E21B 10/5676
Having a cutting face with different segments
Official title: {having a cutting face with different segments, e.g. mosaic-type inserts}
E21B10/5676 (Having a cutting face with different segments) appears on 231 US grants and 191 published applications in this corpus.
Search patents in E21B- Granted patents
- 231
- Published applications
- 191
- Assignees
- 51
- Inventors
- 305
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 9 | 1 |
| 2002 | 3 | 5 |
| 2003 | 1 | 1 |
| 2004 | 1 | 3 |
| 2005 | 0 | 2 |
| 2006 | 4 | 8 |
| 2007 | 0 | 8 |
| 2008 | 4 | 4 |
| 2009 | 9 | 6 |
| 2010 | 2 | 12 |
| 2011 | 5 | 9 |
| 2012 | 4 | 14 |
| 2013 | 6 | 12 |
| 2014 | 7 | 12 |
| 2015 | 19 | 13 |
| 2016 | 11 | 7 |
| 2017 | 9 | 5 |
| 2018 | 11 | 12 |
| 2019 | 8 | 12 |
| 2020 | 11 | 7 |
| 2021 | 10 | 9 |
| 2022 | 5 | 9 |
| 2023 | 8 | 5 |
| 2024 | 10 | 5 |
| 2025 | 4 | 5 |
| 2026 | 5 | 5 |
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
- Combination shear and gouging cutting element and well construction tools made therewith7 Jul 2026US 12,674,362 B2Shear Bits, Ltd.
- Drill bit cutter elements with multiple surface finishes28 Apr 2026US 12,612,826 B2National Oilwell Varco, L. P.
- Drill bit compact and method including graphene24 Mar 2026US 12,584,199 B2National Oilwell Varco, L. P.
- Devices, systems, and methods of a cutting element in a bit17 Mar 2026US 12,577,839 B2Schlumberger Technology Corporation
- 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.
- Drill bit cutter elements with multiple surface finishes6 Aug 2026US 2026/0226800 A1National Oilwell Varco, L. P.
- Devices, systems, and methods of a cutting element in a bit23 Jul 2026US 2026/0210189 A1Schlumberger Technology Corporation
- Drill bit compact and method including graphene9 Jul 2026US 2026/0193746 A1National Oilwell Varco, L. P.
Most cited
By later US patents
- Diamond rock tools for percussive and rotary crushing rock drilling421US 5,154,245 ASandvik AB · 1992
- Cutting element for drill bits333US 5,544,713 ADennis Tool Company · 1996
- Low pressure bonding of PCD bodies and method for drill bits and the like244US 4,943,488 ANorton Company · 1990
- Low pressure bonding of PCD bodies and method236US 5,030,276 ANorton Company · 1991
- Process for making diamond and cubic boron nitride compacts218US 4,525,179 AGeneral Electric Company · 1985