E21B 10/627
With plural detachable cutting elements
Official title: with plural detachable cutting elements
E21B10/627 (With plural detachable cutting elements) appears on 257 US grants and 261 published applications in this corpus.
Search patents in E21B- Granted patents
- 257
- Published applications
- 261
- Assignees
- 84
- Inventors
- 398
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 2 | 2 |
| 2006 | 2 | 2 |
| 2007 | 3 | 4 |
| 2008 | 2 | 10 |
| 2009 | 1 | 8 |
| 2010 | 10 | 13 |
| 2011 | 13 | 9 |
| 2012 | 12 | 13 |
| 2013 | 7 | 12 |
| 2014 | 9 | 20 |
| 2015 | 14 | 19 |
| 2016 | 18 | 15 |
| 2017 | 15 | 22 |
| 2018 | 20 | 15 |
| 2019 | 19 | 17 |
| 2020 | 17 | 11 |
| 2021 | 9 | 14 |
| 2022 | 12 | 16 |
| 2023 | 9 | 9 |
| 2024 | 15 | 15 |
| 2025 | 13 | 3 |
| 2026 | 5 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fixed cutter drill bits with mechanically attached cutter element assemblies18 Aug 2026US 12,709,946 B2Grant Prideco, L.P.
- PDC bit element with retention feature5 May 2026US 12,618,293 B2Taurex Drill Bits, LLC
- Multi-layer drill bit apparatus and systems21 Apr 2026US 12,607,072 B2Halliburton Energy Services.Inc.
- Drill bits for drilling subterranean boreholes and mechanically locked cutter elements for same21 Apr 2026US 12,607,073 B2National Oilwell Varco, L. P.
- Polycrystalline diamond bodies including one or more threads, apparatuses including the same, and methods of forming and using the same3 Feb 2026US 12,540,513 B2US Synthetic Corporation
- Drill bit3 Sep 2026US 2026/0258705 A1Zerdalab Ltd.
- Drill bits for drilling subterranean boreholes and mechanically locked cutter elements for same6 Aug 2026US 2026/0226799 A1National Oilwell Varco, L. P.
- Cutter with a lockable retention feature26 Mar 2026US 2026/0085584 A1Taurex Drill Bits, LLC
- Fixed cutter drill bits including cutter elements with variable exposures26 Feb 2026US 2026/0055667 A1Grant Prideco, L.P.
- Downhole tools having radially extendable elements5 Feb 2026US 2026/0036001 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Bit for subterranean drilling fabricated from separately-formed major components380US 5,560,440 ABaker Hughes Incorporated · 1996
- Cutting and drilling apparatus with threadably attached compacts176US 4,199,035 AGeneral Electric Company · 1980
- Mechanically locked drill bit components121US 5,906,245 ABaker Hughes Incorporated · 1999
- Mechanically locked cutters and nozzles111US 5,678,645 ABaker Hughes Incorporated · 1997
- Drill bit106US 4,838,366 A1989