E21B 25/14
Mounted on pivot transverse to core axis
Official title: mounted on pivot transverse to core axis
E21B25/14 (Mounted on pivot transverse to core axis) appears on 17 US grants and 8 published applications in this corpus.
Search patents in E21B- Granted patents
- 17
- Published applications
- 8
- Assignees
- 13
- Inventors
- 41
- Latest grant
- 6 Feb 2024
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 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 0 |
| 2018 | 2 | 3 |
| 2019 | 1 | 1 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus for alternating between coring and drilling without tripping operations6 Feb 2024US 11,891,858 B2Coreall AS
- Piston corer and method of acquiring a soil sample8 Dec 2020US 10,859,472 B2Fugro Technology B.V.
- Float valve sub8 Sep 2020US 10,767,446 B2Japan Agency for Marine-Earth Science and Technology
- Coring tools including core sample flap catcher and related methods12 Feb 2019US 10,202,813 B2Baker Hughes Incorporated
- Core holding system23 Oct 2018US 10,107,056 B2PetroChina Company Limited
- Method and apparatus for alternating between coring and drilling without tripping operations3 Mar 2022US 2022/0065046 A1Coreall AS
- Piston corer and method of acquiring a soil sample18 Apr 2019US 2019/0113419 A1Fugro Technology B.V.
- Float valve sub26 Jul 2018US 2018/0209245 A1Japan Agency for Marine-Earth Science and Technology
- Coring tools including core sample flap catcher and related methods26 Apr 2018US 2018/0112482 A1Baker Hughes Incorporated
- Core Holding System29 Mar 2018US 2018/0088012 A1PetroChina Company Limited
Most cited
By later US patents
- Junk basket and method of removing foreign material from a well73US 4,059,155 AInternational Enterprises, Inc. · 1977
- Coring tool43US 4,930,587 ADiamant Boart-Stratabit (USA) Inc. · 1990
- Self activating, positively driven concealed core catcher29US 4,606,416 ANorton Christensen, Inc. · 1986
- Manhole cutter14US 4,924,951 A1990
- Shoe assembly with catcher for coring14US 5,146,999 ABaker Hughes Incorporated · 1992