B41F 5/20
Rotary letterpress machines: specially adapted for proof printing
Official title: specially adapted for proof printing
B41F5/20 (Rotary letterpress machines: specially adapted for proof printing) appears on 31 US grants and 22 published applications in this corpus.
Search patents in B41F- Granted patents
- 31
- Published applications
- 22
- Assignees
- 20
- Inventors
- 34
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 3 |
| 2006 | 0 | 4 |
| 2007 | 2 | 1 |
| 2008 | 1 | 1 |
| 2009 | 2 | 0 |
| 2010 | 0 | 3 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 2 | 2 |
| 2014 | 2 | 1 |
| 2015 | 1 | 3 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for creating a proof print in a web-processing printing press30 Sep 2025US 12,427,761 B1Heidelberger Druckmaschinen AG
- Colour proofing apparatus and method29 Nov 2016US 9,505,207 B2Bobst Bielefeld GmbH
- Ink proofing system13 Sep 2016US 9,440,426 B2Probity Engineering, LLC
- Flexographic proofing tools and methods10 Mar 2015US 8,973,497 B2Probity Engineering, LLC
- Flexographic proofing tools and methods14 Oct 2014US 8,857,331 B2Probity Engineering, LLC
- Method for creating a proof print in a web-processing printing press18 Sep 2025US 2025/0289216 A1Heidelberger Druckmaschinen AG
- Can manufacturing method and can manufacturing system13 Jun 2024US 2024/0190144 A1Toyo Seikan Co., Ltd.
- Method and device for aligning printing plates on printing cylinders20 Aug 2015US 2015/0231876 A1Ball Europe GmbH
- Method and apparatus for determining and setting an optimized operating distance between at least two cylinders involved in a printing process30 Jul 2015US 2015/0210058 A1Windmoeller & Hoelscher KG
- Ink proofing system30 Jul 2015US 2015/0210059 A1Probity Engineering, LLC
Most cited
By later US patents
- Mounting-proofing machine for flexographic plates23US 4,019,434 AMosstype Corporation · 1977
- Enhanced application printing ink hand proofing device21US 5,495,800 ACavanagh Corporation · 1996
- Method of operating a printing machine during start-up or run-on and optically testing a printed image20US 5,069,124 AMAN Roland Druckmaschinen AG · 1991
- Portable flexographic proofer device18US 4,852,486 ABASF SE · 1989
- Mounting-proofing machine17US 4,004,509 AMosstype Corporation · 1977