H01F 2007/1888
Using pulse width modulation
Official title: {using pulse width modulation}
H01F2007/1888 (Using pulse width modulation) appears on 102 US grants and 126 published applications in this corpus.
Search patents in H01F- Granted patents
- 102
- Published applications
- 126
- Assignees
- 90
- Inventors
- 272
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 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 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 3 |
| 2005 | 3 | 6 |
| 2006 | 3 | 1 |
| 2007 | 3 | 6 |
| 2008 | 1 | 2 |
| 2009 | 2 | 14 |
| 2010 | 4 | 2 |
| 2011 | 5 | 5 |
| 2012 | 3 | 2 |
| 2013 | 1 | 2 |
| 2014 | 4 | 1 |
| 2015 | 3 | 4 |
| 2016 | 2 | 2 |
| 2017 | 3 | 7 |
| 2018 | 2 | 8 |
| 2019 | 9 | 6 |
| 2020 | 6 | 11 |
| 2021 | 8 | 15 |
| 2022 | 9 | 10 |
| 2023 | 10 | 8 |
| 2024 | 11 | 5 |
| 2025 | 7 | 3 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Electromagnetic operating device44US 6,968,859 B1Yuken Kogyo Kabushiki Kaisha · 2005
- Solenoid valve driving circuit and solenoid valve31US 7,903,383 B2SMC Corporation · 2011
- Method to adaptively control and derive the control voltage of solenoid operated valves based on the valve closure point18US 6,889,121 B1Woodward Governor Company · 2005
- Control means for controlling the energy provided to the injector valves of an electrically controlled fuel system16US 4,417,201 AThe Bendix Corporation · 1983
- Medical fluid machine having solenoid control system with reduced hold current16US 7,782,590 B2Baxter Healthcare S. A. · 2010