H02H 3/48
Responsive to loss of synchronism
Official title: responsive to loss of synchronism
H02H3/48 (Responsive to loss of synchronism) appears on 19 US grants and 13 published applications in this corpus.
Search patents in H02H- Granted patents
- 19
- Published applications
- 13
- Assignees
- 18
- Inventors
- 39
- Latest grant
- 26 Dec 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 2 |
| 2014 | 0 | 2 |
| 2015 | 2 | 0 |
| 2016 | 2 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Uninterruptible power supply device26 Dec 2023US 11,855,483 B2Nissin Electric Co., Ltd.
- Method and device for detection of sub-synchronous oscillations in a power system8 Nov 2022US 11,495,969 B2Siemens Aktiengesellschaft
- Synchronous power-on/off control method and synchronous power-on/off controller11 Aug 2020US 10,742,041 B2Kawasaki Jukogyo Kabushiki Kaisha
- System for detecting a falling electric power conductor and related methods11 Dec 2018US 10,153,635 B2San Diego Gas & Electric Company
- Subsynchronous oscillation relay31 Oct 2017US 9,806,690 B1AEP Transmission Holding Company, LLC
- Power sensing via quantum phenomenon detection30 Jan 2025US 2025/0035676 A1Wells Fargo Bank, N. A.
- Uninterruptible power supply device21 Jul 2022US 2022/0231536 A1Nissin Electric Co., Ltd.
- Method and device for detection of sub-synchronous oscillations in a power system26 Aug 2021US 2021/0265840 A1Siemens Aktiengesellschaft
- Synchronous power-on/off control method and synchronous power-on/off controller28 Mar 2019US 2019/0097428 A1Kawasaki Jukogyo Kabushiki Kaisha
- Electrical system protection strategy using slip frequency calculation15 Nov 2018US 2018/0331533 A1
Most cited
By later US patents
- Protective apparatus, methods of operating same and phase window adjusting apparatus for use therein39US 4,757,416 ABasler Electric Company · 1988
- Reclosing relay with nonvolatile memory of operations28US 4,845,594 ABasler Electric Company · 1989
- System for detecting a falling electric power conductor and related methods18US 9,413,156 B2San Diego Gas & Electric Company · 2016
- Synchronism check relay10US 4,538,197 AGeneral Electric Company · 1985
- Circuit for protection against slow circuit breaker closure during synchronization of a generator and an associated electrical system10US 6,324,039 B1Schweitzer Engineering Laboratories, Inc. · 2001