B41J 2/451
Special optical means therefor
Official title: {Special optical means therefor, e.g. lenses, mirrors, focusing means}
B41J2/451 (Special optical means therefor) appears on 386 US grants and 329 published applications in this corpus.
Search patents in B41J- Granted patents
- 386
- Published applications
- 329
- Assignees
- 116
- Inventors
- 633
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 10 | 0 |
| 1997 | 9 | 0 |
| 1998 | 11 | 0 |
| 1999 | 17 | 0 |
| 2000 | 10 | 0 |
| 2001 | 17 | 7 |
| 2002 | 26 | 28 |
| 2003 | 17 | 11 |
| 2004 | 19 | 22 |
| 2005 | 12 | 14 |
| 2006 | 12 | 22 |
| 2007 | 10 | 10 |
| 2008 | 10 | 20 |
| 2009 | 6 | 33 |
| 2010 | 21 | 39 |
| 2011 | 30 | 26 |
| 2012 | 24 | 12 |
| 2013 | 13 | 7 |
| 2014 | 8 | 3 |
| 2015 | 10 | 12 |
| 2016 | 10 | 7 |
| 2017 | 7 | 8 |
| 2018 | 7 | 9 |
| 2019 | 6 | 2 |
| 2020 | 7 | 5 |
| 2021 | 3 | 6 |
| 2022 | 4 | 5 |
| 2023 | 3 | 5 |
| 2024 | 4 | 4 |
| 2025 | 2 | 7 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 3D package for semiconductor thermal management2 Jun 2026US 12,643,333 B2Genesee Valley Innovations, LLC
- Exposure head and image forming apparatus17 Mar 2026US 12,578,668 B2Canon Kabushiki Kaisha
- Imaging device and imaging method thereof, and printer13 Jan 2026US 12,523,946 B2Faith Billion Technology Development Limited
- Polygon mirror6 Jan 2026US 12,515,460 B2Canon Kabushiki Kaisha
- Controlling exposure apparatus used in image forming apparatus30 Dec 2025US 12,510,840 B2Canon Kabushiki Kaisha
- 3d package for semiconductor thermal management17 Sep 2026US 2026/0273956 A1Genesee Valley Innovations, LLC
- Exposure head and image forming apparatus25 Jun 2026US 2026/0177942 A1Canon Kabushiki Kaisha
- System and method for hollow vessel printing12 Mar 2026US 2026/0070349 A1Ink Cups Now LLC.
- Exposure device and image forming apparatus5 Mar 2026US 2026/0064028 A1Sharp Kabushiki Kaisha
- Print head and image forming apparatus1 Jan 2026US 2026/0003303 A1Sharp Kabushiki Kaisha
Most cited
By later US patents
- Light modulator with a laser or laser array for exposing image data166US 5,521,748 AEastman Kodak Company · 1996
- Edge emitting type light emitting diode array heads136US 5,606,181 ARicoh Company, Ltd. · 1997
- Method for laser-discharge imaging a printing plate135US 5,351,617 APresstek, Inc. · 1994
- Laser printer using a fly's eye integrator135US 5,923,475 AEastman Kodak Company · 1999
- Light emitting diode array and optical image forming apparatus with light emitting diode array132US 5,838,024 ARicoh Company, Ltd. · 1998