B41J 2/2056
By ink density change
Official title: {by ink density change}
B41J2/2056 (By ink density change) appears on 177 US grants and 138 published applications in this corpus.
Search patents in B41J- Granted patents
- 177
- Published applications
- 138
- Assignees
- 42
- Inventors
- 322
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 13 | 0 |
| 2001 | 17 | 2 |
| 2002 | 8 | 12 |
| 2003 | 12 | 12 |
| 2004 | 11 | 11 |
| 2005 | 5 | 8 |
| 2006 | 8 | 4 |
| 2007 | 10 | 3 |
| 2008 | 3 | 3 |
| 2009 | 2 | 6 |
| 2010 | 3 | 2 |
| 2011 | 4 | 4 |
| 2012 | 1 | 4 |
| 2013 | 3 | 7 |
| 2014 | 7 | 4 |
| 2015 | 11 | 7 |
| 2016 | 2 | 3 |
| 2017 | 4 | 3 |
| 2018 | 4 | 9 |
| 2019 | 7 | 7 |
| 2020 | 8 | 6 |
| 2021 | 5 | 7 |
| 2022 | 3 | 0 |
| 2023 | 2 | 6 |
| 2024 | 3 | 4 |
| 2025 | 4 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mechanism for generating sub range transfer functions15 Sep 2026US 12,734,823 B2Ricoh Company, Ltd.
- Printing apparatus, control method, and storage medium20 Jan 2026US 12,528,298 B2Canon Kabushiki Kaisha
- Printing systems for generating optimized images23 Dec 2025US 12,502,895 B2Hewlett-Packard Development Company, L. P.
- Print apparatus, control method of the same, printhead, and print system12 Aug 2025US 12,384,165 B2Canon Kabushiki Kaisha
- Density unevenness correction data creation method, density unevenness correction data creation apparatus, printing system, program, test chart, and test chart data creation apparatus5 Aug 2025US 12,377,660 B2FUJIFILM Corporation
- Apparatus1 Oct 2026US 2026/0299478 A1FUJIFILM Business Innovation Corp.
- Image processing apparatus, image processing method, and non-transitory recording medium24 Sep 2026US 2026/0285055 A1Ricoh Company, Ltd.
- Mechanism for generating sub range transfer functions4 Sep 2025US 2025/0276532 A1Ricoh Company, Ltd.
- Ejection amount upper limit value determination method and printing device13 Mar 2025US 2025/0083454 A1Seiko Epson Corporation
- Printing systems for generating optimized images7 Nov 2024US 2024/0367443 A1Hewlett-Packard Development Company, L. P.
Most cited
By later US patents
- Method for refilling liquid into a liquid reservoir container, a liquid jet recording apparatus using such method, a liquid refilling container, a liquid reservoir container, and a head cartridge128US 6,022,102 ACanon Kabushiki Kaisha · 2000
- Ink cartridge and printer using the same76US 6,565,198 B2Seiko Epson Corporation · 2003
- Intermediate gradient image producing method73US 4,635,078 ACanon Kabushiki Kaisha · 1987
- Ink jet recording by superimposing inks of different densities67US 5,984,449 ACanon Kabushiki Kaisha · 1999
- Ink cartridge and a printing device using the ink cartridge66US 6,086,193 ASeiko Epson Corporation · 2000