E21B 17/105
Split type
Official title: {split type}
E21B17/105 (Split type) appears on 79 US grants and 59 published applications in this corpus.
Search patents in E21B- Granted patents
- 79
- Published applications
- 59
- Assignees
- 60
- Inventors
- 149
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 3 |
| 2012 | 0 | 2 |
| 2013 | 0 | 4 |
| 2014 | 2 | 5 |
| 2015 | 6 | 3 |
| 2016 | 3 | 2 |
| 2017 | 6 | 6 |
| 2018 | 3 | 5 |
| 2019 | 4 | 5 |
| 2020 | 5 | 3 |
| 2021 | 5 | 2 |
| 2022 | 1 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 3 |
| 2025 | 2 | 4 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vortex-induced vibration strake arrangements28 Jul 2026US 12,692,958 B2Advanced Innergy Ltd.
- Locator for survey apparatus2 Jun 2026US 12,644,345 B2Imdex Technologies Pty Ltd
- Customized centralizing housing for downhole tool13 Jan 2026US 12,523,104 B2Halliburton Energy Services.Inc.
- Shank adapter, rock drilling machine and method29 Jul 2025US 12,371,952 B2Sandvik Mining and Construction Oy
- Spacer segment and a spacer3 Jun 2025US 12,320,209 B2Kwik-Zip Pty. Ltd.
- Vortex-induced vibration strake arrangements8 Oct 2026US 2026/0309253 A1Advanced Innergy Ltd.
- Installation of subsea risers16 Jul 2026US 2026/0201755 A1Subsea 7 Norway AS
- Pipe protection sleeve16 Oct 2025US 2025/0320949 A1Oceaneering International, Inc.
- Locator for survey apparatus3 Jul 2025US 2025/0215754 A1Imdex Technologies Pty Ltd
- Customized centralizing housing for downhole tool5 Jun 2025US 2025/0179882 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Drill pipe/casing protector and method93US 5,069,297 ARudolph E. Krueger, Inc. · 1991
- Drill pipe protector71US 4,796,670 AExxon Production Research Company · 1989
- Sucker rod guide62US 4,858,688 A1989
- Drill pipe tubing and casing protectors49US 5,901,798 AHydril U.K. Limited · 1999
- Drill pipe protector40US 4,398,772 AThe Mead Corporation · 1983