E21B 49/025
Of underwater soil
Official title: {of underwater soil, e.g. with grab devices}
E21B49/025 (Of underwater soil) appears on 31 US grants and 29 published applications in this corpus.
Search patents in E21B- Granted patents
- 31
- Published applications
- 29
- Assignees
- 35
- Inventors
- 79
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 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 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 1 | 2 |
| 2015 | 1 | 2 |
| 2016 | 4 | 3 |
| 2017 | 2 | 1 |
| 2018 | 1 | 3 |
| 2019 | 1 | 2 |
| 2020 | 2 | 1 |
| 2021 | 2 | 2 |
| 2022 | 2 | 3 |
| 2023 | 1 | 2 |
| 2024 | 3 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system for determining shale rock maturity using microwaves3 Mar 2026US 12,565,823 B2Saudi Arabian Oil Company
- Geotechnical rig systems and methods22 Jul 2025US 12,366,126 B2Gregg Drilling, LLC
- Underwater drilling device and method for procuring drill cores of a bed of a body of water14 May 2024US 11,982,145 B2BAUER Maschinen GmbH
- Geotechnical rig systems and methods30 Apr 2024US 11,970,916 B2Gregg Drilling, LLC
- Device, system and method for collecting samples from a bed of a waterbody26 Mar 2024US 11,939,831 B2Fnv IP B.V.
- Geotechnical rig systems and methods20 Nov 2025US 2025/0354443 A1Gregg Drilling, LLC
- Geotechnical rig systems and methods1 Aug 2024US 2024/0254844 A1Gregg Drilling, LLC
- Method and system for determining shale rock maturity using microwaves7 Sep 2023US 2023/0279739 A1Aramco Services Company
- Geotechnical rig systems and methods20 Jul 2023US 2023/0228160 A1Gregg Drilling, LLC
- Geotechnical rig systems and methods10 Feb 2022US 2022/0042894 A1Gregg Drilling, LLC
Most cited
By later US patents
- Releasable latching apparatus for a benthic grab12US 3,949,497 ATrippensee Corporation · 1976
- Sea floor sampling device and method7US 8,994,527 B22015
- Underwater sampler6US 4,019,380 ABenthos, Inc. · 1977
- Free-fall grab5US 3,996,678 APreussag Aktiengesellschaft · 1976
- Apparatus for collecting marine deposits5US 8,191,436 B2Korea Institute of Geoscience and Mineral Resouces (Kigam) · 2012