B41J 2/04561
Detecting presence or properties of a drop in flight
Official title: {detecting presence or properties of a drop in flight}
B41J2/04561 (Detecting presence or properties of a drop in flight) appears on 164 US grants and 186 published applications in this corpus.
Search patents in B41J- Granted patents
- 164
- Published applications
- 186
- Assignees
- 62
- Inventors
- 360
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 4 | 2 |
| 2003 | 2 | 4 |
| 2004 | 4 | 5 |
| 2005 | 5 | 6 |
| 2006 | 1 | 4 |
| 2007 | 1 | 1 |
| 2008 | 6 | 15 |
| 2009 | 2 | 7 |
| 2010 | 3 | 7 |
| 2011 | 7 | 5 |
| 2012 | 7 | 5 |
| 2013 | 5 | 5 |
| 2014 | 7 | 6 |
| 2015 | 9 | 7 |
| 2016 | 9 | 3 |
| 2017 | 12 | 12 |
| 2018 | 4 | 9 |
| 2019 | 8 | 11 |
| 2020 | 8 | 7 |
| 2021 | 7 | 11 |
| 2022 | 7 | 13 |
| 2023 | 11 | 14 |
| 2024 | 10 | 11 |
| 2025 | 11 | 8 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Acoustic and ultrasonic monitoring of inkjet droplets71US 5,929,875 AHewlett-Packard Company · 1999
- Dynamic multi-pass print mode corrections to compensate for malfunctioning inkjet nozzles60US 6,283,572 B1Hewlett-Packard Company · 2001
- Thermal-ink-jet print system with drop detector for drive pulse optimization44US 4,872,028 AHewlett-Packard Company · 1989
- Acoustic and ultrasonic monitoring of inkjet droplets40US 6,412,901 B1Hewlett-Packard Company · 2002
- Waveform generator for microdeposition control system40US 7,757,632 B2Ulvac, Inc. · 2010