G03B 21/204
Using secondary light emission
Official title: {using secondary light emission, e.g. luminescence or fluorescence (using different colours G03B33/00; if related to video signals H04N9/3197)}
G03B21/204 (Using secondary light emission) appears on 1,774 US grants and 2,217 published applications in this corpus.
Search patents in G03B- Granted patents
- 1,774
- Published applications
- 2,217
- Assignees
- 229
- Inventors
- 1,673
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 6 |
| 2006 | 3 | 11 |
| 2007 | 4 | 10 |
| 2008 | 12 | 9 |
| 2009 | 9 | 11 |
| 2010 | 9 | 24 |
| 2011 | 12 | 45 |
| 2012 | 10 | 73 |
| 2013 | 44 | 121 |
| 2014 | 62 | 94 |
| 2015 | 91 | 122 |
| 2016 | 116 | 135 |
| 2017 | 124 | 155 |
| 2018 | 173 | 189 |
| 2019 | 181 | 224 |
| 2020 | 205 | 221 |
| 2021 | 163 | 175 |
| 2022 | 167 | 197 |
| 2023 | 155 | 148 |
| 2024 | 104 | 112 |
| 2025 | 60 | 76 |
| 2026 | 65 | 58 |
By publication year. 2026 runs to 8 Oct.
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