H02H 3/387
Using phase-sequence analysing arrangements
Official title: {using phase-sequence analysing arrangements}
H02H3/387 (Using phase-sequence analysing arrangements) appears on 11 US grants and 4 published applications in this corpus.
Search patents in H02H- Granted patents
- 11
- Published applications
- 4
- Assignees
- 7
- Inventors
- 21
- Latest grant
- 23 May 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 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 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Effective feature set-based high impedance fault detection23 May 2023US 11,656,263 B2Arizona Board of Regents on behalf of Arizona State University
- Network protector control for spot network fed from feeder sources having voltage differences9 Oct 2018US 10,096,991 B2Eaton Intelligent Power Limited
- Relay device and corresponding method6 Oct 2009US 7,599,161 B2General Electric Company
- Remote protection of three phase distribution transformers17 May 1988US 4,745,512 AThe Electricity Council
- Negative sequence network having a frequency compensated filter8 May 1984US 4,447,843 AGeneral Electric Company
- A method of detecting a fault in a protected line in a power transmission system9 Apr 2026US 2026/0098888 A1Hitachi Energy Ltd
- Effective feature set-based high impedance fault detection17 Dec 2020US 2020/0393505 A1Arizona Board of Regents on behalf of Arizona State University
- Network protector control for spot network fed from feeder sources having voltage differences14 Dec 2017US 2017/0358919 A1Cooper Technologies Company
- Relay device and corresponding method3 Jul 2008US 2008/0158753 A1General Electric Company
Most cited
By later US patents
- Distance relay for electric power transmission lines47US 4,148,087 A1979
- Remote protection of three phase distribution transformers32US 4,745,512 AThe Electricity Council · 1988
- Protective relaying apparatus30US 4,297,740 AWestinghouse Electric Corp. · 1981
- Network protector relay27US 3,947,728 AWestinghouse Electric Corp. · 1976
- Protective relay circuit for interphase faults20US 4,091,433 AGeneral Electric Company · 1978