H02H 3/305
Involving current comparison
Official title: {involving current comparison}
H02H3/305 (Involving current comparison) appears on 47 US grants and 48 published applications in this corpus.
Search patents in H02H- Granted patents
- 47
- Published applications
- 48
- Assignees
- 43
- Inventors
- 123
- Latest grant
- 10 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 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 | 1 |
| 2011 | 0 | 4 |
| 2012 | 1 | 4 |
| 2013 | 3 | 7 |
| 2014 | 5 | 5 |
| 2015 | 7 | 2 |
| 2016 | 3 | 3 |
| 2017 | 4 | 4 |
| 2018 | 0 | 5 |
| 2019 | 4 | 6 |
| 2020 | 2 | 1 |
| 2021 | 6 | 2 |
| 2022 | 4 | 0 |
| 2023 | 1 | 2 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Integrated circuit-based nano-relay10 Sep 2024US 12,088,082 B2Digital Grid Research Institute, China Southern Power Grid
- Squib diver circuit for a deployable restraint including an integrated circuit and a voltage regulator20 Jun 2023US 11,682,893 B2Veoneer US, Inc.
- Charging protection method, terminal, and charger18 Oct 2022US 11,476,684 B2Huawei Technologies Co., Ltd.
- Household appliance and apparatus and method for detecting arc fault in the same13 Sep 2022US 11,444,443 B2Gd Midea Air-Conditioning Equipment Co., Ltd.
- Current differential relay apparatus7 Jun 2022US 11,355,919 B2Mitsubishi Electric Corporation
- Integrated circuit-based nano-relay30 May 2024US 2024/0178648 A1Digital Grid Res. Inst., China Southern Pwr. Grid
- Main switch of an electrical system of a vehicle28 Sep 2023US 2023/0303018 A1Ellenberger & Poensgen GmbH
- Time alignment method of differential protection device, differential protection device and differential protection system3 Aug 2023US 2023/0243875 A1Schneider Electric Industries SAS
- Voltage regulator4 Nov 2021US 2021/0344189 A1Veoneer US, Inc.
- Current differential relay apparatus2 Sep 2021US 2021/0273443 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Multi-terminal protective relay system22US 4,322,768 AMitsubishi Denki Kabushiki Kaisha · 1982
- Protective relay apparatus12US 4,408,246 AWestinghouse Electric Corp. · 1983
- Apparatus for monitoring two electric quantities by combining three consecutive samples of each quantity8US 4,075,697 AMeidensha Corporation · 1978
- Differential relay for protecting an electrical power transmission system8US 4,760,487 AGeneral Electric Company · 1988
- Apparatus for monitoring two electric quantities by combining three consecutive samples of each quantity7US 4,006,348 AMeidensha Corporation · 1977