H01H 71/1081
Modifications for selective or back-up protection
Official title: {Modifications for selective or back-up protection; Correlation between feeder and branch circuit breaker (circuits H02H3/06, H02H7/26)}
H01H71/1081 (Modifications for selective or back-up protection) appears on 48 US grants and 35 published applications in this corpus.
Search patents in H01H- Granted patents
- 48
- Published applications
- 35
- Assignees
- 36
- Inventors
- 133
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 2 |
| 2016 | 0 | 1 |
| 2017 | 4 | 2 |
| 2018 | 1 | 1 |
| 2019 | 2 | 3 |
| 2020 | 4 | 4 |
| 2021 | 4 | 5 |
| 2022 | 3 | 2 |
| 2023 | 3 | 1 |
| 2024 | 0 | 0 |
| 2025 | 2 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fault current limiting solid-state switching device26 May 2026US 12,640,557 B2
- Fault detection and automatic switching of relays5 Aug 2025US 12,381,557 B1Forsyth Robotics LLC
- Integrated electrical panel25 Feb 2025US 12,237,689 B2Span.IO, Inc.
- Selective coordination of solid-state circuit breakers and mechanical circuit breakers in electrical distribution systems7 Nov 2023US 11,810,744 B2Atom Power, Inc.
- Integrated electrical panel26 Sep 2023US 11,770,006 B2Span.IO, Inc.
- Integrated electrical panel23 Jul 2026US 2026/0213501 A1Span.IO, Inc.
- Energy storage valve submodule, energy storage valve, and energy storage station19 Mar 2026US 2026/0081468 A1Contemporary Amperex Future Energy Research Institute (Shanghai) Limited
- Fault detection and automatic switching of relays30 Oct 2025US 2025/0337413 A1Forsyth Robotics LLC
- Fault current limiting solid-state switching device7 Aug 2025US 2025/0253648 A1ABB Schweiz AG
- Integrated electrical panel7 Dec 2023US 2023/0396069 A1Span.IO, Inc.
Most cited
By later US patents
- Molded case circuit breaker with contact bridge slowed down at the end of repulsion travel106US 5,310,971 AMerlin Gerin · 1994
- Circuit breakers with PTC (Positive Temperature Coefficient resistivity38US 5,886,860 ASquare D Company · 1999
- Selective safety device for the protection of a power distribution system29US 4,354,215 AHazemeijer B. V. · 1982
- Hybrid air-gap / solid-state circuit breaker27US 10,541,530 B2Atom Power, Inc. · 2020
- Circuit breaker20US 4,417,222 ABrown Boveri Corporation · 1983