B41L 27/04
Ducts, containers, or supply devices or ink-level control devices
Official title: Ducts, containers, or supply devices or ink-level control devices (level control in general G05D9/00)
B41L27/04 (Ducts, containers, or supply devices or ink-level control devices) appears on 22 US grants and 12 published applications in this corpus.
Search patents in B41L- Granted patents
- 22
- Published applications
- 12
- Assignees
- 11
- Inventors
- 45
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 2 |
| 2021 | 3 | 1 |
| 2022 | 1 | 3 |
| 2023 | 1 | 2 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Fluid delivery system with pump servicing features30 Sep 2025US 12,427,780 B2Hewlett-Packard Development Company, L. P.
- Printing apparatus, system, and server system8 Oct 2024US 12,109,820 B2Canon Kabushiki Kaisha
- Printing fluid container with removable cap2 Jan 2024US 11,858,273 B2Hewlett-Packard Development Company, L. P.
- Printing apparatus, system, and server system11 Apr 2023US 11,623,449 B2Canon Kabushiki Kaisha
- Print material container2 Aug 2022US 11,402,765 B2Hewlett-Packard Development Company, L. P.
- Strain sensing15 Aug 2024US 2024/0271983 A1Hewlett-Packard Development Company, L. P.
- Fluid delivery system with pump servicing features14 Sep 2023US 2023/0286285 A1Hewlett-Packard Development Company, L. P.
- Printing apparatus, system, and server system29 Jun 2023US 2023/0202181 A1Canon Kabushiki Kaisha
- Printing fluid container with removable cap1 Dec 2022US 2022/0379623 A1Hewlett-Packard Development Company, L. P.
- Recording apparatus24 Nov 2022US 2022/0373461 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Low-blade inking mechanism with detachable ink duct troughs12US 4,481,883 ACreusot-Loire · 1984
- Printing press having plurality of separable inking mechanisms10US 4,150,621 AMathias Bauerle GmbH · 1979
- Fountain type applicator for ink or the like and cartridge therefor8US 4,659,243 A1987
- Ink-supply control device and stencil printing machine having the same8US 5,699,731 ARiso Kagaku Corporation · 1997
- Auxiliary form roller apparatus for rotary offset lithographic duplicating machines6US 4,554,869 A1985