H02H 3/16
Responsive to fault current to earth, frame or mass
Official title: responsive to fault current to earth, frame or mass (with balanced or differential arrangement H02H3/26 {; monitoring earth connection H02H5/105})
H02H3/16 (Responsive to fault current to earth, frame or mass) appears on 1,033 US grants and 1,077 published applications in this corpus.
Search patents in H02H- Granted patents
- 1,033
- Published applications
- 1,077
- Assignees
- 488
- Inventors
- 1,941
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 11 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 10 | 0 |
| 2001 | 3 | 1 |
| 2002 | 6 | 0 |
| 2003 | 7 | 6 |
| 2004 | 3 | 5 |
| 2005 | 2 | 7 |
| 2006 | 6 | 8 |
| 2007 | 8 | 8 |
| 2008 | 1 | 9 |
| 2009 | 5 | 14 |
| 2010 | 11 | 9 |
| 2011 | 13 | 16 |
| 2012 | 7 | 32 |
| 2013 | 24 | 43 |
| 2014 | 31 | 68 |
| 2015 | 48 | 59 |
| 2016 | 44 | 67 |
| 2017 | 59 | 88 |
| 2018 | 63 | 85 |
| 2019 | 81 | 83 |
| 2020 | 81 | 72 |
| 2021 | 95 | 68 |
| 2022 | 76 | 74 |
| 2023 | 68 | 91 |
| 2024 | 87 | 66 |
| 2025 | 54 | 51 |
| 2026 | 40 | 47 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Self-test auto monitor ground fault circuit interrupter (GFCI) with power denial6 Oct 2026US 12,754,232 B2Hubbell Incorporated
- Short-circuit protection circuit, semiconductor device, and short-circuit protection method29 Sep 2026US 12,749,887 B2Mitsubishi Heavy Industries, Ltd.
- Plug-type electric discharge detection unit and electric discharge detection system22 Sep 2026US 12,742,808 B2Nitto Kogyo Co., Ltd.
- Adaptive electrical power distribution panel22 Sep 2026US 12,744,455 B2Koolbridge Energy, Inc.
- System for protecting an electrical circuit for an aircraft25 Aug 2026US 12,716,959 B2Airbus Operations GmbH
- System and method for protecting against ground faults on power rails1 Oct 2026US 2026/0302758 A1Caterpillar Inc.
- Ground Fault Circuit Interrupter with Solid State Relay-Controlled Electromagnetic Contactor and Self-Test End of Life (STEOL) Circuits for High-Current Applications24 Sep 2026US 2026/0291206 A1Tower Manufacturing Corporation
- Vehicle control device10 Sep 2026US 2026/0269597 A1Denso Corporation
- Circuit protection scheme for electrical power systems20 Aug 2026US 2026/0246258 A1Tesla, Inc.
- Systems and method for fault protection13 Aug 2026US 2026/0237993 A1GE Aviation Systems LLC
Most cited
By later US patents
- High-frequency surgical instrument357US 4,788,977 AErbe Elektromedizin GmbH · 1988
- Method of monitoring ESC levels and protective devices utilizing the method242US 6,762,917 B1NOVX Corporation · 2004
- Safety monitoring circuit for electrosurgical unit224US 4,231,372 AValleylab, Inc. · 1980
- Ground fault protecting apparatus and method for solar power generation and solar power generation apparatus using the apparatus and method213US 6,101,073 ACanon Kabushiki Kaisha · 2000
- Electrosurgical safety circuit151US 4,200,105 ADentsply Research & Development Corp. · 1980