H05B 39/047
With pulse width modulation from a dc power source
Official title: {with pulse width modulation from a DC power source}
H05B39/047 (With pulse width modulation from a dc power source) appears on 122 US grants and 77 published applications in this corpus.
Search patents in H05B- Granted patents
- 122
- Published applications
- 77
- Assignees
- 91
- Inventors
- 220
- Latest grant
- 28 Mar 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 1 |
| 2002 | 10 | 4 |
| 2003 | 5 | 8 |
| 2004 | 7 | 5 |
| 2005 | 5 | 7 |
| 2006 | 5 | 4 |
| 2007 | 3 | 6 |
| 2008 | 4 | 11 |
| 2009 | 4 | 5 |
| 2010 | 4 | 5 |
| 2011 | 7 | 3 |
| 2012 | 4 | 1 |
| 2013 | 3 | 1 |
| 2014 | 3 | 3 |
| 2015 | 4 | 4 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 2 | 1 |
| 2020 | 1 | 4 |
| 2021 | 4 | 2 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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- Pixel diagnostics with a bypass mode19 Aug 2021US 2021/0256896 A1Lumileds LLC
- Controller for controlling light source module28 Jan 2021US 2021/0029788 A1O2Micro, Inc.
- Dimming circuit and lighting device30 Apr 2020US 2020/0137849 A1Wenzhou MTLC Electric Appliances Co., Ltd.
- Alternating current (ac) dimming and emergency power supply method and device2 Apr 2020US 2020/0107416 A1
- Pixel diagnostics with a bypass mode12 Mar 2020US 2020/0082749 A1Lumileds Holding B. V.
Most cited
By later US patents
- Intelligent lamp or intelligent contact terminal for a lamp171US 5,592,051 A1997
- Method and apparatus for delivering power to a mechanical or electrical system84US 6,307,358 B1Omachron Technologies, Inc. · 2001
- Incandescent light regulation and intensity controller68US 4,902,958 AProgressive Dynamics, Inc. · 1990
- Bicycle single-wire lighting system with steady-flashing-reflector rear warning device66US 5,015,918 A1991
- Light curing device power control system65US 5,233,283 A1993