Y02E 40/10
Flexible ac transmission systems [facts]
Official title: Flexible AC transmission systems [FACTS]
Y02E40/10 (Flexible ac transmission systems [facts]) appears on 489 US grants and 366 published applications in this corpus.
Search patents in Y02E- Granted patents
- 489
- Published applications
- 366
- Assignees
- 215
- Inventors
- 966
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 9 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 7 | 0 |
| 1993 | 8 | 0 |
| 1994 | 12 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 9 | 0 |
| 1998 | 12 | 0 |
| 1999 | 13 | 0 |
| 2000 | 12 | 0 |
| 2001 | 5 | 1 |
| 2002 | 4 | 3 |
| 2003 | 6 | 5 |
| 2004 | 2 | 8 |
| 2005 | 5 | 6 |
| 2006 | 7 | 6 |
| 2007 | 5 | 5 |
| 2008 | 5 | 19 |
| 2009 | 1 | 7 |
| 2010 | 14 | 14 |
| 2011 | 11 | 10 |
| 2012 | 7 | 8 |
| 2013 | 8 | 16 |
| 2014 | 14 | 18 |
| 2015 | 9 | 21 |
| 2016 | 20 | 14 |
| 2017 | 12 | 31 |
| 2018 | 37 | 23 |
| 2019 | 21 | 25 |
| 2020 | 24 | 19 |
| 2021 | 23 | 28 |
| 2022 | 23 | 20 |
| 2023 | 29 | 20 |
| 2024 | 17 | 14 |
| 2025 | 13 | 9 |
| 2026 | 9 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Utilization of distributed generator inverters as statcom22 Sep 2026US 12,744,380 B2
- Use of distributed generator (DG) inverters as STATCOMs for decreasing line losses18 Aug 2026US 12,710,780 B2
- Arrangement and a method for balancing power in an AC power transmission system2 Jun 2026US 12,645,188 B2Hitachi Energy Ltd
- Arc discharge detection method and detection device for battery system, and battery energy storage system19 May 2026US 12,631,687 B2Goodwe Technologies Co., Ltd.
- Triple-function battery energy storage system for hybrid microgrid system19 May 2026US 12,633,748 B2
- Modularized ess and power distribution system6 Aug 2026US 2026/0229912 A1Joule Case Inc.
- Auxiliary power tap assemblies for battery energy storage systems and battery energy storage systems and methods including same23 Jul 2026US 2026/0213539 A1TE Connectivity Solutions GmbH
- Cable skid rapid deployment system for modular battery energy storage systems (bess)2 Jul 2026US 2026/0188818 A1Fluence Energy, LLC
- Smart skid support structure system for modular battery energy storage systems (bess)2 Jul 2026US 2026/0188820 A1Fluence Energy, LLC
- Dynamic power flow controller (dpfc) for regulating power flow in a power transmission line25 Jun 2026US 2026/0178063 A1
Most cited
By later US patents
- Apparatus and method for dynamic voltage restoration of utility distribution networks274US 5,329,222 AWestinghouse Electric Corp. · 1994
- Multilevel cascade voltage source inverter with seperate DC sources182US 5,642,275 ALockheed Martin Energy System, Inc. · 1997
- Transmission line dynamic impedance compensation system176US 5,198,746 AWestinghouse Electric Corp. · 1993
- Power line conditioner using cascade multilevel inverters for voltage regulation, reactive power correction, and harmonic filtering154US 6,075,350 ALockheed Martin Energy Research Corporation · 2000
- Battery energy storage power conditioning system120US 5,798,633 AGeneral Electric Company · 1998