E21B 10/55
With preformed cutting elements
Official title: with preformed cutting elements
E21B10/55 (With preformed cutting elements) appears on 719 US grants and 678 published applications in this corpus.
Search patents in E21B- Granted patents
- 719
- Published applications
- 678
- Assignees
- 121
- Inventors
- 744
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 10 | 0 |
| 1998 | 10 | 0 |
| 1999 | 18 | 0 |
| 2000 | 15 | 0 |
| 2001 | 11 | 3 |
| 2002 | 8 | 7 |
| 2003 | 11 | 9 |
| 2004 | 8 | 7 |
| 2005 | 3 | 8 |
| 2006 | 5 | 7 |
| 2007 | 6 | 7 |
| 2008 | 8 | 24 |
| 2009 | 8 | 14 |
| 2010 | 9 | 37 |
| 2011 | 16 | 40 |
| 2012 | 27 | 30 |
| 2013 | 28 | 43 |
| 2014 | 32 | 53 |
| 2015 | 48 | 63 |
| 2016 | 42 | 51 |
| 2017 | 45 | 50 |
| 2018 | 61 | 48 |
| 2019 | 70 | 47 |
| 2020 | 52 | 38 |
| 2021 | 39 | 23 |
| 2022 | 25 | 14 |
| 2023 | 19 | 14 |
| 2024 | 19 | 16 |
| 2025 | 16 | 11 |
| 2026 | 10 | 14 |
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
- Non-uniform roller cone14 Jul 2026US 12,680,393 B2Schlumberger Technology Corporation
- Polycrystalline diamond and methods for fabricating the same14 Jul 2026US 12,680,395 B2US Synthetic Corporation
- Polycrystalline diamond compact bit with large-sized cutters7 Jul 2026US 12,674,361 B2Southwest Petroleum University
- Refreshable polycrystalline diamond compact (PDC) drill bits23 Jun 2026US 12,662,885 B2Saudi Arabian Oil Company
- Earth-boring tools including cutting elements having different characteristics in different regions of the earth-boring tools10 Sep 2026US 2026/0266140 A1Baker Hughes Oilfield Operations LLC
- Fixed cutter drill bits including cutter elements with high abrasion resistant polycrystalline diamond segments27 Aug 2026US 2026/0251020 A1Grant Prideco, L.P.
- Producing hydro-efflux hammer using catalyst-free pdc cutters20 Aug 2026US 2026/0241447 A1Saudi Arabian Oil Company
- Drill bit cutter elements with one or more textured, non-planar surfaces on cutting faces thereof and drill bits including same13 Aug 2026US 2026/0234995 A1National Oilwell Varco, L. P.
- Fixed cutter drill bits including cutter elements with enhanced durability13 Aug 2026US 2026/0234996 A1Grant Prideco, L.P.
Most cited
By later US patents
- Bit for subterranean drilling fabricated from separately-formed major components380US 5,560,440 ABaker Hughes Incorporated · 1996
- Expandable gage bit for drilling and method of drilling271US 5,361,859 ABaker Hughes Incorporated · 1994
- Impregnated bit with PDC cutters in cone area197US 6,510,906 B1Baker Hughes Incorporated · 2003
- Superabrasive elements, methods of manufacturing, and drill bits including same194US 8,236,074 B1US Synthetic Corporation · 2012
- Stress related placement of engineered superabrasive cutting elements on rotary drag bits190US 6,021,859 ABaker Hughes Incorporated · 2000