B66C 23/34
Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
B66C23/34 (Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes) appears on 63 US grants and 64 published applications in this corpus.
Search patents in B66C- Granted patents
- 63
- Published applications
- 64
- Assignees
- 36
- Inventors
- 121
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 3 |
| 2004 | 0 | 2 |
| 2005 | 0 | 2 |
| 2006 | 2 | 0 |
| 2007 | 0 | 0 |
| 2008 | 2 | 2 |
| 2009 | 0 | 3 |
| 2010 | 1 | 4 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 3 | 3 |
| 2015 | 2 | 2 |
| 2016 | 0 | 2 |
| 2017 | 1 | 4 |
| 2018 | 1 | 1 |
| 2019 | 2 | 6 |
| 2020 | 7 | 3 |
| 2021 | 3 | 9 |
| 2022 | 3 | 8 |
| 2023 | 6 | 4 |
| 2024 | 7 | 0 |
| 2025 | 2 | 3 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Top-loading tower crane systems and associated methods21 Apr 2026US 12,606,423 B2National Oilwell Varco, L. P.
- Method of performing service work on a horizontal axis wind turbine21 Apr 2026US 12,607,168 B2Liftra IP Aps
- Structure unit17 Jun 2025US 12,331,770 B2Kobelco Construction Machinery Co., Ltd.
- Assembly method for crane25 Mar 2025US 12,258,243 B2Kobelco Construction Machinery Co., Ltd.
- Self-hoisting crane system and method of hoisting a self-hoisting crane15 Oct 2024US 12,116,249 B2Liftra IP Aps
- Load Block, Crane, Controller for a crane and method to operate a crane4 Sep 2025US 2025/0276874 A1
- Method of performing service work on a horizontal axis wind turbine24 Jul 2025US 2025/0237194 A1Liftra IP Aps
- A self-climbing tower crane20 Feb 2025US 2025/0059007 A1Itrec B V
- Top-loading tower crane systems and associated methods12 Oct 2023US 2023/0322529 A1National Oilwell Varco, L. P.
- Assembly method for crane29 Jun 2023US 2023/0202808 A1Kobelco Construction Machinery Co., Ltd.
Most cited
By later US patents
- Tower crane59US 3,939,988 AGeneral Crane Industries Limited · 1976
- Tower crane15US 3,944,081 AGeneral Crane Industries Limited · 1976
- Tower crane14US 3,938,670 AGeneral Crane Industries Limited · 1976
- Crane13US 4,053,060 A1977
- Tower crane with composite structure, self-assembling, with folding and telescoping tower, and arm made up of several sections9US 6,655,539 B2San Marco International S.r.l. · 2003