E21B 19/143
Specially adapted for underwater drilling
Official title: {specially adapted for underwater drilling}
E21B19/143 (Specially adapted for underwater drilling) appears on 110 US grants and 95 published applications in this corpus.
Search patents in E21B- Granted patents
- 110
- Published applications
- 95
- Assignees
- 60
- Inventors
- 159
- Latest grant
- 7 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 9 | 2 |
| 2003 | 3 | 2 |
| 2004 | 2 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 3 |
| 2008 | 0 | 3 |
| 2009 | 2 | 4 |
| 2010 | 2 | 4 |
| 2011 | 1 | 5 |
| 2012 | 1 | 4 |
| 2013 | 3 | 5 |
| 2014 | 7 | 6 |
| 2015 | 5 | 3 |
| 2016 | 7 | 13 |
| 2017 | 5 | 7 |
| 2018 | 11 | 10 |
| 2019 | 11 | 9 |
| 2020 | 5 | 5 |
| 2021 | 4 | 3 |
| 2022 | 6 | 3 |
| 2023 | 2 | 1 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Rod handling system7 May 2024US 11,976,522 B2Rod Deployment Systems, LLC
- Onshore drilling rig and method for moving a top drive in a drill mast of an onshore drilling rig14 Nov 2023US 11,814,906 B2Bentec GmbH Drilling & Oilfield Systems
- Rod handling system30 May 2023US 11,661,803 B2Rod Deployment Systems, LLC
- Dual rotary elevating geotechnical drill29 Nov 2022US 11,512,535 B2Benthic USA LLC
- System and method for subsea well operation15 Nov 2022US 11,499,379 B2Rigtec Wellservice AS
- Rod handling system10 Aug 2023US 2023/0250701 A1Rod Deployment Systems, LLC
- Rod handling system3 Nov 2022US 2022/0349267 A1Rod Deployment Systems, LLC
- Onshore drilling rig and method for moving a top drive in a drill mast of an onshore drilling rig28 Jul 2022US 2022/0235614 A1Bentec GmbH Drilling & Oilfield Systems
- System and method for subsea well operation19 May 2022US 2022/0154537 A1Rigtec Wellservice AS
- Dual rotary elevating geotechnical drill12 Aug 2021US 2021/0246728 A1Benthic USA LLC
Most cited
By later US patents
- Combined drilling apparatus and method98US 6,158,516 ACudd Pressure Control, Inc. · 2000
- Drilling tower68US 6,343,892 B12002
- Method of forming and servicing wellbores from a main wellbore63US 6,279,658 B1Baker Hughes Incorporated · 2001
- Method and apparatus for a horizontal pipe handling system on a self-elevating jack-up drilling unit63US 6,609,573 B1Friede & Goldman, Ltd. · 2003
- Method and system for moving equipment into and through a conduit51US 6,454,011 B1Shell Oil Company · 2002