E21B 10/12
With discs cutters
Official title: with discs cutters
E21B10/12 (With discs cutters) appears on 89 US grants and 30 published applications in this corpus.
Search patents in E21B- Granted patents
- 89
- Published applications
- 30
- Assignees
- 53
- Inventors
- 142
- Latest grant
- 12 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 8 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 1 | 3 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 1 | 2 |
| 2016 | 2 | 1 |
| 2017 | 2 | 3 |
| 2018 | 2 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 0 | 6 |
| 2023 | 0 | 0 |
| 2024 | 6 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Cutter analysis and mapping12 Nov 2024US 12,141,960 B2Halliburton Energy Services.Inc.
- Hybrid bit10 Sep 2024US 12,084,919 B2Schlumberger Technology Corporation
- Rolling blade PDC bit23 Jul 2024US 12,044,074 B2Saudi Arabian Oil Company
- Cutter head arrangement9 Jul 2024US 12,031,438 B2Master Sinkers (Pty) Ltd.
- Disc cutter for undercutting apparatus and a method of manufacture thereof19 Mar 2024US 11,933,107 B2Sandvik Mining and Construction Tools AB
- Cutter analysis and mapping23 Jan 2025US 2025/0029236 A1Halliburton Energy Services.Inc.
- Rolling blade pdc bit20 Jun 2024US 2024/0200408 A1Saudi Arabian Oil Company
- Housing mount assembly for a roller cutter29 Dec 2022US 2022/0412215 A1Esco Group LLC
- Hybrid bit14 Jul 2022US 2022/0220807 A1Schlumberger Technology Corporation
- Cutter analysis and mapping2 Jun 2022US 2022/0172338 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Rotary drilling bits131US 4,553,615 ANL Industries, Inc. · 1985
- Earth-boring bit with an advantageous cutting structure98US 5,311,958 ABaker Hughes Incorporated · 1994
- Drill bit and method of use thereof81US 4,511,006 A1985
- Concave drag bit cutter device and method46US 5,078,219 AThe United States of America as represented by the Secretary of the Interior · 1992
- Drill bit assembly42US 4,706,765 AFour E Inc. · 1987