E21D 9/108
Remote control specially adapted for machines for driving tunnels or galleries
Official title: {Remote control specially adapted for machines for driving tunnels or galleries (for machines for slitting or completely freeing the mineral E21C35/24)}
E21D9/108 (Remote control specially adapted for machines for driving tunnels or galleries) appears on 54 US grants and 37 published applications in this corpus.
Search patents in E21D- Granted patents
- 54
- Published applications
- 37
- Assignees
- 40
- Inventors
- 169
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
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| 1990 | 0 | 0 |
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| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
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| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 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 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 6 |
| 2014 | 5 | 1 |
| 2015 | 3 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 3 |
| 2018 | 5 | 3 |
| 2019 | 2 | 2 |
| 2020 | 1 | 4 |
| 2021 | 3 | 5 |
| 2022 | 4 | 3 |
| 2023 | 6 | 3 |
| 2024 | 6 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rock-piercing flexible rock drilling robot and rock breaking method12 Aug 2025US 12,385,391 B2Central South University
- Roadway/tunnel excavation robot and automatic cutting control method17 Sep 2024US 12,091,977 B2China University of Mining and Technology
- Projectile augmented boring system30 Jul 2024US 12,049,825 B2Hypersciences, Inc.
- Method for monitoring and analyzing large tunnel machines based on automatic collection of big data16 Jul 2024US 12,037,908 B1Anhui Digital Intelligent Construction Research Institute Co., Ltd
- Projectile drilling system21 May 2024US 11,988,072 B1Hypersciences, Inc.
- Modularly assembled full-automatic tunneling and rock-breaking robots and working methods thereof18 Jun 2026US 2026/0168378 A1Central South University
- Roadway/tunnel excavation robot and automatic cutting control method2 May 2024US 2024/0141784 A1China University of Mining and Technology
- Environmental monitoring apparatus and method for mine tunneling robot27 Apr 2023US 2023/0127366 A1China University of Mining and Technology
- Rock-piercing flexible rock drilling robot and rock breaking method23 Feb 2023US 2023/0059714 A1Central South University
- Cutting assembly for a mining machine16 Feb 2023US 2023/0048925 A1Sandvik Mining and Construction Oy
Most cited
By later US patents
- Automatic control system and method for a machine used for excavating drifts, tunnels, stopes, or caverns43US 5,938,288 AHDRK Mining Research Limited · 1999
- Portable earth boring machine with steering head38US 4,013,134 AThe Richmond Manufacturing Company · 1977
- Transport apparatus and method of forming same37US 5,205,612 AZ C Mines Pty. Ltd. · 1993
- Method and apparatus for controlling a tunneling machine34US 4,023,861 AGebr. Eickhoff, Maschinenfabrik und Eisengiesserei m.b.H. · 1977
- Continuous control system for a mining or tunnelling machine33US 6,062,650 AAdvanced Technology For Rock Excavation Inc. · 2000