E21D 19/00
Provisional protective covers for working space
Official title: Provisional protective covers for working space (E21D9/06, E21D23/00 take precedence)
E21D19/00 (Provisional protective covers for working space) appears on 64 US grants and 27 published applications in this corpus.
Search patents in E21D- Granted patents
- 64
- Published applications
- 27
- Assignees
- 46
- Inventors
- 132
- Latest grant
- 16 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 3 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 2 |
| 2017 | 2 | 1 |
| 2018 | 1 | 2 |
| 2019 | 2 | 4 |
| 2020 | 2 | 1 |
| 2021 | 1 | 3 |
| 2022 | 2 | 1 |
| 2023 | 1 | 0 |
| 2024 | 2 | 1 |
| 2025 | 0 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of no-pillar mining with gob-entry retaining adapted for fully-mechanized top coal caving in thick coal seam16 Jul 2024US 12,037,905 B2China University of Mining and Technology, Beijing
- Swing arm plow apparatuses and methods4 Jun 2024US 12,000,284 B1
- Polymer sheet, method of installing and producing same11 Apr 2023US 11,624,280 B2Corex Plastices (Australia) Pty Ltd
- Apparatus for controllably unfolding flexible mesh for continuous miner, and continuous miner12 Jul 2022US 11,384,638 B2China University of Mining and Technology
- Method of treating tunnel collapse with roof-contacted shield support15 Feb 2022US 11,248,464 B2China Communications Construction Co., Ltd.
- Meshing plan for controlling mesh installation6 Aug 2026US 2026/0226831 A1Sandvik Mining and Construction Oy
- Device for providing braids, system comprising the device and method for providing braids4 Sep 2025US 2025/0277448 A1Geobrugg AG
- Rebar carriage for the construction of concrete structures3 Jul 2025US 2025/0215707 A1Grupo Empresarial Tecozam SL
- Restraining device21 Mar 2024US 2024/0092247 A1
- Method of no-pillar mining with gob-entry retaining adapted for fully-mechanized top coal caving in thick coal seam1 Sep 2022US 2022/0275726 A1China University of Mining and Technology, Beijing
Most cited
By later US patents
- Tunnel excavator with crawler drive and roof support bearing frames28US 6,206,478 B1Ishikawajima-Harima Heavy Industries Co., Ltd. · 2001
- Pivotal roof bolter and extendable rotatable protective canopy for mining machine22US 4,297,057 ADresser Industries, Inc. · 1981
- Mine roof support for a mobile drilling machine19US 4,079,792 AMining Equipment Division, a division of FMC Corporation · 1978
- Safety shield attachment16US 4,022,026 A1977
- Methods of and apparatus for applying roof mats to mine workings16US 4,122,682 A1978