F21K 9/90
Methods of manufacture
F21K9/90 (Methods of manufacture) appears on 929 US grants and 1,122 published applications in this corpus.
Search patents in F21K- Granted patents
- 929
- Published applications
- 1,122
- Assignees
- 418
- Inventors
- 1,720
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 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 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 3 |
| 2003 | 6 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 10 |
| 2006 | 4 | 3 |
| 2007 | 4 | 4 |
| 2008 | 4 | 7 |
| 2009 | 4 | 10 |
| 2010 | 5 | 13 |
| 2011 | 8 | 23 |
| 2012 | 16 | 68 |
| 2013 | 26 | 74 |
| 2014 | 52 | 118 |
| 2015 | 86 | 147 |
| 2016 | 91 | 104 |
| 2017 | 95 | 89 |
| 2018 | 100 | 108 |
| 2019 | 112 | 87 |
| 2020 | 86 | 81 |
| 2021 | 74 | 63 |
| 2022 | 54 | 37 |
| 2023 | 40 | 19 |
| 2024 | 35 | 28 |
| 2025 | 15 | 10 |
| 2026 | 8 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Emitter assembly for a lighting device6 Oct 2026US 12,753,886 B2Lutron Technology Company LLC
- Sealing a lighting fixture with dry gas8 Sep 2026US 12,729,846 B2Metro Marine LLC
- Light-emitting diode package structure and manufacturing method thereof25 Aug 2026US 12,720,938 B2E Ink Holdings Inc.
- LED light bulb and manufacturing process thereof11 Aug 2026US 12,707,789 B2Linhai Tian Tian Lighting Co., Ltd.
- Production process of white coated LED filament23 Jun 2026US 12,663,123 B2Zhongshan Mulinsen Electronics Co., Ltd.
- Luminaire with optical structure6 Aug 2026US 2026/0227054 A1Signify Holding B. V.
- A filament lamp30 Jul 2026US 2026/0218861 A1Signify Holding B. V.
- Method for using white light source, and white light source18 Jun 2026US 2026/0168632 A1Seoul Semiconductor Co., Ltd.
- Led filament11 Jun 2026US 2026/0160393 A1Signify Holding B. V.
- Planar light source and the method of manufacturing the same7 May 2026US 2026/0126154 A1Nichia Corporation
Most cited
By later US patents
- LED beacon light704US 5,806,965 AR & M Deese Inc. · 1998
- Non-incandescent lightbulb package using light emitting diodes347US 6,504,301 B1Lumileds Lighting U.S., LLC · 2003
- Light tube and power supply circuit300US 7,049,761 B2Altair Engineering, Inc. · 2006
- LED lighting device for replacing fluorescent tubes268US 7,510,299 B2Altair Engineering, Inc. · 2009
- Flexible substrate mounted solid-state light sources for use in line current lamp sockets264US 6,580,228 B1Light Sciences Corporation · 2003