B41J 2002/17573
Using optical means for ink level indication
Official title: {using optical means for ink level indication}
B41J2002/17573 (Using optical means for ink level indication) appears on 532 US grants and 505 published applications in this corpus.
Search patents in B41J- Granted patents
- 532
- Published applications
- 505
- Assignees
- 56
- Inventors
- 651
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 8 | 0 |
| 1998 | 15 | 0 |
| 1999 | 15 | 0 |
| 2000 | 13 | 0 |
| 2001 | 17 | 7 |
| 2002 | 14 | 16 |
| 2003 | 10 | 8 |
| 2004 | 8 | 7 |
| 2005 | 10 | 11 |
| 2006 | 11 | 11 |
| 2007 | 11 | 13 |
| 2008 | 8 | 11 |
| 2009 | 6 | 11 |
| 2010 | 9 | 7 |
| 2011 | 12 | 8 |
| 2012 | 10 | 7 |
| 2013 | 9 | 15 |
| 2014 | 16 | 4 |
| 2015 | 10 | 6 |
| 2016 | 5 | 7 |
| 2017 | 10 | 22 |
| 2018 | 13 | 40 |
| 2019 | 39 | 55 |
| 2020 | 53 | 60 |
| 2021 | 51 | 41 |
| 2022 | 35 | 40 |
| 2023 | 43 | 43 |
| 2024 | 28 | 19 |
| 2025 | 24 | 21 |
| 2026 | 8 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus for supplying ink, and inkjet printing system including the same29 Sep 2026US 12,746,756 B2Ap Systems Inc.
- Tank having first liquid chamber whose portion is positioned rearward of second liquid chamber to increase volume of the first liquid chamber7 Jul 2026US 12,673,499 B2Brother Kogyo Kabushiki Kaisha
- Liquid ejecting device and liquid reservoir to increase volume ratio of stored liquid30 Jun 2026US 12,668,065 B2Brother Kogyo Kabushiki Kaisha
- Image-forming apparatus including recording head connectable to liquid container through joint, a plurality of liquid channels, and a plurality of tubes23 Jun 2026US 12,661,900 B2Brother Kogyo Kabushiki Kaisha
- Transparent member and liquid ejection apparatus16 Jun 2026US 12,654,461 B2Canon Kabushiki Kaisha
- Image-forming apparatus including recording head connectable to liquid container through joint, a plurality of liquid channels, and a plurality of tubes24 Sep 2026US 2026/0285050 A1Brother Kogyo Kabushiki Kaisha
- Recording apparatus and control method thereof13 Aug 2026US 2026/0233528 A1Seiko Epson Corporation
- Ink bottle including seal member having first and second holes arranged adjacent to each other and nozzle in communication with the first hole, and system including the ink bottle and ink tank6 Aug 2026US 2026/0225368 A1Brother Kogyo Kabushiki Kaisha
- Liquid consuming device including first and second chambers with visually distinguishable volume difference6 Aug 2026US 2026/0225371 A1Brother Kogyo Kabushiki Kaisha
- Residual amount management device outputting information for guiding supply of printing consumable into tank6 Aug 2026US 2026/0225372 A1Brother Kogyo Kabushiki Kaisha
Most cited
By later US patents
- Apparatus controlled by data from consumable parts with incorporated memory devices266US 5,812,156 AHewlett-Packard Company · 1998
- Method and apparatus for replenishing an ink cartridge171US 5,280,300 AHewlett-Packard Company · 1994
- Replaceable ink cartridge150US 5,509,140 ACanon Kabushiki Kaisha · 1996
- Ink-jet recording apparatus128US 4,604,633 AKonishiroku Photo Industry Co., Ltd. · 1986
- System for registration of a fluid level in a receptacle128US 6,554,381 B2Pelikan Produktions AG · 2003