E21D 9/1006
With rotary cutting tools
Official title: {with rotary cutting tools (for cutting simultaneously the whole cross-section E21D9/11; drill bits E21B10/00)}
E21D9/1006 (With rotary cutting tools) appears on 269 US grants and 164 published applications in this corpus.
Search patents in E21D- Granted patents
- 269
- Published applications
- 164
- Assignees
- 122
- Inventors
- 546
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 8 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 9 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 9 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 9 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 1 |
| 2002 | 4 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 3 |
| 2006 | 0 | 1 |
| 2007 | 1 | 2 |
| 2008 | 3 | 0 |
| 2009 | 1 | 4 |
| 2010 | 1 | 3 |
| 2011 | 1 | 5 |
| 2012 | 2 | 2 |
| 2013 | 2 | 10 |
| 2014 | 9 | 13 |
| 2015 | 11 | 8 |
| 2016 | 7 | 7 |
| 2017 | 6 | 19 |
| 2018 | 9 | 24 |
| 2019 | 21 | 5 |
| 2020 | 16 | 13 |
| 2021 | 8 | 7 |
| 2022 | 9 | 13 |
| 2023 | 9 | 3 |
| 2024 | 7 | 7 |
| 2025 | 4 | 4 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Performance monitoring system for disc cutter of tunnel boring machine4 Aug 2026US 12,698,710 B2NK Photonics Ltd.
- Hybrid tunnel boring using combination of thermal and mechanical processes14 Jul 2026US 12,680,450 B2Phoenix Boring, Inc.
- Rolling wedge cutter drum30 Jun 2026US 12,668,933 B1
- Tunnel tunneling system3 Mar 2026US 12,565,837 B2Ccteg Taiyuan Research Institute
- Cutting device and support for same3 Feb 2026US 12,540,548 B2Joy Global Underground Mining LLC
- 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
- Cutting device and support for same16 Jul 2026US 2026/0201800 A1Joy Global Underground Mining LLC
- Integrated rapid excavation equipment for rock roadways and method thereof28 May 2026US 2026/0146533 A1China University of Mining and Technology
Most cited
By later US patents
- 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
- Cutting device with rotating disc43US 6,561,590 B2Odyssey Technology Pty Ltd · 2003
- Replaceable multiple TCI kerf ring38US 6,367,569 B1Baker Hughes Incorporated · 2002