E21C 47/00
Machines for obtaining or the removal of materials in open-pit mines
Official title: Machines for obtaining or the removal of materials in open-pit mines (obtaining peat E21C49/00)
E21C47/00 (Machines for obtaining or the removal of materials in open-pit mines) appears on 124 US grants and 111 published applications in this corpus.
Search patents in E21C- Granted patents
- 124
- Published applications
- 111
- Assignees
- 64
- Inventors
- 255
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 2 | 0 |
| 2007 | 0 | 5 |
| 2008 | 0 | 3 |
| 2009 | 0 | 0 |
| 2010 | 2 | 6 |
| 2011 | 2 | 5 |
| 2012 | 3 | 4 |
| 2013 | 8 | 8 |
| 2014 | 2 | 13 |
| 2015 | 5 | 6 |
| 2016 | 8 | 4 |
| 2017 | 5 | 6 |
| 2018 | 8 | 9 |
| 2019 | 4 | 6 |
| 2020 | 13 | 9 |
| 2021 | 6 | 3 |
| 2022 | 4 | 4 |
| 2023 | 4 | 6 |
| 2024 | 4 | 4 |
| 2025 | 3 | 4 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mining productivity improvement methods and systems18 Nov 2025US 12,473,830 B2Hummingbird Solutions Inc.
- Method and system for controlling a plurality of drill rigs9 Sep 2025US 12,410,659 B2Technological Resources Pty. Limited
- Vehicle management system9 Sep 2025US 12,411,501 B2Hitachi Construction Machinery Co., Ltd.
- Ground engaging tool locking system10 Dec 2024US 12,163,315 B2Joy Global Surface Mining Inc
- Earth working machine having a rotatable working apparatus axially positionally retainable with high tightening torque by means of a central bolt arrangement, and method for establishing and releasing such retention12 Nov 2024US 12,139,861 B2Wirtgen GmbH
- Method for operating automatic mining of mining electric shovel based on auxiliary vision20 Aug 2026US 2026/0243054 A1China University of Mining and Technology
- Method for controlling automatic operation of mining electric shovel considering sudden load variations during excavations2 Jul 2026US 2026/0185445 A1China University of Mining and Technology
- Management system for unmanned vehicle and management method for unmanned vehicle7 May 2026US 2026/0126812 A1Komatsu Ltd.
- Method and System for Controlling a Plurality of Drill Rigs27 Nov 2025US 2025/0361775 A1Technological Resources Pty. Limited
- Method of mining using a disc cutter13 Nov 2025US 2025/0347224 A1Element Six Limited
Most cited
By later US patents
- Multi-source positioning system for work machines35US 7,139,651 B2Modular Mining Systems, Inc. · 2006
- Continuous track-mounted, self-propelled open-cast mining machine29US 5,092,659 A1992
- Method of operating a bucket wheel excavator28US 5,857,274 AKrupp Fordertechnik GmbH · 1999
- Electronic method and apparatus for detecting and reporting dislocation of heavy mining equipment28US 6,870,485 B22005
- Milling machine, in particular surface miner, and method for mining milled material of an open cast surface26US 8,528,988 B2Wirtgen GmbH · 2013