B41J 2/04581
Controlling heads based on piezoelectric elements
Official title: {controlling heads based on piezoelectric elements}
B41J2/04581 (Controlling heads based on piezoelectric elements) appears on 3,142 US grants and 3,410 published applications in this corpus.
Search patents in B41J- Granted patents
- 3,142
- Published applications
- 3,410
- Assignees
- 262
- Inventors
- 3,118
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 12 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 11 | 0 |
| 1995 | 11 | 0 |
| 1996 | 13 | 0 |
| 1997 | 14 | 0 |
| 1998 | 30 | 0 |
| 1999 | 29 | 0 |
| 2000 | 59 | 0 |
| 2001 | 84 | 21 |
| 2002 | 91 | 60 |
| 2003 | 53 | 69 |
| 2004 | 80 | 87 |
| 2005 | 47 | 100 |
| 2006 | 41 | 129 |
| 2007 | 74 | 107 |
| 2008 | 82 | 102 |
| 2009 | 92 | 126 |
| 2010 | 94 | 101 |
| 2011 | 95 | 106 |
| 2012 | 119 | 92 |
| 2013 | 88 | 90 |
| 2014 | 131 | 111 |
| 2015 | 142 | 154 |
| 2016 | 138 | 131 |
| 2017 | 134 | 184 |
| 2018 | 133 | 198 |
| 2019 | 179 | 188 |
| 2020 | 182 | 200 |
| 2021 | 151 | 185 |
| 2022 | 142 | 180 |
| 2023 | 117 | 171 |
| 2024 | 151 | 171 |
| 2025 | 137 | 184 |
| 2026 | 122 | 163 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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 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
- Liquid discharge apparatus29 Sep 2026US 12,746,747 B2Seiko Epson Corporation
- Printing device and method for controlling the same8 Oct 2026US 2026/0307384 A1Samsung Display Co., Ltd.
- Drive waveform generator, liquid discharge head, and liquid discharge apparatus8 Oct 2026US 2026/0307386 A1
- Liquid discharge head, liquid discharge apparatus, image forming apparatus, drive circuit, and drive method1 Oct 2026US 2026/0295992 A1Ricoh Company, Ltd.
- Inkjet printing apparatus, control method, and non-transitory computer-readable storage medium storing a program1 Oct 2026US 2026/0295993 A1Konica Minolta, Inc.
- Driving method and liquid discharge apparatus1 Oct 2026US 2026/0295997 A1Seiko Epson Corporation
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 making a thin-film transducer ink jet head180US 5,265,315 ASpectra, Inc. · 1993
- Ink jet printer and ink jet printing method175US 6,328,395 B1Seiko Epson Corporation · 2001
- Piezoelectric ink jet printer using laminated piezoelectric actuator143US 5,402,159 ABrother Kogyo Kabushiki Kaisha · 1995
- Droplet deposition apparatus142US 4,887,100 AAM International, Inc. · 1989