H04N 1/0075
Detecting a change in reflectivity
Official title: {Detecting a change in reflectivity}
H04N1/0075 (Detecting a change in reflectivity) appears on 225 US grants and 170 published applications in this corpus.
Search patents in H04N- Granted patents
- 225
- Published applications
- 170
- Assignees
- 80
- Inventors
- 484
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 1 |
| 2002 | 4 | 6 |
| 2003 | 2 | 5 |
| 2004 | 3 | 7 |
| 2005 | 3 | 7 |
| 2006 | 6 | 6 |
| 2007 | 1 | 12 |
| 2008 | 8 | 5 |
| 2009 | 5 | 11 |
| 2010 | 10 | 9 |
| 2011 | 6 | 13 |
| 2012 | 11 | 11 |
| 2013 | 13 | 7 |
| 2014 | 12 | 8 |
| 2015 | 10 | 3 |
| 2016 | 11 | 8 |
| 2017 | 7 | 8 |
| 2018 | 5 | 11 |
| 2019 | 8 | 6 |
| 2020 | 10 | 9 |
| 2021 | 6 | 5 |
| 2022 | 4 | 3 |
| 2023 | 4 | 5 |
| 2024 | 1 | 2 |
| 2025 | 1 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Image reading device and image reading method25 Aug 2026US 12,719,995 B2Ricoh Company, Ltd.
- Taiwan image processing apparatus having image capturing member16 Jun 2026US 12,656,717 B2FUJIFILM Business Innovation Corp.
- Document reading device and image forming apparatus10 Jun 2025US 12,328,420 B2FUJIFILM Business Innovation Corp.
- Image processing system9 Jan 2024US 11,870,960 B2KYOCERA Document Solutions Inc.
- Document placement detecting device, image reading device, image forming apparatus, method, and non-transitory recording medium5 Dec 2023US 11,838,467 B2Ricoh Company, Ltd.
- Image scanning apparatus14 May 2026US 2026/0135961 A1KYOCERA Document Solutions Inc.
- Image processing device, image forming apparatus, image processing method, and non-transitory computer-readable medium26 Feb 2026US 2026/0057528 A1Ricoh Company, Ltd.
- Image reading device and image reading method5 Dec 2024US 2024/0406325 A1Ricoh Company, Ltd.
- Optical device and image reading device14 Mar 2024US 2024/0089389 A1FUJIFILM Business Innovation Corp.
- Document placement detecting device, image reading device, image forming apparatus, method, and non-transitory recording medium7 Sep 2023US 2023/0283726 A1Ricoh Company, Ltd.
Most cited
By later US patents
- Image read device and copier1,024US 8,599,450 B2Ricoh Company, Ltd. · 2013
- Two dimensional object position sensor145US 6,476,376 B1Xerox Corporation · 2002
- Method of auto-cropping images for scanners94US 5,880,858 AMustek Systems Inc. · 1999
- Document detection apparatus67US 5,384,621 AXerox Corporation · 1995
- Method and apparatus for document skew and size/shape detection58US 5,818,976 AVisioneer, Inc. · 1998