H02H 3/283
And taking into account saturation of current transformers
Official title: {and taking into account saturation of current transformers}
H02H3/283 (And taking into account saturation of current transformers) appears on 36 US grants and 29 published applications in this corpus.
Search patents in H02H- Granted patents
- 36
- Published applications
- 29
- Assignees
- 29
- Inventors
- 95
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 4 | 2 |
| 2003 | 1 | 2 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 3 | 3 |
| 2015 | 2 | 2 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 3 |
| 2019 | 3 | 1 |
| 2020 | 3 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 3 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Current transformer sensing with saturation protection25 Aug 2026US 12,719,260 B2Hamilton Sundstrand Corporation
- High-impedance differential protection using a diversity of signals16 Sep 2025US 12,418,168 B2Schweitzer Engineering Laboratories, Inc.
- 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
- Electric power system differential protection with DC compensation11 Oct 2022US 11,469,588 B2Schweitzer Engineering Laboratories, Inc.
- A fault discrimination and a current transformer saturation detection for a differential protection system25 Jun 2026US 2026/0180308 A1Hitachi Energy Ltd
- Current transformer sensing with saturation protection18 Dec 2025US 2025/0385510 A1Hamilton Sundstrand Corporation
- Method and apparatus for differential protection of protection section, relay protection device6 Feb 2025US 2025/0047092 A1Schneider Electric Industries SAS
- High-impedance differential protection using a diversity of signals25 Jul 2024US 2024/0250518 A1Schweitzer Engineering Laboratories, Inc.
- High-impedance bus differential protection20 Jun 2024US 2024/0204513 A1Schweitzer Engineering Laboratories, Inc.
Most cited
By later US patents
- Restraint-type differential relay72US 6,341,055 B12002
- System for power transformer differential protection58US 6,356,421 B1Schweitzer Engineering Labs., Inc. · 2002
- System, apparatus and method for compensating the sensitivity of a sequence element in a line current differential relay in a power system46US 7,660,088 B2Schweitzer Engineering Laboratories, Inc. · 2010
- Differential protective relay for electrical buses with improved immunity to saturation of current transformers40US 6,442,010 B1General Electric Company · 2002
- Bus differential relay33US 4,623,949 AWestinghouse Electric Corp. · 1986