E21C 25/16
Machines slitting solely by one or more rotating saws, cutting discs, or
Official title: Machines slitting solely by one or more rotating saws, cutting discs, or wheels
E21C25/16 (Machines slitting solely by one or more rotating saws, cutting discs, or) appears on 100 US grants and 97 published applications in this corpus.
Search patents in E21C- Granted patents
- 100
- Published applications
- 97
- Assignees
- 39
- Inventors
- 179
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 3 |
| 2004 | 0 | 2 |
| 2005 | 3 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 4 | 0 |
| 2009 | 0 | 3 |
| 2010 | 1 | 1 |
| 2011 | 2 | 2 |
| 2012 | 1 | 0 |
| 2013 | 0 | 7 |
| 2014 | 7 | 5 |
| 2015 | 3 | 3 |
| 2016 | 4 | 3 |
| 2017 | 2 | 11 |
| 2018 | 2 | 15 |
| 2019 | 14 | 2 |
| 2020 | 14 | 13 |
| 2021 | 4 | 7 |
| 2022 | 11 | 4 |
| 2023 | 5 | 3 |
| 2024 | 2 | 2 |
| 2025 | 2 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cutting device and support for same3 Feb 2026US 12,540,548 B2Joy Global Underground Mining LLC
- Cutter head for mining machine12 Aug 2025US 12,385,395 B2Joy Global Underground Mining LLC
- Disk cutter22 Jul 2025US 12,366,162 B2Element Six (UK) Limited
- Cutting device and support for same26 Mar 2024US 11,939,868 B2Joy Global Underground Mining LLC
- Cutting roller9 Jan 2024US 11,866,999 B2Hydac Technology GmbH
- Mining method24 Sep 2026US 2026/0286844 A1Element Six Limited
- Cutting device and support for same16 Jul 2026US 2026/0201800 A1Joy Global Underground Mining LLC
- Method of mining using a disc cutter13 Nov 2025US 2025/0347224 A1Element Six Limited
- Disk cutter16 Oct 2025US 2025/0320817 A1Element Six (UK) Limited
- Cutting disc with removable cutting portions12 Jun 2025US 2025/0188837 A1
Most cited
By later US patents
- Automated excavation machine69US 7,695,071 B2Minister of Natural Resources · 2010
- Mining method for steeply dipping ore bodies49US 6,857,706 B2Placer Dome Technical Services Limited · 2005
- 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
- Mineral winning machines37US 4,273,383 AGewerkschaft Eisenhutte Westfalia · 1981