H02H 11/00
Emergency protective circuit arrangements for preventing the switching-on in case an undesired
Official title: Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
H02H11/00 (Emergency protective circuit arrangements for preventing the switching-on in case an undesired) appears on 903 US grants and 706 published applications in this corpus.
Search patents in H02H- Granted patents
- 903
- Published applications
- 706
- Assignees
- 574
- Inventors
- 1,875
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 19 | 0 |
| 1978 | 14 | 0 |
| 1979 | 10 | 0 |
| 1980 | 7 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 9 | 0 |
| 1984 | 14 | 0 |
| 1985 | 11 | 0 |
| 1986 | 3 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 11 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 14 | 0 |
| 1993 | 10 | 0 |
| 1994 | 5 | 0 |
| 1995 | 10 | 0 |
| 1996 | 19 | 0 |
| 1997 | 11 | 0 |
| 1998 | 22 | 0 |
| 1999 | 11 | 0 |
| 2000 | 24 | 0 |
| 2001 | 13 | 1 |
| 2002 | 12 | 17 |
| 2003 | 20 | 19 |
| 2004 | 13 | 18 |
| 2005 | 12 | 19 |
| 2006 | 22 | 19 |
| 2007 | 12 | 20 |
| 2008 | 15 | 19 |
| 2009 | 9 | 22 |
| 2010 | 18 | 19 |
| 2011 | 18 | 20 |
| 2012 | 17 | 19 |
| 2013 | 18 | 29 |
| 2014 | 23 | 36 |
| 2015 | 25 | 46 |
| 2016 | 36 | 44 |
| 2017 | 43 | 35 |
| 2018 | 46 | 40 |
| 2019 | 42 | 37 |
| 2020 | 26 | 40 |
| 2021 | 47 | 39 |
| 2022 | 38 | 23 |
| 2023 | 25 | 41 |
| 2024 | 33 | 31 |
| 2025 | 28 | 37 |
| 2026 | 19 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02H 11/002In case of inverted polarity or connection410
- H02H 11/006In case of too high or too low voltage138
- H02H 11/005In case of too low isolation resistance, too high load, short-circuit111
- H02H 11/001In case of incorrect or interrupted earth connection80
- H02H 11/004In case of incorrect phase sequence36
- H02H 11/008Preventing unsafe switching operations in substations31
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- Abnormal voltage protection circuit, signal transmission device comprising abnormal voltage protection circuit, electronic equipment comprising signal transmission device, and vehicle comprising electronic equipment30 Jul 2026US 2026/0221756 A1Rohm Co., Ltd.
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