E21C 37/10
Devices with expanding elastic casings
E21C37/10 (Devices with expanding elastic casings) appears on 14 US grants and 6 published applications in this corpus.
Search patents in E21C- Granted patents
- 14
- Published applications
- 6
- Assignees
- 11
- Inventors
- 27
- Latest grant
- 19 Mar 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Hydraulic rock fracturing device19 Mar 2019US 10,233,754 B22516139 Ontario Inc.
- Rock breaking product23 Jun 2015US 9,062,953 B2Sandvik Mining and Construction Rsa (Pty) Ltd
- Method of and apparatus for breaking rock6 May 2008US 7,367,631 B2NXCO International Limited
- Hydraulic expansion tube23 Oct 2001US 6,305,753 B1
- Apparatus for hydraulically splitting up rock14 Oct 1997US 5,676,427 A
- Hybrid-type rock splitting packer using water pressure and rubber inflation pressure3 Oct 2024US 2024/0328316 A1Songam Co., Ltd
- Hydraulic rock fracturing device30 Nov 2017US 2017/0342833 A12516139 Ontario Inc.
- Rock Breaking Product8 Aug 2013US 2013/0199393 A1Sandvik Mining and Construction Rsa (Pty) Ltd
- Expansion device for breaking solid material, use of the device and method for producing it19 Apr 2012US 2012/0091783 A1Emstone AB
- Device for breaking solid material and method of manufacturing a hose element for such a device3 Sep 2009US 2009/0218877 A1Emstone AB
Most cited
By later US patents
- Pressure actuated fracture device8US 5,398,998 AAeroquip Corporation · 1995
- Hydraulic rock breaking tool5US 4,657,306 A1987
- Rock breaking product5US 9,062,953 B2Sandvik Mining and Construction Rsa (Pty) Ltd · 2015
- Power unit4US 4,690,460 AGorno-Altaisky Gosudarstvenny Pedagogichesky Institut · 1987
- Hydraulic expansion tube4US 6,305,753 B12001