E21D 9/102
By a longitudinally extending boom being pivotable about a vertical and a
Official title: {by a longitudinally extending boom being pivotable about a vertical and a transverse axis}
E21D9/102 (By a longitudinally extending boom being pivotable about a vertical and a) appears on 128 US grants and 77 published applications in this corpus.
Search patents in E21D- Granted patents
- 128
- Published applications
- 77
- Assignees
- 42
- Inventors
- 215
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 3 |
| 2012 | 0 | 1 |
| 2013 | 1 | 6 |
| 2014 | 4 | 4 |
| 2015 | 7 | 5 |
| 2016 | 1 | 0 |
| 2017 | 1 | 12 |
| 2018 | 3 | 15 |
| 2019 | 12 | 1 |
| 2020 | 11 | 9 |
| 2021 | 5 | 3 |
| 2022 | 4 | 6 |
| 2023 | 8 | 1 |
| 2024 | 2 | 4 |
| 2025 | 2 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Cutting apparatus4 Nov 2025US 12,460,545 B2Sandvik Mining and Construction Oy
- Cutter head for mining machine12 Aug 2025US 12,385,395 B2Joy Global Underground Mining LLC
- Roadway/tunnel excavation robot and automatic cutting control method17 Sep 2024US 12,091,977 B2China University of Mining and Technology
- Cutting device and support for same16 Jul 2026US 2026/0201800 A1Joy Global Underground Mining LLC
- Method and material removal system14 May 2026US 2026/0132715 A1Rockfeel GmbH
- Cutting device and support for same25 Jul 2024US 2024/0247587 A1Joy Global Underground Mining LLC
- Tunnel Tunneling System18 Jul 2024US 2024/0240560 A1Ccteg Taiyuan Research Institute
- Roadway/tunnel excavation robot and automatic cutting control method2 May 2024US 2024/0141784 A1China University of Mining and Technology
Most cited
By later US patents
- Cutting device with rotating disc43US 6,561,590 B2Odyssey Technology Pty Ltd · 2003
- Method and apparatus for controlling a tunneling machine34US 4,023,861 AGebr. Eickhoff, Maschinenfabrik und Eisengiesserei m.b.H. · 1977
- Method and apparatus for excavating a tunnel or gallery face33US 4,470,635 A1984
- Continuous control system for a mining or tunnelling machine33US 6,062,650 AAdvanced Technology For Rock Excavation Inc. · 2000
- Method and control system to limit shifting movement of a winning tool for a tunneling machine29US 4,027,210 AGebr. Eickhoff, Maschinenfabrik und Eisengiesserei m.b.H. · 1977