E21B 41/10
Guide posts
Official title: Guide posts, e.g. releasable; Attaching guide lines to underwater guide bases
E21B41/10 (Guide posts) appears on 127 US grants and 41 published applications in this corpus.
Search patents in E21B- Granted patents
- 127
- Published applications
- 41
- Assignees
- 77
- Inventors
- 195
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 8 | 0 |
| 1983 | 11 | 0 |
| 1984 | 13 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 3 |
| 2014 | 0 | 3 |
| 2015 | 3 | 2 |
| 2016 | 4 | 2 |
| 2017 | 1 | 4 |
| 2018 | 2 | 0 |
| 2019 | 0 | 4 |
| 2020 | 1 | 4 |
| 2021 | 2 | 2 |
| 2022 | 4 | 5 |
| 2023 | 5 | 2 |
| 2024 | 4 | 2 |
| 2025 | 4 | 5 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Subsea termination assembly29 Sep 2026US 12,747,652 B2Onesubsea, LLC
- Electrolytic pumping system25 Aug 2026US 12,716,332 B2
- Guide rod14 Jul 2026US 12,680,423 B2TechnipFMC Norge AS
- Foundation modularization24 Jun 2025US 12,338,595 B2Equinor Energy AS
- Hands-free gooseneck and hands-free gooseneck flow spool3 Jun 2025US 12,320,208 B2Grant Prideco, L.P.
- Electrolytic pumping system11 Jun 2026US 2026/0160156 A1
- Guide rod20 Nov 2025US 2025/0354462 A1TechnipFMC Norge AS
- System and method for landing retrievable process module11 Sep 2025US 2025/0283393 A1OneSubsea IP UK Limited
- Subsea termination assembly19 Jun 2025US 2025/0198261 A1Onesubsea, LLC
- Subsea foundation9 Jan 2025US 2025/0012035 A1Equinor Energy AS
Most cited
By later US patents
- Emergency well-control vessel110US 4,336,843 AOdeco Engineers Inc. · 1982
- Retrievable exploration guide base/completion guide base system61US 4,611,661 AVetco Offshore Industries, Inc. · 1986
- In situ method and apparatus for inspecting and repairing subsea wellheads58US 4,401,164 A1983
- Releasable guide post mount and method for recovering guide posts by remote operations54US 4,439,068 AArmco Inc. · 1984
- Method and system for attaching and removing equipment from a wellhead53US 4,702,320 AOtis Engineering Corporation · 1987