Y04S 10/22
Flexible ac transmission systems [facts] or power factor or reactive power compensating
Official title: Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
Y04S10/22 (Flexible ac transmission systems [facts] or power factor or reactive power compensating) appears on 357 US grants and 411 published applications in this corpus.
Search patents in Y04S- Granted patents
- 357
- Published applications
- 411
- Assignees
- 188
- Inventors
- 763
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 3 |
| 2003 | 0 | 6 |
| 2004 | 4 | 5 |
| 2005 | 0 | 1 |
| 2006 | 3 | 2 |
| 2007 | 4 | 3 |
| 2008 | 3 | 9 |
| 2009 | 6 | 14 |
| 2010 | 4 | 12 |
| 2011 | 11 | 16 |
| 2012 | 13 | 20 |
| 2013 | 12 | 31 |
| 2014 | 18 | 23 |
| 2015 | 16 | 28 |
| 2016 | 21 | 25 |
| 2017 | 24 | 31 |
| 2018 | 29 | 26 |
| 2019 | 33 | 30 |
| 2020 | 35 | 35 |
| 2021 | 36 | 28 |
| 2022 | 28 | 23 |
| 2023 | 19 | 16 |
| 2024 | 17 | 9 |
| 2025 | 9 | 12 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus, method and system for detecting an islanding state of a power generation device19 May 2026US 12,631,693 B2Schneider Electric Industries SAS
- Power control system, device, and information processing system19 May 2026US 12,633,965 B2Daikin Industries, Ltd.
- Surface finish manufacturing system and process12 May 2026US 12,623,391 B2Eva Last Hong Kong Limited
- Dynamic computation and heirarchical control of assets of a power grid using shunt and series connected FACTS devices21 Apr 2026US 12,609,530 B2Smart Wires Inc.
- PMU algorithm3 Mar 2026US 12,566,198 B2S&C Electric Company
- Systems and methods for dynamic rating of power grids19 Feb 2026US 2026/0051739 A1GE Vernova Infrastructure Technology LLC
- Method and system for dynamic fault detection in an electric grid29 Jan 2026US 2026/0029454 A1
- Method and system for calculating system inertia based on sliding window at moment of fault occurrence25 Dec 2025US 2025/0389749 A1Nanjing Sac Power Grid Automation Co., Ltd
- A system and a method for energised conductor phase identification based on synchronous measurements using a network model4 Dec 2025US 2025/0370022 A1Grid Instruments D.O.O.
- Fault classification and location of a pmu-equipped active distribution network using deep convolution neural network (cnn)27 Nov 2025US 2025/0363389 A1King Fahd University of Petroleum and Minerals
Most cited
By later US patents
- Digital sensor apparatus and system for protection, control, and management of electricity distribution systems231US 5,995,911 APower Measurement Ltd. · 1999
- Digital sensor apparatus and system for protection, control and management of electricity distribution systems219US 6,236,949 B1Power Measurement Ltd. · 2001
- Dynamic distributed power grid control system147US 8,401,709 B2Spirae, Inc. · 2013
- Renewable energy power generation systems131US 8,391,032 B2Enecsys Limited · 2013
- Phasor transducer apparatus and system for protection, control, and management of electricity distribution systems125US 6,694,270 B2Power Measurement Ltd. · 2004