H01H 21/52
With means for introducing a predetermined time delay
Official title: with means for introducing a predetermined time delay
H01H21/52 (With means for introducing a predetermined time delay) appears on 12 US grants and 7 published applications in this corpus.
Search patents in H01H- Granted patents
- 12
- Published applications
- 7
- Assignees
- 5
- Inventors
- 19
- Latest grant
- 11 Sep 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
Most cited
By later US patents
- Apparatus and method for braking electric motors104US 6,037,729 ABlack & Decker Inc. · 2000
- Braking circuit for an electric motor31US 5,449,992 AMarquardt GmbH · 1995
- Braking circuit switch for an electric motor18US 5,644,112 AMarquardt GmbH · 1997
- Electric appliance15US 6,111,240 ASharp Kabushiki Kaisha · 2000
- Switch arrangement14US 4,725,764 ABSG-Schalttechnik GmbH & Co. KG · 1988