E21B 10/60
Drill bits: characterised by conduits or nozzles for drilling fluids
Official title: characterised by conduits or nozzles for drilling fluids (for roller bits E21B10/18; for percussion drill bits E21B10/38)
E21B10/60 (Drill bits: characterised by conduits or nozzles for drilling fluids) appears on 793 US grants and 537 published applications in this corpus.
Search patents in E21B- Granted patents
- 793
- Published applications
- 537
- Assignees
- 263
- Inventors
- 1,103
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 12 | 0 |
| 1982 | 9 | 0 |
| 1983 | 18 | 0 |
| 1984 | 15 | 0 |
| 1985 | 19 | 0 |
| 1986 | 15 | 0 |
| 1987 | 22 | 0 |
| 1988 | 20 | 0 |
| 1989 | 24 | 0 |
| 1990 | 10 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 9 | 0 |
| 1994 | 14 | 0 |
| 1995 | 18 | 0 |
| 1996 | 11 | 0 |
| 1997 | 16 | 0 |
| 1998 | 25 | 0 |
| 1999 | 25 | 0 |
| 2000 | 35 | 0 |
| 2001 | 15 | 2 |
| 2002 | 9 | 6 |
| 2003 | 8 | 8 |
| 2004 | 3 | 7 |
| 2005 | 6 | 8 |
| 2006 | 4 | 14 |
| 2007 | 9 | 15 |
| 2008 | 10 | 23 |
| 2009 | 5 | 16 |
| 2010 | 18 | 42 |
| 2011 | 14 | 14 |
| 2012 | 12 | 26 |
| 2013 | 24 | 33 |
| 2014 | 20 | 21 |
| 2015 | 22 | 30 |
| 2016 | 28 | 44 |
| 2017 | 20 | 31 |
| 2018 | 34 | 34 |
| 2019 | 33 | 29 |
| 2020 | 31 | 33 |
| 2021 | 38 | 22 |
| 2022 | 21 | 22 |
| 2023 | 10 | 17 |
| 2024 | 17 | 13 |
| 2025 | 22 | 16 |
| 2026 | 20 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydrojets rotary drill bit6 Oct 2026US 12,753,657 B2Cooled Edge Bits, Inc.
- 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
- Underground directional drilling apparatus22 Sep 2026US 12,742,358 B1Melfred Borzall, Inc.
- Drill head for use with microtunneling apparatus15 Sep 2026US 12,735,946 B2OptionX Holdings Pty Ltd
- High pressure fluid jet drill system8 Oct 2026US 2026/0308985 A1Dig Energy, Inc.
- Earth-boring tools, nozzles, and associated structures, apparatus, and methods8 Oct 2026US 2026/0308986 A1Baker Hughes Oilfield Operations LLC
- Underground directional drilling apparatus24 Sep 2026US 2026/0286786 A1Melfred Borzall, Inc.
- Fixed nozzle port retention mechanism10 Sep 2026US 2026/0266143 A1Baker Hughes Oilfield Operations LLC
- Fully sealed down the hole hammer16 Jul 2026US 2026/0201760 A1Sandvik Mining and Construction Oy
Most cited
By later US patents
- Combination drill bit328US 5,016,718 A1991
- Rotary drill bit for use in drilling holes in subsurface earth formations252US 4,889,017 AReed Tool Company · 1989
- Impregnated bit with PDC cutters in cone area197US 6,510,906 B1Baker Hughes Incorporated · 2003
- Wellbore milling and drilling190US 5,887,655 AWeatherford/Lamb, Inc. · 1999
- Stress related placement of engineered superabrasive cutting elements on rotary drag bits190US 6,021,859 ABaker Hughes Incorporated · 2000