B41J 2/14
Structure thereof only for on-demand ink jet heads
Official title: Structure thereof {only for on-demand ink jet heads}
B41J2/14 (Structure thereof only for on-demand ink jet heads) appears on 14,903 US grants and 14,471 published applications in this corpus.
Search patents in B41J- Granted patents
- 14,903
- Published applications
- 14,471
- Assignees
- 779
- Inventors
- 9,127
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 7 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 13 | 0 |
| 1981 | 8 | 0 |
| 1982 | 18 | 0 |
| 1983 | 23 | 0 |
| 1984 | 25 | 0 |
| 1985 | 39 | 0 |
| 1986 | 36 | 0 |
| 1987 | 41 | 0 |
| 1988 | 53 | 0 |
| 1989 | 43 | 0 |
| 1990 | 49 | 0 |
| 1991 | 32 | 0 |
| 1992 | 55 | 0 |
| 1993 | 53 | 0 |
| 1994 | 50 | 0 |
| 1995 | 85 | 0 |
| 1996 | 97 | 0 |
| 1997 | 114 | 0 |
| 1998 | 199 | 0 |
| 1999 | 194 | 0 |
| 2000 | 312 | 0 |
| 2001 | 467 | 119 |
| 2002 | 543 | 495 |
| 2003 | 473 | 439 |
| 2004 | 403 | 664 |
| 2005 | 416 | 989 |
| 2006 | 538 | 770 |
| 2007 | 546 | 743 |
| 2008 | 588 | 828 |
| 2009 | 636 | 791 |
| 2010 | 774 | 647 |
| 2011 | 799 | 523 |
| 2012 | 489 | 439 |
| 2013 | 545 | 536 |
| 2014 | 606 | 470 |
| 2015 | 613 | 537 |
| 2016 | 514 | 485 |
| 2017 | 457 | 594 |
| 2018 | 498 | 614 |
| 2019 | 564 | 608 |
| 2020 | 572 | 610 |
| 2021 | 498 | 535 |
| 2022 | 430 | 457 |
| 2023 | 393 | 454 |
| 2024 | 369 | 433 |
| 2025 | 345 | 364 |
| 2026 | 269 | 327 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B41J 2/14201Structure of print heads with piezoelectric elements5,992
- B41J 2/14016Structure of bubble jet print heads5,173
- B41J 2002/14491Electrical connectionIndexing code3,413
- B41J 2002/14419ManifoldIndexing code2,228
- B41J 2/1433Structure of nozzle plates2,103
- B41J 2/14427Structure of ink jet print heads with thermal bend detached actuators1,815
- B41J 2002/14362Assembling elements of headsIndexing code1,707
- B41J 2002/14459Matrix arrangement of the pressure chambersIndexing code1,134
All 25 subgroupsShow fewer
- B41J 2002/14475Characterised by nozzle shapes or number of orifices per chamberIndexing code1,074
- B41J 2002/14387Front shooterIndexing code856
- B41J 2002/14403Including a filterIndexing code853
- B41J 2/14314Structure of ink jet print heads with electrostatically actuated membrane444
- B41J 2002/14379Edge shooterIndexing code413
- B41J 2002/14354Sensor in each pressure chamberIndexing code402
- B41J 2002/14346Ejection by pressure produced by thermal deformation of ink chamberIndexing code331
- B41J 2002/14467Multiple feed channels per ink chamberIndexing code315
- B41J 2002/1437Back shooterIndexing code216
- B41J 2/14008Structure of acoustic ink jet print heads209
- B41J 2002/14411Groove in the nozzle plateIndexing code148
- B41J 2002/14338Multiple pressure elements per ink chamberIndexing code98
- B41J 2002/14322Print head without nozzleIndexing code67
- B41J 2002/14395ElectrowettingIndexing code56
- B41J 2002/14483Separated pressure chamberIndexing code56
- B41J 2/14451Structure of ink jet print heads discharging by lowering surface tension of47
- B41J 2002/14193Movable member in the ink chamberIndexing code18
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Most cited
By later US patents
- Liquid jet recording process and liquid jet recording head1,557US 4,313,124 ACanon Kabushiki Kaisha · 1982
- Liquid jet recording device1,518US 4,459,600 ACanon Kabushiki Kaisha · 1984
- Printhead incorporating a static pagewidth printhead1,463US 7,467,849 B2Silverbrook Research Pty Ltd · 2008
- Ink-belt bubble propulsion printer674US 4,608,577 AElm · 1986
- Heat generating resistor containing tan0.8, substrate provided with said heat generating resistor for liquid jet head, liquid jet head provided with said substrate, and liquid jet apparatus provided with said liquid jet head540US 6,375,312 B1Canon Kabushiki Kaisha · 2002