosinska, William H. Simcoe | 2017-07-04 |
| 8754542 | Apparatus including a gate drive circuit for selectively providing power to a powered device through multiple wire pairs | John N. Wilson | 2014-06-17 |
| 8716886 | Circuit device and method of current limit-based disconnect detection | D. Matthew Landry | 2014-05-06 |
| 8412961 | Circuit and method for detecting a legacy powered device in a power over Ethernet system | Endre Kovaks | 2013-04-02 |
| 7855669 | Circuit device to generate a high precision control signal | — | 2010-12-21 |
| 7715165 | System and method of surge protection in a powered device | Richard Bruce Webb, D. Matthew Landry | 2010-05-11 |
| 6940969 | Capacitor cancellation method and apparatus | Robert Chen, Dewayne A. Spires | 2005-09-06 |
| 6925178 | Returning ringing signals through the tip amplifier of subscriber-line interface circuitry | David Paul Chabinec, Dean M. Umberger | 2005-08-02 |
| 6842518 | Frequency-dependent impedance synthesis for DSL interface circuits | Robert Chen, Dewayne A. Spires | 2005-01-11 |
| 6657496 | Amplifier circuit with regenerative biasing | Robert Chen, Joseph H. Havens, Dewayne A. Spires | 2003-12-02 |
| 5974363 | Self-testing of smart line cards | Christine Mary Gervesh, Randy Lee Hafer, Ronald Joseph Rees, Dewayne A. Spires, Robert Vaiden, II | 1999-10-26 |
| 5881129 | Self-monitoring line interface circuit | Robert Chen, Dewayne A. Spires | 1999-03-09 |
| 5854839 | Dual voltage, self-monitoring line circuit | Robert Chen, Dewayne A. Spires | 1998-12-29 |
| 5848149 | Subscriber line interface and power circuit | Robert Chen, Paul W. Frazier, Andrew Marsh, Apurba Roy, Dewayne A. Spires | 1998-12-08 |
| 4573065 | Radial high voltage switch structure | Hans W. Becke, Adrian R. Hartman, Muhammed Ayman Shibib, Robert K. Smith | 1986-02-25 |