NF

Normann Fischer

SL Schweitzer Engineering Laboratories: 38 patents #6 of 418Top 2%
📍 Colfax, WA: #1 of 21 inventorsTop 5%
🗺 Washington: #1,756 of 76,902 inventorsTop 3%
Overall (All Time): #84,422 of 4,157,543Top 3%
38
Patents All Time

Issued Patents All Time

Showing 1–25 of 38 patents

Patent #TitleCo-InventorsDate
12418168 High-impedance differential protection using a diversity of signals Anushka M. Dissanayake, Jay Hartshorn, Marcos A. Donolo 2025-09-16
12316112 Breaker control units and related systems and methods Ritwik Chowdhury, Dale S. Finney 2025-05-27
12249948 Split-phase protection of generators Ritwik Chowdhury, Matchyaraju Alla, Dale S. Finney 2025-03-11
12176716 Line reactor protection security using local frequency measurement Ritwik Chowdhury, Douglas I. Taylor 2024-12-24
11631972 Accurate modeling of equipment overexcitation damage curves Ritwik Chowdhury, Dale S. Finney, 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, Dale S. Finney 2022-08-09
11316455 Generator rotor turn-to-turn fault detection using fractional harmonics Matchyaraju Alla, Ritwik Chowdhury, Dale S. Finney, Rogerio Scharlach 2022-04-26
11196369 Generator loss-of-field protection Matchyaraju Alla, Armando Guzman-Casillas, Dale S. Finney 2021-12-07
11143715 Broken conductor detection in a multiple-phase electric power delivery system Jordan David Bell, Kanchanrao Gangadhar Dase, Sajal Harmukh, Daqing Hou 2021-10-12
10962608 High-impedance fault detection using wireless current transformers Raymond W. Rice, Ravindra P. Mulpuri, James Mobley 2021-03-30
10819261 Security improvements for electric power generator protection Ritwik Chowdhury, Dale S. Finney 2020-10-27
10753976 Detection of transient high torque events associated with rotating machinery in electric power systems Dale S. Finney, Derrick Haas 2020-08-25
10522995 Overcurrent element in time domain Bogdan Z. Kasztenny, Mangapathirao Venkata Mynam, Armando Guzman-Casillas 2019-12-31
10474142 Detection of cross-country faults Dennis Haes 2019-11-12
10379991 Systems and methods for routing sampled values upon loss of primary measurement equipment Qiaoyin Yang 2019-08-13
10288688 Systems and methods for monitoring and protecting an electric power generator Bogdan Z. Kasztenny, Dale S. Finney, Douglas I. Taylor 2019-05-14
10270859 Systems and methods for system-wide digital process bus fault recording Qiaoyin Yang 2019-04-23
9435835 Validation of electric power system monitoring systems Matthew B. Watkins, David M. Prestwich 2016-09-06
9128140 Detection of a fault in an ungrounded electric power distribution system Amandeep Singh Kalra 2015-09-08
9007731 Leveraging inherent redundancy in a multifunction IED Dale S. Finney, Bogdan Z. Kasztenny 2015-04-14
8682496 Electric power system automation using time coordinated instructions Edmund O. Schweitzer, III, David E. Whitehead, Gregary C. Zweigle, Robert E. Morris 2014-03-25
8649142 Equivalent alpha plane fault determination for a multi-terminal power apparatus Bogdan Z. Kasztenny 2014-02-11
8559146 Line current differential protection upon loss of an external time reference Bogdan Z. Kasztenny, Luther S. Anderson 2013-10-15
8553379 Transformer differential protection Bogdan Z. Kasztenny 2013-10-08
8321162 Minimizing circulating current using time-aligned data Casper A. Labuschagne, Satish Samineni, Armando Guzman-Casillas 2012-11-27