F21K 9/69
Details of refractors forming part of the light source
F21K9/69 (Details of refractors forming part of the light source) appears on 507 US grants and 632 published applications in this corpus.
Search patents in F21K- Granted patents
- 507
- Published applications
- 632
- Assignees
- 281
- Inventors
- 981
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 2 | 9 |
| 2006 | 1 | 6 |
| 2007 | 5 | 9 |
| 2008 | 3 | 14 |
| 2009 | 8 | 12 |
| 2010 | 8 | 33 |
| 2011 | 18 | 32 |
| 2012 | 12 | 25 |
| 2013 | 29 | 23 |
| 2014 | 22 | 35 |
| 2015 | 17 | 28 |
| 2016 | 23 | 37 |
| 2017 | 29 | 54 |
| 2018 | 39 | 44 |
| 2019 | 54 | 44 |
| 2020 | 42 | 46 |
| 2021 | 55 | 44 |
| 2022 | 36 | 36 |
| 2023 | 27 | 28 |
| 2024 | 27 | 31 |
| 2025 | 27 | 27 |
| 2026 | 19 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Variable light pipe illumination width levels11 Aug 2026US 12,704,228 B2Flex-N-Gate Advanced Product Development, LLC
- Flexible lighting device and support structure28 Jul 2026US 12,692,993 B2Lumileds Singapore Pte. Ltd.
- Lens for retrofitting a lighting system with LED lights21 Jul 2026US 12,690,120 B2
- Lighting device and vehicle lamp comprising same7 Jul 2026US 12,674,555 B2LG Innotek Co., Ltd.
- Illumination device23 Jun 2026US 12,663,124 B2Seoul Semiconductor Europe GmbH
- Lightbars with emission collecting optical modules8 Oct 2026US 2026/0309310 A1Whelen Engineering Company, Inc.
- Apparatus, method, and system for retrofitting a lighting system with uplighting3 Sep 2026US 2026/0258915 A1Musco Corporation
- Lens for Improved Color Mixing and Beam Control of an LED Light Source27 Aug 2026US 2026/0251285 A1Lutron Technology Company LLC
- Light emitting device27 Aug 2026US 2026/0255744 A1Seoul Semiconductor Co., Ltd.
- Method of controlling serially-connected lighting devices9 Jul 2026US 2026/0194217 A1Lutron Technology Company LLC
Most cited
By later US patents
- Illuminating light source device using semiconductor laser element228US 5,535,230 A1996
- LED device for wide beam generation202US 7,674,018 B2Illumination Management Solutions, Inc. · 2010
- Electric shock resistant L.E.D. based light163US 8,360,599 B2iLumisys, Inc. · 2013
- Solid-state light source144US 6,921,920 B2Smith & Nephew, Inc. · 2005
- Low profile light and accessory kit for the same118US 8,672,518 B2Lighting Science Group Corporation · 2014