H04N 1/6022
Generating a fourth subtractive colour signal
Official title: {Generating a fourth subtractive colour signal, e.g. under colour removal, black masking}
H04N1/6022 (Generating a fourth subtractive colour signal) appears on 693 US grants and 554 published applications in this corpus.
Search patents in H04N- Granted patents
- 693
- Published applications
- 554
- Assignees
- 142
- Inventors
- 964
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 8 | 0 |
| 1991 | 11 | 0 |
| 1992 | 13 | 0 |
| 1993 | 9 | 0 |
| 1994 | 20 | 0 |
| 1995 | 8 | 0 |
| 1996 | 11 | 0 |
| 1997 | 6 | 0 |
| 1998 | 26 | 0 |
| 1999 | 17 | 0 |
| 2000 | 15 | 0 |
| 2001 | 15 | 10 |
| 2002 | 14 | 20 |
| 2003 | 19 | 28 |
| 2004 | 14 | 36 |
| 2005 | 17 | 27 |
| 2006 | 28 | 33 |
| 2007 | 27 | 40 |
| 2008 | 22 | 21 |
| 2009 | 32 | 39 |
| 2010 | 28 | 21 |
| 2011 | 26 | 33 |
| 2012 | 27 | 27 |
| 2013 | 42 | 15 |
| 2014 | 28 | 10 |
| 2015 | 22 | 20 |
| 2016 | 14 | 13 |
| 2017 | 15 | 20 |
| 2018 | 21 | 30 |
| 2019 | 31 | 27 |
| 2020 | 25 | 17 |
| 2021 | 13 | 18 |
| 2022 | 18 | 16 |
| 2023 | 13 | 9 |
| 2024 | 11 | 12 |
| 2025 | 6 | 8 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Non-transitory computer readable storage medium, image processing apparatus, and control method of image processing apparatus for settings for performing printing using spot colors29 Jul 2025US 12,375,617 B2Canon Kabushiki Kaisha
- Method for performing transformations of color data from a source color space to a target color space using a transformation rule TRV15 Jul 2025US 12,363,243 B2GMG GmbH & Co. KG
- Mobile terminal having a light source and an application to extract embedded information from an illuminated printed image and method8 Jul 2025US 12,356,085 B2Canon Kabushiki Kaisha
- Information processing apparatus, information processing method, and storage medium11 Mar 2025US 12,250,358 B2Canon Kabushiki Kaisha
- Image processing apparatus, image processing method, and storage medium to reduce ink application amount11 Feb 2025US 12,225,172 B2Canon Kabushiki Kaisha
- Color conversion method, color conversion device, and non-transitory computer-readable storage medium storing program3 Sep 2026US 2026/0261622 A1Seiko Epson Corporation
- Method and system for calculating color fastness of textile method27 Aug 2026US 2026/0254914 A1Dongguan Fengzhen Testing Equipment Co., Ltd.
- Color patch and printing system25 Jun 2026US 2026/0181099 A1Komori Corporation
- Inkjet printing apparatus, printing method thereof, and image processing apparatus23 Apr 2026US 2026/0113411 A1Canon Kabushiki Kaisha
- Image processing apparatus, method, and storage medium storing program25 Dec 2025US 2025/0392680 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Linear interpolator for color correction246US 4,275,413 A1981
- Color processing system141US 5,243,414 ATektronix, Inc. · 1993
- Color signal network system140US 5,146,328 AFuji Xerox Co., Ltd. · 1992
- Data conversion table changing128US 5,881,211 ADainippon Screen Mfg.Co., Ltd. · 1999
- System for correcting color images using tetrahedral interpolation over a hexagonal lattice125US 5,581,376 AXerox Corporation · 1996