E21F 13/004
Staff transport system
Official title: {Staff transport system}
E21F13/004 (Staff transport system) appears on 13 US grants and 8 published applications in this corpus.
Search patents in E21F- Granted patents
- 13
- Published applications
- 8
- Assignees
- 11
- Inventors
- 34
- Latest grant
- 13 Jul 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 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 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 2 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Suspension device for monorail crane and monorail crane13 Jul 2021US 11,059,497 B2Taiyuan University of Technology
- Overhead rail guidance and signaling system6 Jun 2017US 9,669,843 B2
- Overhead rail guidance and signaling system3 Jan 2017US 9,533,691 B2
- Mine personnel carrier integrated information display21 Oct 2014US 8,866,618 B2Raytheon Company
- Mining utility transport vehicle29 Jun 2010US 7,743,869 B2Listerhill Total Maintenance Center LLC
- Suspension device for monorail crane and monorail crane25 Jun 2020US 2020/0198661 A1Taiyuan University of Technology
- Overhead Rail Guidance And Signaling System2 Mar 2017US 2017/0057522 A1
- Overhead Rail Guidance and Signaling System19 Feb 2015US 2015/0047528 A1
- Mine Personnel Carrier Integrated Information Display5 Jan 2012US 2012/0001743 A1Raytheon Company
- Transporation system for a sub-surface activity area23 Dec 2010US 2010/0319563 A1Acona Goup AS
Most cited
By later US patents
- Modular mine service vehicle101US 7,441,809 B1Oldenburg Group Incorporated · 2008
- Multiple personnel transporter vehicle for low vein mines30US 4,415,051 AMine Equipment Company · 1983
- Life protector enclosure for mines14US 4,815,363 A1989
- Shut-down apparatus for conveyor belts in underground mines13US 4,104,518 ASiemens Aktiengesellschaft · 1978
- Mine locomotive13US 4,212,250 AThomas Hill (Rotherham) Limited · 1980