B41J 2/175
Ink supply systems
Official title: Ink supply systems {; Circuit parts therefor}
B41J2/175 (Ink supply systems) appears on 15,198 US grants and 15,145 published applications in this corpus.
Search patents in B41J- Granted patents
- 15,198
- Published applications
- 15,145
- Assignees
- 1,026
- Inventors
- 12,045
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 10 | 0 |
| 1979 | 6 | 0 |
| 1980 | 10 | 0 |
| 1981 | 8 | 0 |
| 1982 | 15 | 0 |
| 1983 | 18 | 0 |
| 1984 | 23 | 0 |
| 1985 | 19 | 0 |
| 1986 | 40 | 0 |
| 1987 | 42 | 0 |
| 1988 | 33 | 0 |
| 1989 | 33 | 0 |
| 1990 | 35 | 0 |
| 1991 | 36 | 0 |
| 1992 | 43 | 0 |
| 1993 | 42 | 0 |
| 1994 | 45 | 0 |
| 1995 | 72 | 0 |
| 1996 | 106 | 0 |
| 1997 | 135 | 0 |
| 1998 | 206 | 0 |
| 1999 | 249 | 0 |
| 2000 | 325 | 0 |
| 2001 | 488 | 134 |
| 2002 | 381 | 417 |
| 2003 | 357 | 498 |
| 2004 | 450 | 687 |
| 2005 | 400 | 998 |
| 2006 | 583 | 667 |
| 2007 | 579 | 748 |
| 2008 | 627 | 833 |
| 2009 | 508 | 835 |
| 2010 | 707 | 659 |
| 2011 | 850 | 612 |
| 2012 | 607 | 450 |
| 2013 | 644 | 550 |
| 2014 | 593 | 461 |
| 2015 | 580 | 494 |
| 2016 | 493 | 488 |
| 2017 | 461 | 625 |
| 2018 | 502 | 640 |
| 2019 | 594 | 634 |
| 2020 | 603 | 678 |
| 2021 | 548 | 657 |
| 2022 | 517 | 539 |
| 2023 | 483 | 541 |
| 2024 | 377 | 494 |
| 2025 | 416 | 463 |
| 2026 | 289 | 343 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Liquid ejection head, manufacturing method for liquid ejection head, and protection tape6 Oct 2026US 12,752,533 B2Canon Kabushiki Kaisha
- Inkjet apparatus and method of aligning the same6 Oct 2026US 12,752,534 B2Samsung Display Co., Ltd.
- Cushioning member and ink supply device6 Oct 2026US 12,752,539 B2KYOCERA Document Solutions Inc.
- Ink refill container6 Oct 2026US 12,752,540 B2Seiko Epson Corporation
- Fluid ejection device assemblies6 Oct 2026US 12,752,541 B2Hewlett-Packard Development Company, L. P.
- Apparatus and method for ink refill of a can decorator8 Oct 2026US 2026/0307393 A1Stolle Machinery Company, LLC
- Inkjet recording apparatus8 Oct 2026US 2026/0307394 A1KYOCERA Document Solutions Inc.
- Inkjet recording apparatus8 Oct 2026US 2026/0307395 A1KYOCERA Document Solutions Inc.
- Liquid ejection head and liquid ejection apparatus8 Oct 2026US 2026/0307396 A1Canon Kabushiki Kaisha
- Electrical device8 Oct 2026US 2026/0307412 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Fluid conduction utilizing a reversible unsaturated siphon with tubarc porosity action1,386US 6,766,817 B2Tubarc Technologies, LLC · 2004
- Irrigation and drainage based on hydrodynamic unsaturated fluid flow961US 6,918,404 B2Tubarc Technologies, LLC · 2005
- Ink refill and recharging system947US 7,066,586 B2Tubarc Technologies, LLC · 2006
- Thermal ink jet pen body construction having improved ink storage and feed capability537US 4,771,295 AHewlett-Packard Company · 1988
- Printhead having memory element475US 5,049,898 AHewlett-Packard Company · 1991