B41J 2/01
Ink jet
B41J2/01 (Ink jet) appears on 46,256 US grants and 44,936 published applications in this corpus.
Search patents in B41J- Granted patents
- 46,256
- Published applications
- 44,936
- Assignees
- 2,377
- Inventors
- 28,242
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 55 | 0 |
| 1977 | 72 | 0 |
| 1978 | 72 | 0 |
| 1979 | 42 | 0 |
| 1980 | 84 | 0 |
| 1981 | 96 | 0 |
| 1982 | 126 | 0 |
| 1983 | 138 | 0 |
| 1984 | 109 | 0 |
| 1985 | 167 | 0 |
| 1986 | 161 | 0 |
| 1987 | 154 | 0 |
| 1988 | 159 | 0 |
| 1989 | 171 | 0 |
| 1990 | 175 | 0 |
| 1991 | 142 | 0 |
| 1992 | 184 | 0 |
| 1993 | 180 | 0 |
| 1994 | 179 | 0 |
| 1995 | 301 | 0 |
| 1996 | 367 | 0 |
| 1997 | 418 | 0 |
| 1998 | 665 | 0 |
| 1999 | 732 | 0 |
| 2000 | 1039 | 0 |
| 2001 | 1374 | 373 |
| 2002 | 1497 | 1398 |
| 2003 | 1380 | 1434 |
| 2004 | 1242 | 1827 |
| 2005 | 1105 | 2396 |
| 2006 | 1352 | 2029 |
| 2007 | 1457 | 2071 |
| 2008 | 1544 | 2132 |
| 2009 | 1472 | 2241 |
| 2010 | 1925 | 1869 |
| 2011 | 1984 | 1792 |
| 2012 | 1676 | 1593 |
| 2013 | 1840 | 1750 |
| 2014 | 2081 | 1627 |
| 2015 | 2068 | 1701 |
| 2016 | 1743 | 1698 |
| 2017 | 1586 | 2054 |
| 2018 | 1574 | 1985 |
| 2019 | 1868 | 1882 |
| 2020 | 1791 | 1999 |
| 2021 | 1538 | 1885 |
| 2022 | 1431 | 1656 |
| 2023 | 1336 | 1563 |
| 2024 | 1258 | 1567 |
| 2025 | 1218 | 1341 |
| 2026 | 928 | 1073 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B41J 2/135Nozzles24,066
- B41J 2/17Characterised by ink handling17,065
- B41J 2/015Characterised by the jet generation process10,829
- B41J 2/21For multi-colour printing7,154
- B41J 2/07Characterised by jet control1,572
- B41J 2/205For printing a discrete number of tones580
- B41J 2002/012With intermediate transfer memberIndexing code430
Recent patents
- Drive circuit board and liquid ejection apparatus6 Oct 2026US 12,752,527 B2Seiko Epson Corporation
- Liquid ejection apparatus, recording medium, and liquid ejection head6 Oct 2026US 12,752,528 B2Konica Minolta, Inc.
- Ink jet recording method and ink jet recording apparatus6 Oct 2026US 12,752,529 B2Canon Kabushiki Kaisha
- Liquid discharge head and liquid discharge device6 Oct 2026US 12,752,530 B2RISO Technologies Corporation
- Liquid discharge head and liquid discharge apparatus6 Oct 2026US 12,752,531 B2Ricoh Company, Ltd.
- Printed documents readily identifying indicia printing defects8 Oct 2026US 2026/0306937 A1Brightstar Global Solutions Corporation
- Drive waveform generator, liquid discharge head, liquid discharge apparatus, manufacturing apparatus for display devices, and method of manufacturing display devices8 Oct 2026US 2026/0307382 A1
- Liquid discharge head substrate, liquid discharge head, and liquid discharge apparatus8 Oct 2026US 2026/0307383 A1Canon Kabushiki Kaisha
- Printing device and method for controlling the same8 Oct 2026US 2026/0307384 A1Samsung Display Co., Ltd.
- Printing apparatus, control method, and storage medium8 Oct 2026US 2026/0307385 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Bubble jet recording method and apparatus in which a heating element generates bubbles in a liquid flow path to project droplets2,047US 4,723,129 ACanon Kabushiki Kaisha · 1988
- Droplet generating method and apparatus thereof1,847US 4,463,359 ACanon Kabushiki Kaisha · 1984
- Bubble jet recording method and apparatus in which a heating element generates bubbles in multiple liquid flow paths to project droplets1,733US 4,740,796 ACanon Kabushiki Kaisha · 1988
- Liquid jet recording head1,616US 4,558,333 ACanon Kabushiki Kaisha · 1985
- Ink jet recording method1,590US 4,345,262 ACanon Kabushiki Kaisha · 1982