B41F 31/022
Ink level control devices
Official title: {Ink level control devices}
B41F31/022 (Ink level control devices) appears on 67 US grants and 60 published applications in this corpus.
Search patents in B41F- Granted patents
- 67
- Published applications
- 60
- Assignees
- 44
- Inventors
- 158
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 2 |
| 2002 | 5 | 2 |
| 2003 | 2 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 3 |
| 2014 | 1 | 2 |
| 2015 | 1 | 1 |
| 2016 | 2 | 6 |
| 2017 | 1 | 3 |
| 2018 | 1 | 1 |
| 2019 | 2 | 3 |
| 2020 | 5 | 6 |
| 2021 | 2 | 6 |
| 2022 | 8 | 7 |
| 2023 | 6 | 3 |
| 2024 | 6 | 5 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Solder paste dispensing feedback system and circuit board printer using the same10 Feb 2026US 12,544,847 B2Illinois Tool Works Inc.
- Printing system26 Aug 2025US 12,397,540 B2Bobst Bielefeld GmbH
- Linear ink dispensing system1 Apr 2025US 12,263,671 B2Bobst Firenze S.R.L.
- Ink supply system24 Sep 2024US 12,097,694 B2Bobst Bielefeld GmbH
- Rotary screen printing apparatus and process18 Jun 2024US 12,011,915 B2Temptime Corporation
- Ink chamber frame structure and ink chamber device with ink return function5 Mar 2026US 2026/0061741 A1Sunrise Pacific Co., Ltd.
- Solder paste dispensing feedback system and circuit board printer using the same22 May 2025US 2025/0162052 A1Illinois Tool Works Inc.
- Rotary screen printing apparatus and process10 Oct 2024US 2024/0336056 A1Temptime Corporation
- Strain sensing15 Aug 2024US 2024/0271983 A1Hewlett-Packard Development Company, L. P.
- Rotary screen printing apparatus and process4 Apr 2024US 2024/0109282 A1Temptime Corporation
Most cited
By later US patents
- Method and apparatus for dispensing ink to a printing press44US 6,067,906 AWalter Stobb Assoicates, Inc. · 2000
- Printing press19US 5,724,890 AHeidelberger Druckmaschinen AG · 1998
- Ink level control system for offset printing presses17US 5,103,728 ABaldwin Technology Corporation · 1992
- Fluid level detection system17US 5,427,136 AThe Langston Corporation · 1995
- Ink level control16US 4,479,433 ABaldwin-Gegenheimer GmbH · 1984