H02H 7/08
Emergency protective circuit arrangements specially adapted for specific types of electric machines
Official title: for dynamo-electric motors
H02H7/08 (Emergency protective circuit arrangements specially adapted for specific types of electric machines) appears on 2,217 US grants and 1,511 published applications in this corpus.
Search patents in H02H- Granted patents
- 2,217
- Published applications
- 1,511
- Assignees
- 971
- Inventors
- 4,079
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 41 | 0 |
| 1978 | 19 | 0 |
| 1979 | 14 | 0 |
| 1980 | 22 | 0 |
| 1981 | 28 | 0 |
| 1982 | 22 | 0 |
| 1983 | 25 | 0 |
| 1984 | 23 | 0 |
| 1985 | 30 | 0 |
| 1986 | 17 | 0 |
| 1987 | 39 | 0 |
| 1988 | 24 | 0 |
| 1989 | 37 | 0 |
| 1990 | 31 | 0 |
| 1991 | 29 | 0 |
| 1992 | 22 | 0 |
| 1993 | 28 | 0 |
| 1994 | 26 | 0 |
| 1995 | 34 | 0 |
| 1996 | 69 | 0 |
| 1997 | 55 | 0 |
| 1998 | 63 | 0 |
| 1999 | 53 | 0 |
| 2000 | 55 | 0 |
| 2001 | 60 | 8 |
| 2002 | 41 | 46 |
| 2003 | 53 | 53 |
| 2004 | 52 | 66 |
| 2005 | 41 | 53 |
| 2006 | 46 | 46 |
| 2007 | 47 | 76 |
| 2008 | 50 | 79 |
| 2009 | 60 | 53 |
| 2010 | 53 | 51 |
| 2011 | 42 | 35 |
| 2012 | 34 | 36 |
| 2013 | 42 | 58 |
| 2014 | 46 | 78 |
| 2015 | 54 | 79 |
| 2016 | 62 | 70 |
| 2017 | 78 | 63 |
| 2018 | 50 | 57 |
| 2019 | 74 | 74 |
| 2020 | 69 | 95 |
| 2021 | 83 | 65 |
| 2022 | 53 | 81 |
| 2023 | 64 | 49 |
| 2024 | 59 | 52 |
| 2025 | 47 | 43 |
| 2026 | 28 | 45 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02H 7/085Against excessive load975
- H02H 7/0833For electric motors with control arrangements620
- H02H 7/093Against increase beyond, or decrease below, a predetermined level of rotational speed213
- H02H 7/09Against over-voltage188
- H02H 7/0822Integrated protection, motor control centres107
- H02H 7/0816Concerning the starting sequence75
- H02H 7/0811For dc motors47
- H02H 7/0805For synchronous motors39
All 10 subgroupsShow fewer
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Most cited
By later US patents
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