E21D 21/0033
Having a jacket or outer tube
Official title: {having a jacket or outer tube}
E21D21/0033 (Having a jacket or outer tube) appears on 119 US grants and 119 published applications in this corpus.
Search patents in E21D- Granted patents
- 119
- Published applications
- 119
- Assignees
- 78
- Inventors
- 244
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 2 |
| 2002 | 3 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 3 |
| 2005 | 1 | 3 |
| 2006 | 4 | 3 |
| 2007 | 1 | 4 |
| 2008 | 3 | 4 |
| 2009 | 1 | 4 |
| 2010 | 2 | 3 |
| 2011 | 1 | 7 |
| 2012 | 2 | 6 |
| 2013 | 5 | 7 |
| 2014 | 6 | 3 |
| 2015 | 6 | 6 |
| 2016 | 3 | 5 |
| 2017 | 4 | 3 |
| 2018 | 3 | 5 |
| 2019 | 7 | 6 |
| 2020 | 5 | 9 |
| 2021 | 6 | 9 |
| 2022 | 7 | 3 |
| 2023 | 4 | 7 |
| 2024 | 8 | 6 |
| 2025 | 2 | 5 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Deformable anchor cable28 Jul 2026US 12,692,791 B2Fuzhou University
- Rock bolt28 Apr 2026US 12,612,861 B2Sandvik Mining and Construction Australia (Production/Supply) Pty Ltd
- Dynamic rockbolt21 Apr 2026US 12,607,123 B2FCI Holdings Delaware, Inc.
- High capacity rock bolt7 Apr 2026US 12,595,736 B2FCI Holdings Delaware, Inc.
- Driver socket for installation of a ground reinforcement bolt3 Mar 2026US 12,565,839 B2Sandvik Mining and Construction Australia (Production/Supply) Ltd
- Rock bolt17 Sep 2026US 2026/0275866 A1Sandvik Mining and Construction Australia (Production/Supply) Pty Ltd
- Rock bolt13 Aug 2026US 2026/0235029 A1Sandvik Mining and Construction Australia (Production/Supply) Pty Ltd
- Geothermal-based self-compensating expansion shell rock bolt13 Aug 2026US 2026/0235030 A1China University of Geosciences (Wuhan)
- Rock bolt21 Aug 2025US 2025/0264022 A1Sandvik Mining and Construction Australia (Production/Supply) Pty Ltd
- Dynamic Rockbolt19 Jun 2025US 2025/0198288 A1FCI Holdings Delaware, Inc.
Most cited
By later US patents
- Rock bolt system and method of rock bolting108US 5,335,736 ACommonwealth Scientific and Industrial Research Organisation · 1994
- Cable bolt structure and related components37US 5,525,013 A1996
- Flexible rock anchor34US 4,798,501 ARudolf Hausherr & Sohne GmbH & Co. KG · 1989
- Rock-bolt stabilizer device for mining and tunneling applications30US 4,648,753 ABergwerksverband GmbH · 1987
- Friction rock stabilizer and sheathing means, in combination, and method of securing a friction rock stabilizer in an earth bore29US 4,490,074 AIngersoll-Rand Company · 1984