E21C 37/22
Hand tools or hand-held power-operated tools specially adapted for dislodging minerals
Official title: Hand tools or hand-held power-operated tools specially adapted for dislodging minerals (slitting machines guided solely by hand E21C25/64)
E21C37/22 (Hand tools or hand-held power-operated tools specially adapted for dislodging minerals) appears on 17 US grants and 8 published applications in this corpus.
Search patents in E21C- Granted patents
- 17
- Published applications
- 8
- Assignees
- 14
- Inventors
- 28
- Latest grant
- 29 Oct 2013
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 2 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Grinder bit29 Oct 2013US 8,567,872 B2Raytheon Company
- Boom arrangement for a scaling device and scaling device13 Apr 2010US 7,695,072 B2Atlas Copco Rock Drillas AB
- Mine scaling vehicle4 Dec 2007US 7,303,238 B1Oldenburg Group Incorporated
- Scaling assembly24 Apr 2007US 7,207,633 B2Astec Industries, Inc.
- Scaling bar7 Jun 2005US 6,901,621 B2Atelier D'Usinage Laquerre & Fils
- Method of mining using a disc cutter13 Nov 2025US 2025/0347224 A1Element Six Limited
- Method of mining a rock formation using a disc cutter and a rock breaker tool25 Jul 2024US 2024/0247588 A1Element Six (UK) Limited
- Scaling bar23 Dec 2021US 2021/0396136 A1
- Grinder bit25 Mar 2010US 2010/0074705 A1Raytheon Company
- Boom arrangement for a scaling device and scaling device14 May 2009US 2009/0121537 A1Atlas Copco Rock Drillas AB
Most cited
By later US patents
- Electrohydraulically operated portable power tool27US 3,995,703 ARobert Bosch GmbH · 1976
- Prospector tool27US 5,507,051 A1996
- Electrohydraulically operated portable power tool20US 4,094,365 ARobert Bosch GmbH · 1978
- Method and device for breaking a hard compact material18US 4,204,715 AAtlas Copco Aktiebolag · 1980
- Demolition tool9US 4,034,816 A1977