B41J 2/165
Prevention or detection of nozzle clogging
Official title: Prevention {or detection} of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
B41J2/165 (Prevention or detection of nozzle clogging) appears on 7,980 US grants and 8,098 published applications in this corpus.
Search patents in B41J- Granted patents
- 7,980
- Published applications
- 8,098
- Assignees
- 557
- Inventors
- 7,413
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 12 | 0 |
| 1984 | 10 | 0 |
| 1985 | 18 | 0 |
| 1986 | 18 | 0 |
| 1987 | 8 | 0 |
| 1988 | 11 | 0 |
| 1989 | 15 | 0 |
| 1990 | 29 | 0 |
| 1991 | 16 | 0 |
| 1992 | 32 | 0 |
| 1993 | 33 | 0 |
| 1994 | 26 | 0 |
| 1995 | 47 | 0 |
| 1996 | 82 | 0 |
| 1997 | 57 | 0 |
| 1998 | 106 | 0 |
| 1999 | 130 | 0 |
| 2000 | 154 | 0 |
| 2001 | 252 | 68 |
| 2002 | 217 | 220 |
| 2003 | 252 | 216 |
| 2004 | 216 | 396 |
| 2005 | 203 | 524 |
| 2006 | 273 | 332 |
| 2007 | 292 | 405 |
| 2008 | 352 | 432 |
| 2009 | 287 | 473 |
| 2010 | 427 | 350 |
| 2011 | 369 | 364 |
| 2012 | 281 | 284 |
| 2013 | 326 | 313 |
| 2014 | 408 | 238 |
| 2015 | 348 | 265 |
| 2016 | 280 | 269 |
| 2017 | 217 | 305 |
| 2018 | 272 | 284 |
| 2019 | 276 | 316 |
| 2020 | 290 | 331 |
| 2021 | 252 | 317 |
| 2022 | 206 | 330 |
| 2023 | 223 | 296 |
| 2024 | 232 | 314 |
| 2025 | 223 | 250 |
| 2026 | 173 | 206 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B41J 2/16517Cleaning of print head nozzles4,973
- B41J 2/16505Caps, spittoons or covers for cleaning or preventing drying out2,986
- B41J 2/16585For paper-width or non-reciprocating print heads2,466
- B41J 2/16579Detection means therefor817
- B41J 2/16502Printhead constructions to prevent nozzle clogging or facilitate nozzle cleaning184
- B41J 2002/16594Pumps or valves for cleaningIndexing code96
- B41J 2002/16582Maintenance means fixed on the print head or its carriageIndexing code51
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