H04N 1/02855
In combination with a light guide
Official title: {in combination with a light guide, e.g. optical fibre, glass plate (light-guides per se G02B6/00)}
H04N1/02855 (In combination with a light guide) appears on 154 US grants and 139 published applications in this corpus.
Search patents in H04N- Granted patents
- 154
- Published applications
- 139
- Assignees
- 56
- Inventors
- 241
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 4 |
| 2003 | 2 | 2 |
| 2004 | 4 | 5 |
| 2005 | 1 | 5 |
| 2006 | 4 | 5 |
| 2007 | 2 | 0 |
| 2008 | 1 | 4 |
| 2009 | 3 | 6 |
| 2010 | 6 | 9 |
| 2011 | 5 | 17 |
| 2012 | 4 | 5 |
| 2013 | 17 | 19 |
| 2014 | 19 | 9 |
| 2015 | 13 | 8 |
| 2016 | 8 | 8 |
| 2017 | 12 | 10 |
| 2018 | 7 | 4 |
| 2019 | 5 | 7 |
| 2020 | 6 | 3 |
| 2021 | 3 | 1 |
| 2022 | 1 | 2 |
| 2023 | 1 | 2 |
| 2024 | 1 | 1 |
| 2025 | 0 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Diffusing member, illuminating device, image reading apparatus, and image forming apparatus to improve diffusivity of light with suppressing a decrease of incident light on an illuminated region of an original16 Jun 2026US 12,656,552 B2Canon Kabushiki Kaisha
- Image reading apparatus and image forming apparatus24 Dec 2024US 12,177,402 B2Canon Kabushiki Kaisha
- Image reading apparatus and method of creating correction data28 Nov 2023US 11,831,831 B2Seiko Epson Corporation
- Illumination device and image reading device16 Aug 2022US 11,418,673 B2Mitsubishi Electric Corporation
- Image reading device24 Aug 2021US 11,102,369 B2Mitsubishi Electric Corporation
- Image reading apparatus and image forming apparatus20 Nov 2025US 2025/0358378 A1Canon Kabushiki Kaisha
- Image reading apparatus24 Jul 2025US 2025/0240375 A1KYOCERA Document Solutions Inc.
- Light guide, illumination device, and contact image sensor8 May 2025US 2025/0150543 A1Nippon Sheet Glass Co., Ltd.
- Diffusing member, illuminating device, image reading apparatus, and image forming apparatus28 Mar 2024US 2024/0103222 A1Canon Kabushiki Kaisha
- Image reading apparatus and method of creating correction data31 Aug 2023US 2023/0276008 A1Seiko Epson Corporation
Most cited
By later US patents
- Light source assembly for scanning devices utilizing light emitting diodes114US 6,139,174 AHewlett-Packard Company · 2000
- Image sensor unit and image reading apparatus having the unit110US 4,783,700 ACanon Kabushiki Kaisha · 1988
- Light source58US 5,128,846 AInternational Business Machines Corporation · 1992
- Palm top image scanner back lighting device56US 5,764,493 A1998
- Planar light source and image reading device41US 5,781,311 ANikon Corporation · 1998