H02H 7/0455
Taking into account saturation of current transformers
Official title: {taking into account saturation of current transformers}
H02H7/0455 (Taking into account saturation of current transformers) appears on 26 US grants and 23 published applications in this corpus.
Search patents in H02H- Granted patents
- 26
- Published applications
- 23
- Assignees
- 18
- Inventors
- 67
- Latest grant
- 4 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 2 | 2 |
| 2014 | 0 | 1 |
| 2015 | 2 | 2 |
| 2016 | 1 | 0 |
| 2017 | 1 | 3 |
| 2018 | 0 | 1 |
| 2019 | 2 | 2 |
| 2020 | 3 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 0 |
| 2023 | 2 | 2 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Differential protection using instrument transformer signal transducers4 Mar 2025US 12,244,135 B2Schweitzer Engineering Laboratories, Inc.
- System and method for restraining differential bias19 Nov 2024US 12,149,063 B2Schneider Electric (Australia) PTY LTD
- Power grid protection via transformer neutral blocking systems and triggered phase disconnection14 May 2024US 11,984,720 B2TechHold, LLC
- Power converter and control method thereof3 Oct 2023US 11,777,417 B2Delta Electronics, Inc.
- Power converter and control method thereof28 Feb 2023US 11,594,976 B2Delta Electronics, Inc.
- System and method for restraining differential bias28 Mar 2024US 2024/0106225 A1Schneider Electric (Australia) PTY LTD
- Differential protection using instrument transformer signal transducers1 Jun 2023US 2023/0170685 A1Schweitzer Engineering Laboratories, Inc.
- Power converter and control method thereof18 May 2023US 2023/0155517 A1Delta Electronics, Inc.
- Power converter and control method thereof9 Dec 2021US 2021/0384840 A1Delta Electronics, Inc.
- Power grid protection via transformer neutral blocking systems and triggered phase disconnection11 Mar 2021US 2021/0075213 A1TechHold, LLC
Most cited
By later US patents
- Electrical protection system30US 6,940,702 B2McGraw-Edison Company · 2005
- Microprocessor-based digital protective relay for power transformers20US 5,172,329 A1992
- Sensing and control electronics for a power grid protection system16US 8,537,508 B2Emprimus, LLC · 2013
- Magnetizing inrush restraint method and relay for protection of power transformers14US 6,483,680 B1General Electric Company · 2002
- Transformer differential relay with speed-up apparatus12US 4,704,653 AWestinghouse Electric Corp. · 1987