B41J 2/04541
Specific driving circuit
Official title: {Specific driving circuit}
B41J2/04541 (Specific driving circuit) appears on 2,861 US grants and 2,896 published applications in this corpus.
Search patents in B41J- Granted patents
- 2,861
- Published applications
- 2,896
- Assignees
- 219
- Inventors
- 2,159
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 13 | 0 |
| 1993 | 10 | 0 |
| 1994 | 11 | 0 |
| 1995 | 8 | 0 |
| 1996 | 19 | 0 |
| 1997 | 18 | 0 |
| 1998 | 39 | 0 |
| 1999 | 31 | 0 |
| 2000 | 57 | 0 |
| 2001 | 82 | 21 |
| 2002 | 90 | 67 |
| 2003 | 68 | 63 |
| 2004 | 75 | 110 |
| 2005 | 72 | 208 |
| 2006 | 91 | 120 |
| 2007 | 85 | 109 |
| 2008 | 129 | 184 |
| 2009 | 117 | 142 |
| 2010 | 175 | 116 |
| 2011 | 135 | 56 |
| 2012 | 67 | 56 |
| 2013 | 57 | 54 |
| 2014 | 81 | 62 |
| 2015 | 93 | 93 |
| 2016 | 89 | 104 |
| 2017 | 104 | 168 |
| 2018 | 134 | 146 |
| 2019 | 135 | 119 |
| 2020 | 118 | 137 |
| 2021 | 103 | 169 |
| 2022 | 129 | 146 |
| 2023 | 97 | 128 |
| 2024 | 118 | 123 |
| 2025 | 102 | 94 |
| 2026 | 70 | 101 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Printing Apparatus1 Oct 2026US 2026/0295996 A1Seiko Epson Corporation
- Liquid ejection head and liquid ejection device1 Oct 2026US 2026/0296005 A1RISO Technologies Corporation
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- Head Unit And Liquid Ejecting Apparatus1 Oct 2026US 2026/0296007 A1Seiko Epson Corporation
Most cited
By later US patents
- Droplet generating method and apparatus thereof1,847US 4,463,359 ACanon Kabushiki Kaisha · 1984
- Integrated circuit printhead for an ink jet printer including an integrated identification circuit238US 5,363,134 AHewlett-Packard Company · 1994
- Printhead assembly for an ink jet printer236US 6,652,082 B2Silverbrook Research Pty Ltd · 2003
- Ink jet printer and ink jet printing method175US 6,328,395 B1Seiko Epson Corporation · 2001
- Method and system for detecting nonfunctional elements in an ink jet printer162US 6,199,969 B1Encad, Inc. · 2001