E21B 10/61
Characterised by the nozzle structure
Official title: characterised by the nozzle structure
E21B10/61 (Characterised by the nozzle structure) appears on 179 US grants and 137 published applications in this corpus.
Search patents in E21B- Granted patents
- 179
- Published applications
- 137
- Assignees
- 91
- Inventors
- 299
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 2 |
| 2003 | 3 | 5 |
| 2004 | 2 | 4 |
| 2005 | 2 | 3 |
| 2006 | 1 | 0 |
| 2007 | 2 | 5 |
| 2008 | 2 | 11 |
| 2009 | 3 | 5 |
| 2010 | 9 | 9 |
| 2011 | 6 | 4 |
| 2012 | 2 | 6 |
| 2013 | 5 | 9 |
| 2014 | 1 | 6 |
| 2015 | 5 | 7 |
| 2016 | 6 | 6 |
| 2017 | 4 | 7 |
| 2018 | 6 | 11 |
| 2019 | 6 | 7 |
| 2020 | 9 | 6 |
| 2021 | 9 | 5 |
| 2022 | 3 | 5 |
| 2023 | 2 | 2 |
| 2024 | 5 | 3 |
| 2025 | 3 | 4 |
| 2026 | 7 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Devices, systems, and methods for a cutting element6 Oct 2026US 12,753,658 B2Schlumberger Technology Corporation
- Fixed nozzle port retention mechanism29 Sep 2026US 12,747,639 B2Baker Hughes Oilfield Operations LLC
- Drill bit28 Jul 2026US 12,692,752 B2NOV Downhole Eurasia Limited
- Directed rock cuttings and fluid flow concepts for augmented drilling23 Jun 2026US 12,662,884 B1Baker Hughes Oilfield Operations LLC
- Drill bit assembly for reverse circulation hammer2 Jun 2026US 12,644,338 B2Mincon International Limited
- Earth-boring tools, nozzles, and associated structures, apparatus, and methods8 Oct 2026US 2026/0308986 A1Baker Hughes Oilfield Operations LLC
- Fixed nozzle port retention mechanism10 Sep 2026US 2026/0266143 A1Baker Hughes Oilfield Operations LLC
- Centrally located drill bit cleaning element2 Jul 2026US 2026/0185409 A1Schlumberger Technology Corporation
- Hydrojets rotary drill bit with volumetric cooling30 Apr 2026US 2026/0117596 A1Cool Edge Bits
- Hydrojets rotary drill bit26 Feb 2026US 2026/0055668 A1Cooled Edge Bits, Inc.
Most cited
By later US patents
- Mechanically locked drill bit components121US 5,906,245 ABaker Hughes Incorporated · 1999
- Hydromechanical drilling device116US 4,106,577 AThe Curators of the University of Missouri · 1978
- Mechanically locked cutters and nozzles111US 5,678,645 ABaker Hughes Incorporated · 1997
- Method of altering a balance characteristic and moment configuration of a drill bit and drill bit101US 6,186,251 B1Baker Hughes Incorporated · 2001
- Remotely operable hydraulic underreamer99US 6,378,632 B1Smith International, Inc. · 2002