E21D 23/148
Wireless transmission of signals or commands
Official title: {Wireless transmission of signals or commands}
E21D23/148 (Wireless transmission of signals or commands) appears on 30 US grants and 13 published applications in this corpus.
Search patents in E21D- Granted patents
- 30
- Published applications
- 13
- Assignees
- 21
- Inventors
- 62
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 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 | 2 | 0 |
| 2003 | 3 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 4 |
| 2007 | 0 | 0 |
| 2008 | 3 | 1 |
| 2009 | 2 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 2 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Detection device and method for working surface, terminal, and storage medium24 Mar 2026US 12,584,410 B2Taiyuan University of Technology
- High stress impact detection for a longwall shearer23 Nov 2021US 11,180,992 B2Joy Global Underground Mining LLC
- System and method for remotely locating communication error support for hydraulic supports10 Nov 2020US 10,830,044 B1China University of Mining and Technology
- Method for implementing a centralized control platform of hydraulic support on fully mechanized mining working face in underground coal mines19 May 2020US 10,655,467 B2Taiyuan University of Technology
- Longwall face support in an underground mine3 Sep 2019US 10,404,948 B2Tiefenbach Control Systems GmbH
- Detection device and method for working surface, terminal, and storage medium11 Apr 2024US 2024/0117740 A1Taiyuan University of Technology
- High stress impact detection for a longwall shearer19 Aug 2021US 2021/0254462 A1Joy Global Underground Mining LLC
- Method for implementing a centralized control platform of hydraulic support on fully mechanized mining working face in underground coal mines17 May 2018US 2018/0135412 A1Taiyuan University of Technology
- Longwall face support in an underground mine19 Jan 2017US 2017/0019641 A1Tiefenbach Control Systems GmbH
- Providing energy to a passive wireless tag2 Oct 2014US 2014/0292495 A1National Oilwell Varco, L. P.
Most cited
By later US patents
- Long range multiple point wireless control and monitoring system121US 4,968,978 AStolar, Inc. · 1990
- Long range multiple point wireless control and monitoring system86US 5,087,099 AStolar, Inc. · 1992
- Method of transmitting data from a drillhead57US 5,268,683 AStolar, Inc. · 1993
- Method and a device for detecting the presence of personnel in underground mining28US 6,512,312 B1DBT Automation GmbH · 2003
- Method for automatically adjusting the cutting drum position of a resource cutting machine24US 5,181,934 AStolar, Inc. · 1993