E21C 41/31
For oil-bearing deposits
Official title: {for oil-bearing deposits}
E21C41/31 (For oil-bearing deposits) appears on 22 US grants and 18 published applications in this corpus.
Search patents in E21C- Granted patents
- 22
- Published applications
- 18
- Assignees
- 13
- Inventors
- 58
- Latest grant
- 9 Mar 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 3 |
| 2011 | 2 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Composition for steam extraction of bitumen9 Mar 2021US 10,941,347 B2Dow Global Technologies LLC
- Controlling bitumen recovery from an oil sands ore body by using a predictive ore processability model in producing a blended ore feedstock14 Jul 2020US 10,712,330 B2Syncrude Canada Ltd.
- Enhanced steam extraction of bitumen from oil sands28 Apr 2020US 10,633,593 B2Dow Global Technologies LLC
- Mining machine control system, mining machine, mining machine management system, and mining machine management method12 Feb 2019US 10,202,116 B2Komatsu Ltd.
- Floating wicks for slurry consolidation21 Mar 2017US 9,598,299 B2ExxonMobil Upstream Research Company
- Oil sands truck-and-shovel mining operation with performance monitoring and control20 Mar 2025US 2025/0092784 A1SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project as such owners exist now & in
- Method of utilizing dispersant chemical combined with nanobubbles and agitation for accelerated dewatering and oil stripping of tailings23 Mar 2023US 2023/0091750 A1Crosswind Resources Inc.
- Controlling bitumen recovery from an oil sands ore body by using a predictive ore processability model in producing a blended ore feedstock30 Jan 2020US 2020/0033316 A1SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project, as such owners exist now and
- Composition for steam extraction of bitumen24 Oct 2019US 2019/0322944 A1Dow Global Technologies LLC
- Enhanced steam extraction of bitumen from oil sands25 Apr 2019US 2019/0119577 A1Dow Global Technologies LLC
Most cited
By later US patents