E21B 3/045
Movably mounted on the drilling structure or platform
Official title: {movably mounted on the drilling structure or platform (derricks adapted to be moved on their substructure E21B15/003)}
E21B3/045 (Movably mounted on the drilling structure or platform) appears on 29 US grants and 26 published applications in this corpus.
Search patents in E21B- Granted patents
- 29
- Published applications
- 26
- Assignees
- 22
- Inventors
- 60
- Latest grant
- 4 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 2 | 2 |
| 2018 | 0 | 4 |
| 2019 | 3 | 5 |
| 2020 | 3 | 2 |
| 2021 | 4 | 1 |
| 2022 | 2 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 2 |
| 2025 | 1 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Portable downforce system and method4 Feb 2025US 12,215,553 B2Treeline Well Services LP
- High-capacity mast on a drilling rig19 Mar 2024US 11,933,118 B2Nabors Drilling Technologies USA, Inc.
- Assembly for moving excavation or drilling equipment and actuating method therefor4 Oct 2022US 11,459,826 B2Soilmec S.p.A.
- High-capacity mast on a drilling rig2 Aug 2022US 11,401,756 B2Nabors Drilling Technologies USA, Inc.
- Snubbing jack capable of reacting torque loads12 Oct 2021US 11,142,439 B2National Oilwell Varco, L. P.
- Rotary drives for civil engineering1 Oct 2026US 2026/0298029 A1BAUER Maschinen GmbH
- Drill drive arrangement, multiple rotary drive arrangement, and drilling rig for civil engineering, as well as method for operating a drill drive arrangement for civil engineering1 Oct 2026US 2026/0298030 A1BAUER Maschinen GmbH
- Connector assembly for use with microtunneling apparatus27 Nov 2025US 2025/0361777 A1
- Portable Downforce System and Method5 Jun 2025US 2025/0179884 A1Treeline Well Services LP
- Portable Downforce System and Method11 Jul 2024US 2024/0229579 A9Treeline Well Services LP
Most cited
By later US patents
- Combined drilling apparatus and method98US 6,158,516 ACudd Pressure Control, Inc. · 2000
- System for in-situ treatment of underwater contaminated material31US 5,127,765 AMillgard Environmental Corporation · 1992
- Mobile boring rig21US 5,269,107 AIng. Guenter Klemm Bohrtechnik GmbH · 1993
- Blow out preventer handling system15US 4,230,190 A1980
- Apparatus and method for processing soil in a subterranean earth situs15US 5,396,964 AHalliburton Company · 1995