E21D 21/0093
Accessories
Official title: {Accessories}
E21D21/0093 (Accessories) appears on 108 US grants and 64 published applications in this corpus.
Search patents in E21D- Granted patents
- 108
- Published applications
- 64
- Assignees
- 67
- Inventors
- 186
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 7 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 4 |
| 2010 | 2 | 5 |
| 2011 | 2 | 3 |
| 2012 | 4 | 1 |
| 2013 | 1 | 3 |
| 2014 | 2 | 0 |
| 2015 | 0 | 8 |
| 2016 | 2 | 2 |
| 2017 | 2 | 4 |
| 2018 | 1 | 3 |
| 2019 | 4 | 4 |
| 2020 | 5 | 7 |
| 2021 | 5 | 4 |
| 2022 | 2 | 3 |
| 2023 | 2 | 2 |
| 2024 | 3 | 1 |
| 2025 | 2 | 0 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dolly for rockbolt2 Dec 2025US 12,486,769 B2FCI Holdings Delaware, Inc.
- Connection device and system for suspending a monorail beam from a roof bolt12 Aug 2025US 12,385,189 B2Sandvik Mining and Construction Oy
- Screen handling system31 Dec 2024US 12,180,835 B2Joy Global Underground Mining LLC
- Rock bolt assembly comprising a sensor assembly18 Jun 2024US 12,012,856 B2Sandvik Mining and Construction Australia Pty Ltd
- Rock bolt with information display region19 Mar 2024US 11,933,175 B2Sandvik Mining and Construction Tools AB
- Rock Bolt Device with Replaceable Head16 Apr 2026US 2026/0103982 A1
- Adapter for rock or building anchor system5 Mar 2026US 2026/0063036 A1MontanuniversitäT Leoben
- Dolly for Rockbolt26 Feb 2026US 2026/0055706 A1FCI Holdings Delaware, Inc.
- Sensor apparatus for use in a tunnel1 Jan 2026US 2026/0002635 A1Sandvik Mining and Construction Australia (Production/Supply) Pty Ltd
- Dolly for Rockbolt31 Oct 2024US 2024/0360760 A1FCI Holdings Delaware, Inc.
Most cited
By later US patents
- Method of rock bolting and rock bolt122US 4,511,289 AAtlas Copco Aktiebolag · 1985
- Anchored cable sling system90US 5,584,608 A1996
- Post tensionable grouted anchor assembly53US 4,295,761 AStratabolt Corporation · 1981
- Cuvette cartridge35US 4,178,345 AAbbott Laboratories · 1979
- Alignment device31US 4,247,225 AKamak Corporation · 1981