F21K 9/233
Specially adapted for generating a spot light distribution
Official title: specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
F21K9/233 (Specially adapted for generating a spot light distribution) appears on 622 US grants and 757 published applications in this corpus.
Search patents in F21K- Granted patents
- 622
- Published applications
- 757
- Assignees
- 276
- Inventors
- 1,024
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 4 |
| 2003 | 2 | 4 |
| 2004 | 5 | 7 |
| 2005 | 3 | 13 |
| 2006 | 6 | 6 |
| 2007 | 4 | 19 |
| 2008 | 9 | 19 |
| 2009 | 11 | 30 |
| 2010 | 18 | 46 |
| 2011 | 28 | 67 |
| 2012 | 33 | 63 |
| 2013 | 40 | 49 |
| 2014 | 46 | 54 |
| 2015 | 37 | 40 |
| 2016 | 43 | 37 |
| 2017 | 38 | 28 |
| 2018 | 29 | 31 |
| 2019 | 45 | 60 |
| 2020 | 86 | 55 |
| 2021 | 35 | 32 |
| 2022 | 26 | 28 |
| 2023 | 25 | 19 |
| 2024 | 23 | 22 |
| 2025 | 16 | 16 |
| 2026 | 11 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Lighting system590US 6,234,648 B1U. S. Philips Corporation · 2001
- LED lamp with reflector and multicolor adjuster484US 6,149,283 ARensselaer Polytechnic Institute (RPI) · 2000
- Led lamp477US 6,577,073 B2Matsushita Electric Industrial Co., Ltd. · 2003
- Dimmable LED-based MR16 lighting apparatus and methods431US 7,358,679 B2Philips Solid-State Lighting Solutions, Inc. · 2008
- LED-based modular lamp372US 6,787,999 B2GELcore, LLC · 2004