E21B 10/5673
Having a non planar or non circular cutting face
Official title: {having a non planar or non circular cutting face}
E21B10/5673 (Having a non planar or non circular cutting face) appears on 439 US grants and 374 published applications in this corpus.
Search patents in E21B- Granted patents
- 439
- Published applications
- 374
- Assignees
- 93
- Inventors
- 577
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 10 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 13 | 0 |
| 1999 | 14 | 0 |
| 2000 | 13 | 0 |
| 2001 | 14 | 8 |
| 2002 | 7 | 8 |
| 2003 | 10 | 2 |
| 2004 | 2 | 5 |
| 2005 | 5 | 7 |
| 2006 | 5 | 9 |
| 2007 | 0 | 5 |
| 2008 | 3 | 11 |
| 2009 | 6 | 8 |
| 2010 | 7 | 16 |
| 2011 | 7 | 17 |
| 2012 | 9 | 13 |
| 2013 | 13 | 18 |
| 2014 | 15 | 27 |
| 2015 | 16 | 18 |
| 2016 | 25 | 16 |
| 2017 | 14 | 17 |
| 2018 | 15 | 24 |
| 2019 | 25 | 29 |
| 2020 | 19 | 16 |
| 2021 | 19 | 20 |
| 2022 | 17 | 24 |
| 2023 | 17 | 14 |
| 2024 | 31 | 13 |
| 2025 | 13 | 12 |
| 2026 | 12 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cutting element including two or more shaped cutting features, each having a convex and inwardly/downwardly angled shape29 Sep 2026US 12,747,638 B2Halliburton Energy Services.Inc.
- Cutter elements with concave recesses and fixed cutter drill bit including same18 Aug 2026US 12,709,947 B2National Oilwell Varco, L. P.
- Drill bit with effective side rake for weight on bit reducing effect28 Jul 2026US 12,692,751 B2Varel Energy Oil Field Equipment Trading L.L.C
- Polycrystalline diamond and methods for fabricating the same14 Jul 2026US 12,680,395 B2US Synthetic Corporation
- Combination shear and gouging cutting element and well construction tools made therewith7 Jul 2026US 12,674,362 B2Shear Bits, Ltd.
- A cutting element and methods of making same24 Sep 2026US 2026/0286782 A1Element Six (UK) Limited
- 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
- 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
- Cutting elements for rotary drill bits409US 5,135,061 A1992
- Rock bits and inserts therefor390US 4,811,801 ASmith International, Inc. · 1989
- Rock bit with diamond tip inserts349US 4,694,918 ASmith International, Inc. · 1987
- Cutting element for drill bits333US 5,544,713 ADennis Tool Company · 1996
- Diamond cutting structure for drilling hard subterranean formations322US 5,460,233 ABaker Hughes Incorporated · 1995