E21D 9/10
Making by using boring or cutting machines
Official title: Making by using boring or cutting machines (E21D9/08 takes precedence; mining picks E21C35/18)
E21D9/10 (Making by using boring or cutting machines) appears on 524 US grants and 309 published applications in this corpus.
Search patents in E21D- Granted patents
- 524
- Published applications
- 309
- Assignees
- 243
- Inventors
- 1,081
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 19 | 0 |
| 1978 | 15 | 0 |
| 1979 | 9 | 0 |
| 1980 | 19 | 0 |
| 1981 | 16 | 0 |
| 1982 | 11 | 0 |
| 1983 | 10 | 0 |
| 1984 | 5 | 0 |
| 1985 | 11 | 0 |
| 1986 | 9 | 0 |
| 1987 | 15 | 0 |
| 1988 | 12 | 0 |
| 1989 | 10 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 11 | 0 |
| 1994 | 9 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 11 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 3 |
| 2002 | 11 | 4 |
| 2003 | 1 | 3 |
| 2004 | 0 | 1 |
| 2005 | 2 | 5 |
| 2006 | 2 | 3 |
| 2007 | 1 | 4 |
| 2008 | 6 | 2 |
| 2009 | 2 | 6 |
| 2010 | 3 | 5 |
| 2011 | 2 | 8 |
| 2012 | 5 | 7 |
| 2013 | 6 | 15 |
| 2014 | 12 | 22 |
| 2015 | 21 | 13 |
| 2016 | 9 | 14 |
| 2017 | 11 | 23 |
| 2018 | 15 | 27 |
| 2019 | 25 | 13 |
| 2020 | 23 | 24 |
| 2021 | 15 | 22 |
| 2022 | 22 | 27 |
| 2023 | 21 | 18 |
| 2024 | 23 | 17 |
| 2025 | 17 | 8 |
| 2026 | 12 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E21D 9/1006With rotary cutting tools269
- E21D 9/11With a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines121
- E21D 9/1093Devices for supporting, advancing or orientating the machine or the tool-carrier110
- E21D 9/108Remote control specially adapted for machines for driving tunnels or galleries54
- E21D 9/1066With fluid jets35
- E21D 9/106With percussive tools33
- E21D 9/1086Drives or transmissions specially adapted therefor28
- E21D 9/1073Applying thermal energy26
All 9 subgroupsShow fewer
Recent patents
- Tunnel boring machine and method for tunneling using a tunnel boring machine29 Sep 2026US 12,747,665 B2Herrenknecht AG
- High power laser tunneling mining and construction equipment and methods of use25 Aug 2026US 12,715,063 B2Foro Energy, Inc.
- Performance monitoring system for disc cutter of tunnel boring machine4 Aug 2026US 12,698,710 B2NK Photonics Ltd.
- Tunneling system28 Jul 2026US 12,692,790 B2Ccteg Taiyuan Research Institute
- Hybrid tunnel boring using combination of thermal and mechanical processes14 Jul 2026US 12,680,450 B2Phoenix Boring, Inc.
- Rolling Wedge Cutter Drum1 Oct 2026US 2026/0297869 A1
- Hybrid Tunnel Boring Using Combination of Thermal and Mechanical Processes1 Oct 2026US 2026/0298086 A1Phoenix Boring, Inc.
- Excited-vibration disc-cutting rock-breaking device of front eccentric block3 Sep 2026US 2026/0258726 A1Taiyuan University of Science and Technology
- Intelligent adaptive monitoring and control system for high-pressure jet excavation23 Jul 2026US 2026/0210246 A1Chongqing University
- Travel device, tunnel boring machine, trailing car, transport vehicle, tunnel boring system, and movement method23 Jul 2026US 2026/0210247 A1Komatsu Ltd.
Most cited
By later US patents
- Horizontal remote mining system, and method120US 5,879,057 AAmvest Corporation · 1999
- Mobile mining machine and method77US 4,548,442 AThe Robbins Company · 1985
- Cutting tool and method of manufacturing such a tool68US 4,453,775 APadley & Venables Limited · 1984
- Mining machine with driven disc cutters44US 7,934,776 B2Joy MM Delaware, Inc. · 2011
- Automatic control system and method for a machine used for excavating drifts, tunnels, stopes, or caverns43US 5,938,288 AHDRK Mining Research Limited · 1999