B41J 2/04521
Reducing number of signal lines needed
Official title: {reducing number of signal lines needed}
B41J2/04521 (Reducing number of signal lines needed) appears on 91 US grants and 86 published applications in this corpus.
Search patents in B41J- Granted patents
- 91
- Published applications
- 86
- Assignees
- 28
- Inventors
- 132
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 5 | 10 |
| 2003 | 8 | 5 |
| 2004 | 5 | 3 |
| 2005 | 4 | 5 |
| 2006 | 3 | 3 |
| 2007 | 2 | 3 |
| 2008 | 2 | 2 |
| 2009 | 3 | 3 |
| 2010 | 4 | 3 |
| 2011 | 2 | 1 |
| 2012 | 3 | 2 |
| 2013 | 2 | 0 |
| 2014 | 1 | 2 |
| 2015 | 3 | 2 |
| 2016 | 2 | 2 |
| 2017 | 3 | 5 |
| 2018 | 7 | 7 |
| 2019 | 2 | 4 |
| 2020 | 3 | 4 |
| 2021 | 3 | 9 |
| 2022 | 5 | 3 |
| 2023 | 7 | 6 |
| 2024 | 4 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Element substrate, liquid discharge head, and printing apparatus16 Dec 2025US 12,496,820 B2Canon Kabushiki Kaisha
- Communicating print component31 Dec 2024US 12,183,430 B2Hewlett-Packard Development Company, L. P.
- Accessing registers of fluid ejection devices24 Sep 2024US 12,097,695 B2Hewlett-Packard Development Company, L. P.
- Printing apparatus30 Apr 2024US 11,969,996 B2Canon Kabushiki Kaisha
- Multiple circuits coupled to an interface30 Apr 2024US 11,969,998 B2Hewlett-Packard Development Company, L. P.
- Print element board, print head, and printing apparatus25 Sep 2025US 2025/0296317 A1Canon Kabushiki Kaisha
- Multiple circuits coupled to an interface8 Aug 2024US 2024/0262101 A1Hewlett-Packard Development Company, L. P.
- Communicating print component23 Nov 2023US 2023/0373208 A1Hewlett-Packard Development Company, L. P.
- Accessing registers of fluid ejection devices9 Nov 2023US 2023/0356525 A1Hewlett-Packard Development Company, L. P.
- Communicating print component10 Aug 2023US 2023/0253021 A1Hewlett-Packard Development Company, L. P.
Most cited
By later US patents
- Printhead with reduced interconnections to a printer84US 5,541,629 AHewlett-Packard Company · 1996
- EPROM structure using thermal ink jet fire lines on a printhead39US 8,864,260 B1Hewlett-Packard Development Company, L. P. · 2014
- Dynamic memory based firing cell of thermal ink jet printhead33US 6,439,697 B1Hewlett-Packard Company · 2002
- Print head drive scheme20US 6,431,677 B1Lexmark International, Inc. · 2002
- Head driving device of ink-jet printer17US 5,936,644 AKabushiki Kaisha TEC · 1999