E21B 7/008
Drilling ice or a formation covered by ice
Official title: {Drilling ice or a formation covered by ice}
E21B7/008 (Drilling ice or a formation covered by ice) appears on 72 US grants and 48 published applications in this corpus.
Search patents in E21B- Granted patents
- 72
- Published applications
- 48
- Assignees
- 36
- Inventors
- 135
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 3 |
| 2005 | 0 | 2 |
| 2006 | 2 | 3 |
| 2007 | 0 | 5 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 2 | 0 |
| 2012 | 0 | 5 |
| 2013 | 2 | 1 |
| 2014 | 2 | 1 |
| 2015 | 2 | 2 |
| 2016 | 3 | 2 |
| 2017 | 3 | 3 |
| 2018 | 1 | 4 |
| 2019 | 2 | 2 |
| 2020 | 1 | 1 |
| 2021 | 1 | 2 |
| 2022 | 2 | 1 |
| 2023 | 1 | 3 |
| 2024 | 0 | 0 |
| 2025 | 3 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water-jet ice core drilling rig16 Jun 2026US 12,655,703 B2Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences
- Integrated steam drill12 May 2026US 12,624,597 B1Nothwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences
- Rapid assembly and automatic sampling drilling tool for frozen soil layer exploration7 Oct 2025US 12,435,588 B2Powerchina Huadong Engineering Corporation Limited
- Receiver hitch-mounted ice drill device20 May 2025US 12,305,510 B2
- Cylindrical ice auger bit for faster and easier hole drilling25 Feb 2025US 12,234,726 B1
- Water-jet ice core drilling rig11 Jun 2026US 2026/0160141 A1Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences
- Rapid assembly and automatic sampling drilling tool for frozen soil layer exploration14 Aug 2025US 2025/0257624 A1Powerchina Huadong Engineering Corporation Limited
- Receiver Hitch-Mounted Ice Drill Device5 Oct 2023US 2023/0313614 A1
- Ice drill handle attachment assembly and ice drill containing said assembly27 Apr 2023US 2023/0127096 A1
- Direct High Voltage Water Heater System9 Mar 2023US 2023/0073890 A1Stone Aerospace, Inc.
Most cited
By later US patents
- Wafer carrier74US 5,788,082 AFluoroware, Inc. · 1998
- Power winch-ice auger conversion apparatus31US 5,330,014 A1994
- Method and apparatus for conducting subaqueous operations in ice conditions23US 4,068,487 AThe Offshore Company · 1978
- Ice auger cutting head20US 6,502,649 B1StrikeMaster Corporation · 2003
- Auger assembly20US 7,946,355 B12011