E21B 10/5671
With chip breaking arrangements
Official title: {with chip breaking arrangements}
E21B10/5671 (With chip breaking arrangements) appears on 65 US grants and 46 published applications in this corpus.
Search patents in E21B- Granted patents
- 65
- Published applications
- 46
- Assignees
- 26
- Inventors
- 128
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 2 |
| 2002 | 4 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 2 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 5 |
| 2011 | 2 | 3 |
| 2012 | 4 | 1 |
| 2013 | 2 | 1 |
| 2014 | 0 | 4 |
| 2015 | 2 | 4 |
| 2016 | 4 | 2 |
| 2017 | 2 | 2 |
| 2018 | 3 | 4 |
| 2019 | 3 | 3 |
| 2020 | 0 | 0 |
| 2021 | 1 | 2 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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.
- Wear-resistant and collision-resistant polycrystalline diamond compact (PDC) drill bit with rostriform teeth and plurality of blades14 Jan 2025US 12,196,042 B1Southwest Petroleum University
- Cutting elements having non-planar surfaces and tools incorporating the same12 Nov 2024US 12,139,969 B2Schlumberger Technology Corporation
- Cutting elements having non-planar surfaces and tools incorporating the same24 Oct 2023US 11,795,764 B2Schlumberger Technology Corporation
- Drill bit cutter elements with multiple surface finishes6 Aug 2026US 2026/0226800 A1National Oilwell Varco, L. P.
- Combination shear and gouging cutting element and well construction tools made therewith17 Jul 2025US 2025/0230712 A1Shear Bits, Ltd.
- Drill bit cutter elements with multiple surface finishes10 Jul 2025US 2025/0223872 A1National Oilwell Varco, L. P.
- Novel Wear-Resistant and Collision-Resistant Polycrystalline Diamond Compact (PDC) Drill Bit With Rostriform Teeth and Plurality of Blades2 Jan 2025US 2025/0003294 A1Southwest Petroleum University
- Cutting elements having non-planar surfaces and tools incorporating the same8 Feb 2024US 2024/0044213 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Superhard cutting element having reduced surface roughness and method of modifying288US 5,447,208 ABaker Hughes Incorporated · 1995
- Modified superhard cutting elements having reduced surface roughness method of modifying, drill bits equipped with such cutting elements, and methods of drilling therewith253US 5,653,300 ABaker Hughes Incorporated · 1997
- Modified superhard cutting element having reduced surface roughness and method of modifying183US 5,967,250 ABaker Hughes Incorporated · 1999
- Combination milling tool and drill bit181US 5,979,571 ABaker Hughes Incorporated · 1999
- Method and apparatus for improving drill bit stability155US 5,558,170 ABaroid Technology, Inc. · 1996