E21C 27/36
Machine self-propelled along the working face
E21C27/36 (Machine self-propelled along the working face) appears on 6 US grants and 7 published applications in this corpus.
Search patents in E21C- Granted patents
- 6
- Published applications
- 7
- Assignees
- 6
- Inventors
- 14
- Latest grant
- 19 Sep 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 2 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Self-propelled milling machine, as well as method for controlling a self-propelled milling machine19 Sep 2023US 11,761,155 B2Wirtgen GmbH
- Self-propelled milling machine, as well as method for controlling a self-propelled milling machine11 Oct 2022US 11,466,412 B2Wirtgen GmbH
- Self-propelled milling machine, as well as method for controlling a self-propelled milling machine25 Aug 2020US 10,753,052 B2Wirtgen GmbH
- Self-propelled milling machine, as well as method for controlling a self-propelled milling machine18 Jun 2019US 10,323,365 B2Wirtgen GmbH
- Plow bit assembly5 Jun 2018US 9,988,904 B2Caterpillar Global Mining Europe GmbH
- A cutting head assembly19 Sep 2024US 2024/0309761 A1Optima Mining Systems Pty Ltd
- Self-propelled milling machine, as well as method for controlling a self-propelled milling machine25 May 2023US 2023/0160156 A1Wirtgen GmbH
- Self-propelled milling machine, as well as method for controlling a self-propelled milling machine28 Jan 2021US 2021/0025119 A1Wirtgen GmbH
- Self-propelled milling machine, as well as method for controlling a self-propelled milling machine21 Nov 2019US 2019/0352864 A1Wirtgen GmbH
- Machine having positioning system for preventing miscoordination of gathering head and cutting implement6 Sep 2018US 2018/0252103 A1Caterpillar Global Mining Europe GmbH
Most cited
By later US patents
- Self-propelled milling machine, as well as method for controlling a self-propelled milling machine3US 10,323,365 B2Wirtgen GmbH · 2019
- Longwall installation with carrier for water and electric supply and propulsion rock3US 4,185,874 AGewerkschaft Eisenhutte Westfalia · 1980
- Self-propelled milling machine, as well as method for controlling a self-propelled milling machine1US 10,753,052 B2Wirtgen GmbH · 2020
- Self-propelled milling machine, as well as method for controlling a self-propelled milling machine1US 11,466,412 B2Wirtgen GmbH · 2022
- Plow bit assembly1US 9,988,904 B2Caterpillar Global Mining Europe GmbH · 2018