H02H 9/021
Current limitation using saturable reactors
Official title: {Current limitation using saturable reactors (H02H9/023 takes precedence)}
H02H9/021 (Current limitation using saturable reactors) appears on 75 US grants and 75 published applications in this corpus.
Search patents in H02H- Granted patents
- 75
- Published applications
- 75
- Assignees
- 59
- Inventors
- 183
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 0 | 1 |
| 2005 | 2 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 2 | 2 |
| 2011 | 0 | 0 |
| 2012 | 2 | 5 |
| 2013 | 2 | 1 |
| 2014 | 1 | 8 |
| 2015 | 3 | 7 |
| 2016 | 8 | 4 |
| 2017 | 4 | 8 |
| 2018 | 4 | 5 |
| 2019 | 4 | 2 |
| 2020 | 5 | 5 |
| 2021 | 3 | 4 |
| 2022 | 4 | 0 |
| 2023 | 1 | 6 |
| 2024 | 3 | 0 |
| 2025 | 4 | 6 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Short-circuit current control in power systems11 Aug 2026US 12,706,454 B2Saudi Arabian Oil Company
- Circuit arrangement for current limiting and electrical system30 Dec 2025US 12,512,666 B2Robert Bosch GmbH
- Systems, methods, apparatuses, and devices for controlling change in an impedance of a power supply circuit during a fault16 Dec 2025US 12,500,406 B2
- Current sinking arrangement20 May 2025US 12,308,637 B2Gridon Ltd.
- Power distribution over ethernet connection8 Apr 2025US 12,273,209 B2Space Exploration Technologies Corp.
- Substation with power voltage transformer connected through circuit device to high or extra high voltage transmission line26 Feb 2026US 2026/0058461 A1Siemens Energy Global GmbH & Co. KG
- Power distribution over ethernet connection13 Nov 2025US 2025/0350483 A1Space Exploration Technologies Corp.
- System including an ideal diode circuit for negative transient protection6 Nov 2025US 2025/0343409 A1Connaught Electronics Ltd.
- Systems, methods, apparatuses, and devices for controlling change in an impedance of a power supply circuit during a fault31 Jul 2025US 2025/0246899 A1
- Overcurrent Limiting Unit and Detection Unit and Method for Manufacturing and Method for Operating the Same10 Apr 2025US 2025/0118955 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
Most cited
By later US patents
- Circuit for diverting surges and transient impulses28US 7,082,022 B2PolyPhaser Corporation · 2006
- Conversion and control of electrical energy by electromagnetic induction25US 4,020,440 A1977
- Permanent magnet surge arrestor for DC power converter24US 4,723,188 AGeneral Electric Company · 1988
- Current harvesting transformer with protection from high currents16US 9,984,818 B2Sentient Energy, Inc. · 2018
- Saturable reactor current limiter15US 4,031,457 AThe Charles Stark Draper Laboratory, Inc. · 1977