H05B 41/38
Controlling the intensity of light
H05B41/38 (Controlling the intensity of light) appears on 2,581 US grants and 1,563 published applications in this corpus.
Search patents in H05B- Granted patents
- 2,581
- Published applications
- 1,563
- Assignees
- 874
- Inventors
- 3,325
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 14 | 0 |
| 1978 | 10 | 0 |
| 1979 | 18 | 0 |
| 1980 | 23 | 0 |
| 1981 | 14 | 0 |
| 1982 | 19 | 0 |
| 1983 | 26 | 0 |
| 1984 | 23 | 0 |
| 1985 | 35 | 0 |
| 1986 | 18 | 0 |
| 1987 | 24 | 0 |
| 1988 | 23 | 0 |
| 1989 | 31 | 0 |
| 1990 | 46 | 0 |
| 1991 | 70 | 0 |
| 1992 | 53 | 0 |
| 1993 | 46 | 0 |
| 1994 | 38 | 0 |
| 1995 | 69 | 0 |
| 1996 | 72 | 0 |
| 1997 | 55 | 0 |
| 1998 | 88 | 0 |
| 1999 | 81 | 0 |
| 2000 | 118 | 0 |
| 2001 | 113 | 12 |
| 2002 | 98 | 99 |
| 2003 | 99 | 89 |
| 2004 | 86 | 99 |
| 2005 | 76 | 121 |
| 2006 | 96 | 125 |
| 2007 | 79 | 98 |
| 2008 | 99 | 130 |
| 2009 | 65 | 125 |
| 2010 | 84 | 141 |
| 2011 | 94 | 91 |
| 2012 | 115 | 62 |
| 2013 | 89 | 64 |
| 2014 | 68 | 59 |
| 2015 | 56 | 46 |
| 2016 | 51 | 37 |
| 2017 | 35 | 36 |
| 2018 | 36 | 21 |
| 2019 | 28 | 33 |
| 2020 | 26 | 22 |
| 2021 | 15 | 14 |
| 2022 | 13 | 14 |
| 2023 | 13 | 14 |
| 2024 | 9 | 4 |
| 2025 | 5 | 5 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Heat treatment apparatus for heating substrate by light irradiation15 Sep 2026US 12,739,952 B2SCREEN Holdings Co., Ltd.
- Controlling groups of electrical loads16 Jun 2026US 12,660,069 B2Lutron Technology Company LLC
- Method for operating a discharge lamp and discharge lamp9 Jun 2026US 12,650,637 B2OSRAM GmbH
- Electronic devices for controlling lights3 Mar 2026US 12,568,570 B1Amazon Technologies, Inc.
- Load control device for high-efficiency loads22 Jul 2025US 12,369,233 B2Lutron Technology Company LLC
- Controlling groups of electrical loads24 Sep 2026US 2026/0292961 A1Lutron Technology Company LLC
- Methods and apparatus for thermal processing of materials4 Jun 2026US 2026/0151793 A1PulseForge Inc.
- Load Control Device for High-Efficiency Loads9 Oct 2025US 2025/0318027 A1Lutron Technology Company LLC
- Intense pulse light (ipl) apparatus utilizing a pulse forming network (pfn)22 May 2025US 2025/0161708 A1
- Load control device having a closed-loop gate drive circuit including overcurrent protection22 May 2025US 2025/0167666 A1Lutron Technology Company LLC
Most cited
By later US patents
- Universal ballast control circuit611US 6,137,240 ALumion Corporation · 2000
- Electronic ballast system528US 4,414,492 AIntent Patent A.G. · 1983
- Methods and systems for dimmable fluorescent lighting using multiple frequencies524US 8,138,676 B22012
- Network based multiple sensor and control device with temperature sensing and control499US 6,798,341 B1Leviton Manufacturing Co., Inc. · 2004
- Energy management control system354US 5,962,989 ANegawatt Technologies Inc. · 1999