Adaptive clock offset estimation for protection devices without time-based synchronization
US-12556358-B2 · Feb 17, 2026 · US
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Fischer Normann patents
Fischer Normann is listed as an inventor on 45 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Fischer Normann |
| Total patents | 45 |
| First publication | Mar 19, 2015 |
| Latest publication | Feb 17, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Fault current sensor with adjacent phase fault immunity
US-12504446-B2 · Dec 23, 2025 · US
Single phase broken conductor detection
US-12461171-B2 · Nov 4, 2025 · US
Method to detect single-phase-to-ground faults in electric power systems
US-2025321292-A1 · Oct 16, 2025 · US
High-impedance differential protection using a diversity of signals
US-12418168-B2 · Sep 16, 2025 · US
Adaptive clock offset estimation for protection devices without time-based synchronization
US-2025219804-A1 · Jul 3, 2025 · US
Fault current sensor with adjacent phase fault immunity
US-2025199034-A1 · Jun 19, 2025 · US
Breaker control units and related systems and methods
US-12316112-B2 · May 27, 2025 · US
Single phase broken conductor detection
US-2025147123-A1 · May 8, 2025 · US
Adaptive protective relay event reports
US-2025132599-A1 · Apr 24, 2025 · US
Recent patents
Latest publications not already listed above.
Split-phase protection of generators
US-12249948-B2 · Mar 11, 2025 · US
Line reactor protection security using local frequency measurement
US-12176716-B2 · Dec 24, 2024 · US
High-impedance differential protection using a diversity of signals
US-2024250518-A1 · Jul 25, 2024 · US
Line reactor protection security using local frequency measurement
US-2024097449-A1 · Mar 21, 2024 · US
Split-phase protection of generators
US-2024072697-A1 · Feb 29, 2024 · US
Breaker control units and related systems and methods
US-2024022112-A1 · Jan 18, 2024 · US
Accurate modeling of equipment overexcitation damage curves
US-11631972-B2 · Apr 18, 2023 · US
Secure and dependable restricted earth fault protection for electric power generators and transformers
US-11411390-B2 · Aug 9, 2022 · US
Secure and dependable restricted earth fault protection for electric power generators and transformers
US-2022209525-A1 · Jun 30, 2022 · US
Accurate modeling of equipment overexcitation damage curves
US-2022190581-A1 · Jun 16, 2022 · US
Generator rotor turn-to-turn fault detection using fractional harmonics
US-11316455-B2 · Apr 26, 2022 · US
Generator loss-of-field protection
US-11196369-B2 · Dec 7, 2021 · US
Broken conductor detection in a multiple-phase electric power delivery system
US-11143715-B2 · Oct 12, 2021 · US
High-impedance fault detection using wireless current transformers
US-2021109147-A1 · Apr 15, 2021 · US
High-impedance fault detection using wireless current transformers
US-10962608-B1 · Mar 30, 2021 · US
Generator rotor turn-to-turn fault detection using fractional harmonics
US-2021067072-A1 · Mar 4, 2021 · US
Broken conductor detection in a multiple-phase electric power delivery system
US-2021048486-A1 · Feb 18, 2021 · US
Security improvements for electric power generator protection
US-10819261-B1 · Oct 27, 2020 · US
Detection of transient high torque events associated with rotating machinery in electric power systems
US-10753976-B2 · Aug 25, 2020 · US
Generator loss-of-field protection
US-2020076338-A1 · Mar 5, 2020 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Schweitzer Engineering Lab Inc | 45 |
| Fischer Normann | 2 |
| Finney Dale S | 1 |
| Kasztenny Bogdan Z | 1 |
| Watkins Matthew B | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| H02H7/26 | 13 |
| G01R19/2513 | 12 |
| H02H1/0007 | 9 |
| H02H7/06 | 7 |
| H02P9/006 | 7 |