H04N 1/626
Detection of non-electronic marks
Official title: {Detection of non-electronic marks, e.g. fluorescent markers}
H04N1/626 (Detection of non-electronic marks) appears on 67 US grants and 52 published applications in this corpus.
Search patents in H04N- Granted patents
- 67
- Published applications
- 52
- Assignees
- 32
- Inventors
- 135
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 2 | 2 |
| 2014 | 2 | 2 |
| 2015 | 3 | 4 |
| 2016 | 1 | 3 |
| 2017 | 4 | 3 |
| 2018 | 1 | 6 |
| 2019 | 4 | 1 |
| 2020 | 8 | 3 |
| 2021 | 2 | 3 |
| 2022 | 5 | 5 |
| 2023 | 5 | 6 |
| 2024 | 2 | 2 |
| 2025 | 2 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Image processing apparatus and image forming apparatus2 Jun 2026US 12,645,867 B2KYOCERA Document Solutions Inc.
- Color adjustments of highlighted areas2 Jun 2026US 12,646,282 B2Hewlett-Packard Development Company, L. P.
- Information processing apparatus, computer program product, and method using readable information for spot color designation in document data30 Dec 2025US 12,513,255 B2FUJIFILM Business Innovation Corp.
- Image processing apparatus, image processing method, and program for determining color information of an image22 Jul 2025US 12,368,811 B2Sony Group Corporation
- Image processing apparatus, scanner, image forming apparatus, data management system, and image processing method13 Aug 2024US 12,063,337 B2Ricoh Company, Ltd.
- Copy Detection Using Line Art Features and Encoded Signals1 Jan 2026US 2026/0006142 A1
- Image reading apparatus24 Jul 2025US 2025/0240375 A1KYOCERA Document Solutions Inc.
- Information processing apparatus, non-transitory computer readable medium storing computer program, and information processing method15 Feb 2024US 2024/0056546 A1FUJIFILM Business Innovation Corp.
- Feature extractions to optimize scanned images15 Feb 2024US 2024/0056547 A1Hewlett-Packard Development Company, L. P.
- Image processing apparatus and image forming apparatus7 Dec 2023US 2023/0394228 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Marker dot detecting device for color image recording apparatus146US 5,363,212 AFuji Xerox Co., Ltd. · 1994
- Method and apparatus for highlighting nested information areas for selective editing53US 5,138,465 AEastman Kodak Company · 1992
- Spot color application in printer device44US 7,239,402 B2Hewlett-Packard Development Company, L. P. · 2007
- Color image processing device having ability to process and record an outside or inside region enclosed with a color marker36US 4,937,662 AKonica Corporation · 1990
- Image processing apparatus capable of detecting marked region34US 5,216,498 AKonica Corporation · 1993