H01F 27/04
Leading of conductors or axles through casings
Official title: Leading of conductors or axles through casings, e.g. for tap-changing arrangements
H01F27/04 (Leading of conductors or axles through casings) appears on 305 US grants and 286 published applications in this corpus.
Search patents in H01F- Granted patents
- 305
- Published applications
- 286
- Assignees
- 201
- Inventors
- 772
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 0 |
| 2002 | 6 | 6 |
| 2003 | 3 | 6 |
| 2004 | 10 | 4 |
| 2005 | 7 | 18 |
| 2006 | 13 | 10 |
| 2007 | 8 | 11 |
| 2008 | 3 | 10 |
| 2009 | 6 | 17 |
| 2010 | 10 | 10 |
| 2011 | 13 | 4 |
| 2012 | 8 | 13 |
| 2013 | 9 | 10 |
| 2014 | 10 | 5 |
| 2015 | 4 | 13 |
| 2016 | 8 | 18 |
| 2017 | 10 | 15 |
| 2018 | 12 | 14 |
| 2019 | 20 | 15 |
| 2020 | 7 | 16 |
| 2021 | 10 | 17 |
| 2022 | 12 | 17 |
| 2023 | 15 | 11 |
| 2024 | 17 | 13 |
| 2025 | 5 | 7 |
| 2026 | 12 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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