B41J 2/14201
Structure of print heads with piezoelectric elements
Official title: {Structure of print heads with piezoelectric elements}
B41J2/14201 (Structure of print heads with piezoelectric elements) appears on 5,992 US grants and 6,323 published applications in this corpus.
Search patents in B41J- Granted patents
- 5,992
- Published applications
- 6,323
- Assignees
- 364
- Inventors
- 4,228
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 1 | 0 |
| 1980 | 10 | 0 |
| 1981 | 4 | 0 |
| 1982 | 7 | 0 |
| 1983 | 18 | 0 |
| 1984 | 15 | 0 |
| 1985 | 20 | 0 |
| 1986 | 13 | 0 |
| 1987 | 14 | 0 |
| 1988 | 12 | 0 |
| 1989 | 5 | 0 |
| 1990 | 11 | 0 |
| 1991 | 8 | 0 |
| 1992 | 9 | 0 |
| 1993 | 13 | 0 |
| 1994 | 11 | 0 |
| 1995 | 25 | 0 |
| 1996 | 31 | 0 |
| 1997 | 43 | 0 |
| 1998 | 63 | 0 |
| 1999 | 64 | 0 |
| 2000 | 86 | 0 |
| 2001 | 96 | 25 |
| 2002 | 113 | 126 |
| 2003 | 100 | 148 |
| 2004 | 118 | 158 |
| 2005 | 108 | 266 |
| 2006 | 120 | 269 |
| 2007 | 151 | 237 |
| 2008 | 154 | 263 |
| 2009 | 241 | 252 |
| 2010 | 256 | 218 |
| 2011 | 244 | 269 |
| 2012 | 208 | 216 |
| 2013 | 261 | 262 |
| 2014 | 319 | 262 |
| 2015 | 307 | 271 |
| 2016 | 270 | 254 |
| 2017 | 229 | 289 |
| 2018 | 267 | 348 |
| 2019 | 291 | 348 |
| 2020 | 320 | 352 |
| 2021 | 278 | 285 |
| 2022 | 253 | 244 |
| 2023 | 204 | 257 |
| 2024 | 202 | 269 |
| 2025 | 224 | 241 |
| 2026 | 161 | 194 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B41J 2/14233Of film type, deformed by bending and disposed on a diaphragm3,548
- B41J 2/14209Of finger type, chamber walls consisting integrally of piezoelectric material1,117
- B41J 2/14274Of stacked structure type, deformed by compression/extension and disposed on a diaphragm854
- B41J 2002/14306Flow passage between manifold and chamberIndexing code631
- B41J 2/14282Of cantilever type70
- B41J 2/1429Of tubular type54
- B41J 2/14298Of disc type47
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.
- 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.
- Piezoelectric element6 Oct 2026US 12,757,637 B2Seiko Epson Corporation
- Liquid ejecting head and liquid ejecting apparatus1 Oct 2026US 2026/0296004 A1Seiko Epson Corporation
- Liquid ejection head and liquid ejection device1 Oct 2026US 2026/0296005 A1RISO Technologies Corporation
- Liquid ejection head and liquid ejection device1 Oct 2026US 2026/0296006 A1RISO Technologies Corporation
- Head Unit And Liquid Ejecting Apparatus1 Oct 2026US 2026/0296007 A1Seiko Epson Corporation
- Channel member, liquid discharge head, liquid discharge apparatus, and three-dimensional fabrication apparatus1 Oct 2026US 2026/0296008 A1
Most cited
By later US patents
- Method and apparatus for recording with writing fluids and drop projection means therefor528US 3,946,398 ASilonics, Inc. · 1976
- Method of forming an electronic device387US 6,503,831 B2Patterning Technologies Limited · 2003
- Ink-jet recording head with piezoelectric device and method for manufacturing the same368US 6,142,615 ASeiko Epson Corporation · 2000
- Ink droplet expelling apparatus290US 4,672,398 AHitachi Koki Co., Ltd. · 1987
- Compensation for aerodynamic influences in ink jet apparatuses having ink jet chambers utilizing a plurality of orifices273US 5,258,774 ADataproducts Corporation · 1993