B66C 23/205
For use on top of roofs
Official title: {for use on top of roofs}
B66C23/205 (For use on top of roofs) appears on 26 US grants and 35 published applications in this corpus.
Search patents in B66C- Granted patents
- 26
- Published applications
- 35
- Assignees
- 17
- Inventors
- 61
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 1 |
| 2014 | 0 | 3 |
| 2015 | 0 | 1 |
| 2016 | 2 | 3 |
| 2017 | 2 | 1 |
| 2018 | 1 | 4 |
| 2019 | 2 | 3 |
| 2020 | 2 | 3 |
| 2021 | 4 | 3 |
| 2022 | 2 | 2 |
| 2023 | 0 | 1 |
| 2024 | 0 | 4 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Extensible and collapsible portable derrick35US 3,978,989 A1976
- Foldable boom for mounting on a roof of a building34US 5,341,898 A1994
- Portable hoist system27US 5,622,237 ARollgliss AG · 1997
- Portable roof winch17US 4,004,778 A1977
- Self-climbing hoist, deck and scaffold platform system15US 8,584,801 B22013