E21B 10/485
With inserts in form of chisels, blades or the like
Official title: {with inserts in form of chisels, blades or the like}
E21B10/485 (With inserts in form of chisels, blades or the like) appears on 36 US grants and 30 published applications in this corpus.
Search patents in E21B- Granted patents
- 36
- Published applications
- 30
- Assignees
- 21
- Inventors
- 82
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 2 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 1 | 2 |
| 2016 | 2 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 5 |
| 2019 | 1 | 4 |
| 2020 | 2 | 0 |
| 2021 | 4 | 2 |
| 2022 | 2 | 0 |
| 2023 | 1 | 3 |
| 2024 | 3 | 1 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom23 Jun 2026US 12,662,382 B2Sf Diamond Co., Ltd.
- Sidewall coring tool systems and methods8 Jul 2025US 12,352,161 B2Schlumberger Technology Corporation
- Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom17 Dec 2024US 12,168,608 B2Sf Diamond Co., Ltd.
- Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom1 Oct 2024US 12,103,853 B2Sf Diamond Co., Ltd.
- Sidewall coring tool systems and methods16 Jul 2024US 12,037,900 B2Schlumberger Technology Corporation
- Polycrystalline Diamond Compact Table with Polycrystalline Diamond Extensions Therefrom3 Apr 2025US 2025/0109025 A1Sf Diamond Co., Ltd.
- Polycrystalline Diamond Compact Table with Polycrystalline Diamond Extensions Therefrom13 Feb 2025US 2025/0051170 A1Sf Diamond Co., Ltd.
- Sidewall coring tool systems and methods29 Aug 2024US 2024/0287900 A1Schlumberger Technology Corporation
- Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom28 Dec 2023US 2023/0416098 A1Sf Diamond Co., Ltd.
- Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom21 Dec 2023US 2023/0406711 A1Sf Diamond Co., Ltd.
Most cited
By later US patents
- Combination drill bit328US 5,016,718 A1991
- Self-centering polycrystalline diamond cutting rock bit135US 5,655,614 ASmith International, Inc. · 1997
- Kerf-cutting apparatus for increased drilling rates77US 5,145,017 AExxon Production Research Company · 1992
- Combination drill bit74US 5,176,212 A1993
- Vertical asphalt and concrete miller53US 4,968,101 A1990