B66C 23/28
Constructed to operate at successively higher levels
Official title: constructed to operate at successively higher levels
B66C23/28 (Constructed to operate at successively higher levels) appears on 104 US grants and 112 published applications in this corpus.
Search patents in B66C- Granted patents
- 104
- Published applications
- 112
- Assignees
- 67
- Inventors
- 249
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 6 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 2 | 4 |
| 2011 | 1 | 1 |
| 2012 | 3 | 2 |
| 2013 | 2 | 3 |
| 2014 | 1 | 9 |
| 2015 | 4 | 5 |
| 2016 | 7 | 2 |
| 2017 | 1 | 2 |
| 2018 | 0 | 7 |
| 2019 | 4 | 3 |
| 2020 | 8 | 7 |
| 2021 | 3 | 13 |
| 2022 | 2 | 11 |
| 2023 | 12 | 6 |
| 2024 | 10 | 15 |
| 2025 | 9 | 7 |
| 2026 | 3 | 2 |
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.
- Energy storage and delivery system with an elevator lift system and method of operating the same10 Mar 2026US 12,571,376 B2Energy Vault, Inc.
- Crane system and method for delivering crane from floor-to-floor of high-rise building under construction3 Feb 2026US 12,540,058 B2
- Self-hoisting crane and method of mounting and operating such crane23 Dec 2025US 12,503,343 B2Liftra IP Aps
- Crane assemblies and methods for erecting towers and wind turbines16 Dec 2025US 12,497,270 B2GE Vernova Infrastructure Technology LLC
- Combination crane and methods of use21 May 2026US 2026/0138853 A1Kraniac, Inc.
- Base assembly for a tower mounted crane9 Apr 2026US 2026/0097934 A1Liftra IP Aps
- Safety device for a lifting apparatus, lifting apparatus, lifting system and corresponding safety control method7 Aug 2025US 2025/0250805 A1
- Crane System and Method for Delivering Crane from Floor-to-Floor of High-Rise Building under Construction3 Jul 2025US 2025/0214812 A1Broadway Patents LLC
- Multi-tower linkage type aerial hoisting platform22 May 2025US 2025/0162845 A1Wuhan Construction Engineering Group Co., Ltd.
Most cited
By later US patents
- Hoisting device for big loads39US 6,523,320 B2Mammoet Europe B.V. · 2003
- Pumping tower support system and method of use29US 7,748,193 B2Putzmeister America, Inc. · 2010
- Energy storage system and method27US 10,837,429 B2Energy Vault, Inc. · 2020
- Energy storage system and method25US 10,683,851 B2Energy Vault, Inc. · 2020
- Method and apparatus for handling building materials and implements24US 6,226,955 B12001