E21F 15/06
Filling-up mechanically
E21F15/06 (Filling-up mechanically) appears on 18 US grants and 24 published applications in this corpus.
Search patents in E21F- Granted patents
- 18
- Published applications
- 24
- Assignees
- 10
- Inventors
- 49
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
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| 1987 | 0 | 0 |
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| 1989 | 0 | 0 |
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| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
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| 1996 | 0 | 0 |
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| 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 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 2 | 0 |
| 2019 | 0 | 2 |
| 2020 | 3 | 4 |
| 2021 | 2 | 2 |
| 2022 | 1 | 1 |
| 2023 | 1 | 3 |
| 2024 | 2 | 3 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Coal-based solid waste transport and filling integrated machine mining system and method11 Nov 2025US 12,467,362 B2Anhui University of Science and Technology
- System and method for stabilizing a mine3 Jun 2025US 12,320,257 B2Drill Tech Drilling and Shoring, Inc.
- Isolated overburden grouting filling method for coal gangue underground emission reduction23 Jul 2024US 12,044,125 B2China University of Mining and Technology
- Method for filling deformable karst cave19 Mar 2024US 11,933,178 B2Shandong University
- Plug for a void, system and method28 Nov 2023US 11,828,179 B2Strata Products Worldwide, LLC
- Backfill material30 Jul 2026US 2026/0218614 A1Sika Technology AG
- System and method for stabilizing a mine18 Apr 2024US 2024/0125235 A1Drill Tech Drilling and Shoring, Inc.
- Isolated overburden grouting filling method for coal gangue underground emission reduction28 Mar 2024US 2024/0102343 A1China University of Mining and Technology
- Plug for a Void, System and Method21 Mar 2024US 2024/0093607 A1Strata Products Worldwide, LLC
- Method for filling deformable karst cave21 Dec 2023US 2023/0407746 A1Shandong University
Most cited
By later US patents
- Inclined shaft continuous feeding system for solid filling materials3US 11,192,724 B22021
- Plug for a void, system and method2US 10,550,695 B2Strata Products Worldwide, LLC · 2020
- Plug for a void, system and method2US 10,851,652 B2Strata Products Worldwide, LLC · 2020
- Apparatus and method for mining coal2US 8,882,204 B22014
- Apparatus and method for storing waste material2US 9,540,929 B22017