B41L 39/00
Indicating, counting, warning, control, or safety devices
Official title: Indicating, counting, warning, control, or safety devices (ink-level control devices B41L27/04; such devices in general, see relevant subclasses, e.g. counting in general G06M)
B41L39/00 (Indicating, counting, warning, control, or safety devices) appears on 34 US grants and 18 published applications in this corpus.
Search patents in B41L- Granted patents
- 34
- Published applications
- 18
- Assignees
- 16
- Inventors
- 74
- Latest grant
- 6 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 3 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 3 |
| 2020 | 2 | 2 |
| 2021 | 2 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Control device, control method, and system6 May 2025US 12,291,048 B2Seiko Epson Corporation
- Printers and controllers14 Mar 2023US 11,604,954 B2Hewlett-Packard Development Company, L. P.
- Identifying printing substrate types6 Jul 2021US 11,052,682 B2Hewlett-Packard Development Company, L. P.
- Detecting a level of printable fluid in a container30 Mar 2021US 10,960,658 B2Hewlett-Packard Development Company, L. P.
- Calibrating communication lines1 Dec 2020US 10,853,004 B2Hewlett-Packard Development Company, L. P.
- Control device, control method, and system4 Jan 2024US 2024/0001699 A1Seiko Epson Corporation
- Media identification14 Apr 2022US 2022/0111672 A1Hewlett-Packard Development Company, L. P.
- Printers and controllers22 Jul 2021US 2021/0224621 A1Hewlett-Packard Development Company, L. P.
- Paper sheet handling apparatus and method of configuring pld in paper sheet handling apparatus5 Nov 2020US 2020/0346475 A1Fujitsu Frontech Limited
- Calibrating communication lines19 Mar 2020US 2020/0089438 A1Hewlett-Packard Development Company, L. P.
Most cited
By later US patents
- Multicolor printing press19US 4,919,047 AToray Industries, Inc. · 1990
- Dual printing with single master supply source11US 3,987,722 AAddressograph Multigraph Corporation · 1976
- Duplicator control by area scanned coded master9US 4,082,039 AAddressograph Multigraph Corporation · 1978
- Attachment for offset duplicating machine7US 4,044,666 A1977
- Dual-head duplicator with alternate simplexing capability7US 4,327,641 AAM International, Inc. · 1982