E21B 19/087
By means of a swinging arm
Official title: by means of a swinging arm
E21B19/087 (By means of a swinging arm) appears on 128 US grants and 97 published applications in this corpus.
Search patents in E21B- Granted patents
- 128
- Published applications
- 97
- Assignees
- 73
- Inventors
- 219
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 4 |
| 2007 | 3 | 4 |
| 2008 | 3 | 4 |
| 2009 | 2 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 4 |
| 2012 | 3 | 2 |
| 2013 | 2 | 6 |
| 2014 | 2 | 2 |
| 2015 | 4 | 4 |
| 2016 | 2 | 3 |
| 2017 | 5 | 5 |
| 2018 | 0 | 6 |
| 2019 | 6 | 11 |
| 2020 | 10 | 7 |
| 2021 | 9 | 9 |
| 2022 | 8 | 7 |
| 2023 | 8 | 4 |
| 2024 | 5 | 4 |
| 2025 | 3 | 2 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Automated drilling arrangement1 Sep 2026US 12,723,476 B2
- Deployment of umbilical with tubular string19 May 2026US 12,631,074 B2Weatherford Technology Holdings, LLC
- Counterbalance systems and related methods for catwalk systems21 Apr 2026US 12,607,077 B2Forum US, Inc.
- Robotic pipe handler systems8 Apr 2025US 12,270,264 B1Canrig Robotic Technologies AS
- Automated apparatus for oil field drilling and workover operations25 Feb 2025US 12,234,692 B2Shengli Oilfield Shengji Petroleum Equipment Co., Ltd.
- System and apparatus for protective management of bottom hole assembly during deployment13 Aug 2026US 2026/0234998 A1Lynchpin Technologies (Cayman) LTD
- Drilling arrangement and methodology29 Jan 2026US 2026/0028879 A1
- Counterbalance systems and related methods for catwalk systems21 Aug 2025US 2025/0263988 A1Forum US, Inc.
- Automated drilling arrangement15 May 2025US 2025/0154837 A1
- Counterbalance systems and related methods for catwalk systems10 Oct 2024US 2024/0337164 A1Forum US, Inc.
Most cited
By later US patents
- Focusing in microscope systems73US 6,262,838 B1Genetic Microsystems, Inc. · 2001
- Automated arm for positioning of drilling tools such as an iron roughneck56US 7,178,612 B2National-Oilwell, L. P. · 2007
- Automated arm for positioning of drilling tools such as an iron roughneck52US 7,249,639 B2National-Oilwell, L. P. · 2007
- Post hole digger48US 4,961,471 A1990
- Robot arm44US 4,645,084 AConstruction Robotics, LLC · 1987