E21B 10/5735
Interface between the substrate and the cutting element
Official title: {Interface between the substrate and the cutting element}
E21B10/5735 (Interface between the substrate and the cutting element) appears on 538 US grants and 478 published applications in this corpus.
Search patents in E21B- Granted patents
- 538
- Published applications
- 478
- Assignees
- 79
- Inventors
- 466
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 17 | 0 |
| 1998 | 10 | 0 |
| 1999 | 15 | 0 |
| 2000 | 22 | 0 |
| 2001 | 21 | 8 |
| 2002 | 13 | 8 |
| 2003 | 10 | 6 |
| 2004 | 7 | 4 |
| 2005 | 5 | 7 |
| 2006 | 7 | 12 |
| 2007 | 4 | 8 |
| 2008 | 6 | 17 |
| 2009 | 10 | 18 |
| 2010 | 14 | 21 |
| 2011 | 18 | 29 |
| 2012 | 23 | 31 |
| 2013 | 23 | 27 |
| 2014 | 33 | 52 |
| 2015 | 22 | 33 |
| 2016 | 26 | 34 |
| 2017 | 32 | 31 |
| 2018 | 34 | 31 |
| 2019 | 42 | 30 |
| 2020 | 24 | 23 |
| 2021 | 18 | 9 |
| 2022 | 7 | 15 |
| 2023 | 11 | 10 |
| 2024 | 15 | 7 |
| 2025 | 4 | 1 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polycrystalline diamond and methods for fabricating the same14 Jul 2026US 12,680,395 B2US Synthetic Corporation
- Command address input buffer bias current reduction2 Jun 2026US 12,645,399 B2
- Producing hydro-efflux hammer using catalyst-free PDC cutters5 May 2026US 12,617,015 B2Saudi Arabian Oil Company
- Polycrystalline diamond assemblies with cast mounting elements10 Mar 2026US 12,571,482 B2Schlumberger Technology Corporation
- Rock-cutting tool and method for mine and oil drilling24 Feb 2026US 12,560,029 B2Diarotech S.A.
- Command address input buffer bias current reduction10 Sep 2026US 2026/0267562 A1Lodestar Licensing Group 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
- Cutting composite formed of cemented carbide substrate and diamond layer481US 5,120,327 ADiamant Boart-Stratabit (USA) Inc. · 1992
- Rock bits and inserts therefor390US 4,811,801 ASmith International, Inc. · 1989
- Cutting element for drill bits333US 5,544,713 ADennis Tool Company · 1996
- Rotary drill bit318US 4,109,737 AGeneral Electric Company · 1978
- Composite polycrystalline diamond compact with improved impact resistance259US 5,011,515 A1991