B41J 2002/14338
Multiple pressure elements per ink chamber
Official title: {Multiple pressure elements per ink chamber}
B41J2002/14338 (Multiple pressure elements per ink chamber) appears on 98 US grants and 94 published applications in this corpus.
Search patents in B41J- Granted patents
- 98
- Published applications
- 94
- Assignees
- 34
- Inventors
- 176
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 3 |
| 2009 | 2 | 2 |
| 2010 | 0 | 2 |
| 2011 | 3 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 2 | 5 |
| 2015 | 1 | 2 |
| 2016 | 2 | 2 |
| 2017 | 1 | 3 |
| 2018 | 3 | 7 |
| 2019 | 4 | 3 |
| 2020 | 8 | 16 |
| 2021 | 11 | 15 |
| 2022 | 8 | 9 |
| 2023 | 12 | 11 |
| 2024 | 9 | 3 |
| 2025 | 8 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Liquid discharge head and liquid discharge apparatus7 Jul 2026US 12,673,490 B2Ricoh Company, Ltd.
- Liquid ejecting head and liquid ejecting apparatus23 Sep 2025US 12,420,550 B2Seiko Epson Corporation
- Liquid ejecting apparatus26 Aug 2025US 12,397,553 B2Seiko Epson Corporation
- Liquid ejecting head and liquid ejecting apparatus29 Jul 2025US 12,370,795 B2Seiko Epson Corporation
- Liquid ejecting apparatus22 Jul 2025US 12,365,176 B2Seiko Epson Corporation
- Liquid discharge head and liquid discharge apparatus12 Mar 2026US 2026/0070334 A1
- Liquid Ejecting Head And Liquid Ejecting Apparatus19 Feb 2026US 2026/0048586 A1Seiko Epson Corporation
- Liquid Ejecting Head And Liquid Ejecting Apparatus1 Jan 2026US 2026/0001315 A1Seiko Epson Corporation
- Liquid ejection apparatus and print head22 May 2025US 2025/0162310 A1Seiko Epson Corporation
- Liquid discharge head13 Mar 2025US 2025/0083441 A1Seiko Epson Corporation
Most cited
By later US patents
- Ink droplet expelling apparatus290US 4,672,398 AHitachi Koki Co., Ltd. · 1987
- High density linear array ink jet assembly135US 4,032,929 AXerox Corporation · 1977
- Drop-on-demand ink jet printer capable of directional control of ink drop ejection and method of assembling the printer46US 6,536,873 B1Eastman Kodak Company · 2003
- Inkjet recording apparatus43US 5,912,684 ASeiko Epson Corporation · 1999
- Separable liquid droplet instrument and piezoelectric drivers therefor37US 4,115,789 AXerox Corporation · 1978