B41J 2/04
Generating single droplets or particles on demand
Official title: generating single droplets or particles on demand
B41J2/04 (Generating single droplets or particles on demand) appears on 10,106 US grants and 10,027 published applications in this corpus.
Search patents in B41J- Granted patents
- 10,106
- Published applications
- 10,027
- Assignees
- 704
- Inventors
- 8,588
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 14 | 0 |
| 1982 | 23 | 0 |
| 1983 | 17 | 0 |
| 1984 | 21 | 0 |
| 1985 | 28 | 0 |
| 1986 | 16 | 0 |
| 1987 | 20 | 0 |
| 1988 | 33 | 0 |
| 1989 | 27 | 0 |
| 1990 | 19 | 0 |
| 1991 | 14 | 0 |
| 1992 | 33 | 0 |
| 1993 | 23 | 0 |
| 1994 | 32 | 0 |
| 1995 | 41 | 0 |
| 1996 | 62 | 0 |
| 1997 | 61 | 0 |
| 1998 | 115 | 0 |
| 1999 | 127 | 0 |
| 2000 | 196 | 0 |
| 2001 | 310 | 82 |
| 2002 | 321 | 238 |
| 2003 | 262 | 243 |
| 2004 | 249 | 454 |
| 2005 | 240 | 564 |
| 2006 | 319 | 409 |
| 2007 | 348 | 386 |
| 2008 | 358 | 434 |
| 2009 | 351 | 468 |
| 2010 | 432 | 355 |
| 2011 | 402 | 278 |
| 2012 | 252 | 221 |
| 2013 | 253 | 341 |
| 2014 | 367 | 325 |
| 2015 | 474 | 369 |
| 2016 | 378 | 340 |
| 2017 | 340 | 527 |
| 2018 | 412 | 540 |
| 2019 | 498 | 496 |
| 2020 | 492 | 529 |
| 2021 | 419 | 540 |
| 2022 | 403 | 444 |
| 2023 | 356 | 425 |
| 2024 | 370 | 409 |
| 2025 | 315 | 322 |
| 2026 | 238 | 288 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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.
- Inkjet apparatus and method of aligning the same6 Oct 2026US 12,752,534 B2Samsung Display Co., Ltd.
- Liquid discharge apparatus and liquid discharge method6 Oct 2026US 12,752,536 B2Ricoh Company, Ltd.
- Piezoelectric element, method for manufacturing piezoelectric element, and liquid ejection head6 Oct 2026US 12,757,636 B2Canon Kabushiki Kaisha
- 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
- Drive waveform generator, liquid discharge head, and liquid discharge apparatus8 Oct 2026US 2026/0307386 A1
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
- Ink jet recording method1,590US 4,345,262 ACanon Kabushiki Kaisha · 1982
- Liquid jet recording process and liquid jet recording head1,557US 4,313,124 ACanon Kabushiki Kaisha · 1982