E21C 50/00
Obtaining minerals from underwater, not otherwise provided for
Official title: Obtaining minerals from underwater, not otherwise provided for (suction dredgers or component parts thereof E02F3/88; equipment for conveying or separating excavated material E02F7/00; dippers G01N1/12)
E21C50/00 (Obtaining minerals from underwater, not otherwise provided for) appears on 152 US grants and 116 published applications in this corpus.
Search patents in E21C- Granted patents
- 152
- Published applications
- 116
- Assignees
- 104
- Inventors
- 377
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 10 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 9 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 4 |
| 2010 | 3 | 0 |
| 2011 | 0 | 3 |
| 2012 | 0 | 4 |
| 2013 | 0 | 6 |
| 2014 | 2 | 7 |
| 2015 | 4 | 14 |
| 2016 | 9 | 11 |
| 2017 | 9 | 9 |
| 2018 | 9 | 5 |
| 2019 | 8 | 4 |
| 2020 | 4 | 5 |
| 2021 | 6 | 4 |
| 2022 | 3 | 8 |
| 2023 | 3 | 9 |
| 2024 | 6 | 6 |
| 2025 | 3 | 3 |
| 2026 | 8 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Deep-sea mining vehicle25 Aug 2026US 12,716,355 B2Deeptech NV
- Apparatus for retrieving deep-sea nodules11 Aug 2026US 12,704,065 B2Impossible Metals Inc.
- Mining vehicle for cobalt-rich crust from the seabed11 Aug 2026US 12,704,066 B2Qingdao University of Science and Technology
- Methods for suppression of seabed mining plumes21 Apr 2026US 12,606,982 B2Deep Reach Technology, Inc.
- Apparatus for removing material from a floor of a body of water10 Mar 2026US 12,571,181 B2Soil Machine Dynamics Limited
- Apparatus for removing nodular material from the seabed and for separating said material30 Jul 2026US 2026/0218486 A1Soil Machine Dynamics Limited
- Placer recovery of particles and related systems, methods, and devices9 Jul 2026US 2026/0193984 A1
- Subsea mining2 Jul 2026US 2026/0185446 A1Mhwirth AS
- System and method for underwater payload estimation in dragline bucket30 Apr 2026US 2026/0117486 A1Caterpillar Global Mining LLC
- Seafloor Harvesting System2 Apr 2026US 2026/0092524 A1
Most cited
By later US patents
- Ocean mining system and process74US 4,232,903 ALockheed Missiles & Space Company, Inc. · 1980
- System and method for hydrate recovery60US 5,950,732 ASyntroleum Corporation · 1999
- Method of extraction of nodular sediments or the like from the sea floor and an installation for carrying29US 3,971,593 ACommissariat A L' Energie Atomique · 1976
- Undersea geophysical exploration29US 4,075,599 AThe International Nickel Company, Inc. · 1978
- Unbonded flexible pipe for transporting an abrasive material, associated method and associated use28US 10,190,722 B2Technip France · 2019