H02J 9/00
Circuit arrangements for emergency or stand-by power supply
Official title: Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
H02J9/00 (Circuit arrangements for emergency or stand-by power supply) appears on 7,476 US grants and 7,736 published applications in this corpus.
Search patents in H02J- Granted patents
- 7,476
- Published applications
- 7,736
- Assignees
- 2,834
- Inventors
- 14,021
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 18 | 0 |
| 1978 | 19 | 0 |
| 1979 | 15 | 0 |
| 1980 | 22 | 0 |
| 1981 | 16 | 0 |
| 1982 | 26 | 0 |
| 1983 | 29 | 0 |
| 1984 | 20 | 0 |
| 1985 | 18 | 0 |
| 1986 | 17 | 0 |
| 1987 | 53 | 0 |
| 1988 | 36 | 0 |
| 1989 | 41 | 0 |
| 1990 | 24 | 0 |
| 1991 | 35 | 0 |
| 1992 | 47 | 0 |
| 1993 | 59 | 0 |
| 1994 | 60 | 0 |
| 1995 | 57 | 0 |
| 1996 | 69 | 0 |
| 1997 | 84 | 0 |
| 1998 | 120 | 0 |
| 1999 | 97 | 0 |
| 2000 | 100 | 0 |
| 2001 | 100 | 31 |
| 2002 | 109 | 102 |
| 2003 | 100 | 123 |
| 2004 | 104 | 172 |
| 2005 | 77 | 140 |
| 2006 | 108 | 145 |
| 2007 | 90 | 134 |
| 2008 | 108 | 170 |
| 2009 | 121 | 232 |
| 2010 | 146 | 225 |
| 2011 | 158 | 289 |
| 2012 | 177 | 294 |
| 2013 | 157 | 336 |
| 2014 | 201 | 336 |
| 2015 | 258 | 414 |
| 2016 | 318 | 411 |
| 2017 | 415 | 453 |
| 2018 | 426 | 419 |
| 2019 | 478 | 461 |
| 2020 | 427 | 440 |
| 2021 | 477 | 464 |
| 2022 | 446 | 441 |
| 2023 | 348 | 416 |
| 2024 | 398 | 386 |
| 2025 | 387 | 411 |
| 2026 | 245 | 291 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02J 9/04In which the distribution system is disconnected from the normal source and6,061
- H02J 9/005Circuit arrangements for emergency or stand-by power supply: using a power saving909
- H02J 9/02In which an auxiliary distribution system and its associated lamps are brought244
- H02J 9/002In which a reserve is maintained in an energy source by disconnecting209
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