H01F 7/1883
By steepening leading and trailing edges of magnetisation pulse
Official title: {by steepening leading and trailing edges of magnetisation pulse, e.g. printer drivers}
H01F7/1883 (By steepening leading and trailing edges of magnetisation pulse) appears on 33 US grants and 11 published applications in this corpus.
Search patents in H01F- Granted patents
- 33
- Published applications
- 11
- Assignees
- 30
- Inventors
- 66
- Latest grant
- 7 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 2 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 2 |
| 2021 | 2 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- System and methods for operating a solenoid valve7 May 2024US 11,976,744 B2Capstan Ag Systems, Inc.
- Applicator comprising an integrated control circuit10 Oct 2023US 11,779,942 B2Dürr Systems AG
- Method for actuating a solenoid valve, and compressed-air installation comprising a solenoid valve11 Jan 2022US 11,221,088 B2Continental Teves AG & Co. oHG
- Applicator comprising an integrated control circuit9 Nov 2021US 11,167,296 B2Dürr Systems AG
- Control circuit, and method for improving the measurability of a mechanical switch-on process of an electromagnetic actuator4 May 2021US 10,996,274 B2Schaeffler Technologies AG & Co. KG
- Applicator comprising an integrated control circuit10 Feb 2022US 2022/0040715 A1Dürr Systems AG
- System and methods for operating a solenoid valve9 Dec 2021US 2021/0381617 A1Capstan Ag Systems, Inc.
- Applicator comprising an integrated control circuit27 Aug 2020US 2020/0269260 A1Dürr Systems AG
- Method for actuating a solenoid valve, and compressed-air installation comprising a solenoid valve20 Feb 2020US 2020/0056718 A1Continental Teves AG & Co. oHG
- Control circuit, and method for improving the measurability of a mechanical switch-on process of an electromagnetic actuator12 Sep 2019US 2019/0277914 A1Schaeffler Technologies AG & Co. KG
Most cited
By later US patents
- Method and apparatus for rapidly changing a magnetic field produced by electromagnets164US 6,128,174 AStereotaxis, Inc. · 2000
- Pulsed-energy controllers and methods of operation thereof31US 6,005,763 ASturman Industries, Inc. · 1999
- Solenoid drive circuit30US 4,454,558 AU. S. Philips Corporation · 1984
- DC actuator control circuit with voltage compensation, current control and fast dropout period18US 5,914,849 AKilovac Corporation · 1999
- Free-wheeling circuit18US 8,830,649 B2Siemens Aktiengesellschaft · 2014