E21D 15/46
With load-measuring devices
Official title: with load-measuring devices; with alarm devices
E21D15/46 (With load-measuring devices) appears on 5 US grants and 3 published applications in this corpus.
Search patents in E21D- Granted patents
- 5
- Published applications
- 3
- Assignees
- 5
- Inventors
- 11
- Latest grant
- 23 Feb 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 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 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 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 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Device for roof support of underground mine/tunnel23 Feb 2016US 9,267,375 B2Council of Scientific and Industrial Research
- Circuit board connection for a pressure sensor used in mining hydraulics5 Sep 2000US 6,112,597 ADBT Automation GmbH
- Quick-release pit prop19 Oct 1999US 5,967,702 A
- Method and apparatus for determining compressive stress in pillars16 Sep 1997US 5,668,325 ACyprus Amax Coal Company
- Device for measuring the magnitude and direction of compression forces4 Apr 1978US 4,081,993 ABergwerksverband GmbH
Most cited
By later US patents
- Circuit board connection for a pressure sensor used in mining hydraulics12US 6,112,597 ADBT Automation GmbH · 2000
- Quick-release pit prop8US 5,967,702 A1999
- Method and apparatus for determining compressive stress in pillars6US 5,668,325 ACyprus Amax Coal Company · 1997
- Device for measuring the magnitude and direction of compression forces1US 4,081,993 ABergwerksverband GmbH · 1978
- Device for roof support of underground mine/tunnel1US 9,267,375 B2Council of Scientific and Industrial Research · 2016