E21B 7/30
Without earth removal
Official title: without earth removal
E21B7/30 (Without earth removal) appears on 154 US grants and 89 published applications in this corpus.
Search patents in E21B- Granted patents
- 154
- Published applications
- 89
- Assignees
- 57
- Inventors
- 153
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 0 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 3 |
| 2002 | 5 | 4 |
| 2003 | 4 | 5 |
| 2004 | 4 | 3 |
| 2005 | 1 | 3 |
| 2006 | 2 | 2 |
| 2007 | 2 | 3 |
| 2008 | 2 | 5 |
| 2009 | 1 | 1 |
| 2010 | 3 | 4 |
| 2011 | 3 | 0 |
| 2012 | 2 | 4 |
| 2013 | 2 | 5 |
| 2014 | 3 | 6 |
| 2015 | 3 | 4 |
| 2016 | 4 | 2 |
| 2017 | 6 | 5 |
| 2018 | 2 | 4 |
| 2019 | 7 | 4 |
| 2020 | 3 | 5 |
| 2021 | 5 | 4 |
| 2022 | 5 | 4 |
| 2023 | 3 | 5 |
| 2024 | 3 | 2 |
| 2025 | 2 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pullback system for drilling tool7 Apr 2026US 12,595,703 B2Vermeer Manufacturing Company
- Advanced drill string communication system, components and methods17 Feb 2026US 12,553,336 B2Merlin Technology, Inc.
- Tunneling and navigation systems including controller configured to determine environmental characteristic30 Sep 2025US 12,428,956 B2GE Infrastructure Technology LLC
- Pullback system for drilling tool8 Jul 2025US 12,352,165 B2Vermeer Manufacturing Company
- Advanced drill string communication system, components and methods18 Jun 2024US 12,012,849 B2Merlin Technology, Inc.
- Pullback system for drilling tool16 Jul 2026US 2026/0201752 A1Vermeer Manufacturing Company
- Pullback system for drilling tool2 Oct 2025US 2025/0305365 A1Vermeer Manufacturing Company
- Advanced Drill String Communication System, Components and Methods29 Aug 2024US 2024/0287894 A1Merlin Technology, Inc.
- Tunneling and navigation systems including controller configured to determine environmental characteristic16 May 2024US 2024/0159145 A1General Electric Company
- Pullback system for drilling tool14 Sep 2023US 2023/0287741 A1Vermeer Manufacturing Company
Most cited
By later US patents
- Method and apparatus for replacing buried pipe209US 4,507,019 AExpand-A-Line, Incorporated · 1985
- Pipe splitting and spreading system147US 5,439,320 A1995
- Horizontal drilling method and apparatus131US 5,803,666 A1998
- Replacing mains102US 4,674,914 ABritish Gas Corporation · 1987
- Cutting/expanding tool92US 5,306,101 AThe Brooklyn Union Gas Company · 1994