Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12316112 | Breaker control units and related systems and methods | Ritwik Chowdhury, Normann Fischer | 2025-05-27 |
| 12249948 | Split-phase protection of generators | Ritwik Chowdhury, Matchyaraju Alla, Normann Fischer | 2025-03-11 |
| 11631972 | Accurate modeling of equipment overexcitation damage curves | Ritwik Chowdhury, Normann Fischer, Matchyaraju Alla | 2023-04-18 |
| 11411390 | Secure and dependable restricted earth fault protection for electric power generators and transformers | Ritwik Chowdhury, Matchyaraju Alla, Satish Samineni, Normann Fischer | 2022-08-09 |
| 11316455 | Generator rotor turn-to-turn fault detection using fractional harmonics | Matchyaraju Alla, Ritwik Chowdhury, Normann Fischer, Rogerio Scharlach | 2022-04-26 |
| 11196369 | Generator loss-of-field protection | Matchyaraju Alla, Armando Guzman-Casillas, Normann Fischer | 2021-12-07 |
| 10931097 | Generator stator ground protection using third harmonic | Ritwik Chowdhury | 2021-02-23 |
| 10819261 | Security improvements for electric power generator protection | Ritwik Chowdhury, Normann Fischer | 2020-10-27 |
| 10797632 | Sensitive directional element for generator protection | Ritwik Chowdhury | 2020-10-06 |
| 10753976 | Detection of transient high torque events associated with rotating machinery in electric power systems | Normann Fischer, Derrick Haas | 2020-08-25 |
| 10578653 | Overexcitation protection for electric power system equipment | Ritwik Chowdhury | 2020-03-03 |
| 10333291 | Multiple generator ground fault detection | Ritwik Chowdhury | 2019-06-25 |
| 10288688 | Systems and methods for monitoring and protecting an electric power generator | Bogdan Z. Kasztenny, Normann Fischer, Douglas I. Taylor | 2019-05-14 |
| 9496707 | Generator protection element | Michael J. Thompson | 2016-11-15 |
| 9478378 | Preventing out-of-synchronism reclosing between power systems | Bogdan Z. Kasztenny | 2016-10-25 |
| 9007731 | Leveraging inherent redundancy in a multifunction IED | Bogdan Z. Kasztenny, Normann Fischer | 2015-04-14 |
| 8675327 | Fast impedance protection technique immune to dynamic errors of capacitive voltage transformers | Bogdan Z. Kasztenny, Iulian Raducanu | 2014-03-18 |
| 8050878 | Method and system for estimation of source impedence on electrical distribution lines | John James Dougherty, Senthoor Navaratnam | 2011-11-01 |
| 7870595 | Apparatus, methods, and system for role-based access in an intelligent electronic device | Jeffrey Mazereeuw, Claudio Cargnelli, Donald Glenn Thompson | 2011-01-11 |
| 7729428 | Method and apparatus for recognizing a change-of-state in communication signals of electronic circuits | Adil Jaffer, Zhihong Mao | 2010-06-01 |
| 7693607 | Protection and control system for electric power networks with signal and command interfaces at the primary equipment | Bogdan Z. Kasztenny, Jeffrey Mazereeuw, Ioan Marusca | 2010-04-06 |
| 7652859 | Intelligent electronic device with integrated pushbutton for use in power substation | — | 2010-01-26 |
| 7613964 | Relay device and corresponding method | — | 2009-11-03 |
| 7528611 | Methods and system for detecting winding faults in a generator with parallel windings | Bogdan Z. Kasztenny, Michael Graham McClure | 2009-05-05 |
| 7463036 | Measurement of analog coil voltage and coil current | Adil Jaffer, Zhihong Mao, William James Premerlani, Mark Gerard Adamiak | 2008-12-09 |