D21F 7/04
Paper-break control devices
D21F7/04 (Paper-break control devices) appears on 62 US grants and 35 published applications in this corpus.
Search patents in D21F- Granted patents
- 62
- Published applications
- 35
- Assignees
- 38
- Inventors
- 119
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 7 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 4 |
| 2003 | 5 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 3 |
| 2007 | 0 | 2 |
| 2008 | 1 | 3 |
| 2009 | 1 | 3 |
| 2010 | 1 | 0 |
| 2011 | 3 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 4 | 6 |
| 2025 | 3 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and device for detecting a web break of a fibrous web, industrial plant and computer program product20 Jan 2026US 12,529,189 B2Siemens Energy Global GmbH & Co. KG
- Adaptive-learning, auto-labeling method and system for predicting and diagnosing web breaks in paper machine4 Nov 2025US 12,460,349 B2ABB Schweiz AG
- Systems and methods for monitoring and controlling industrial processes5 Aug 2025US 12,379,717 B2Industrial Video Solutions Inc.
- Systems and methods for monitoring and controlling industrial processes14 Jan 2025US 12,198,438 B2Industrial Video Solutions Inc.
- Systems and methods for monitoring and controlling industrial processes17 Dec 2024US 12,169,400 B2Industrial Video Solutions Inc.
- Systems and methods for monitoring and controlling industrial processes27 Nov 2025US 2025/0362667 A1Industrial Video Solutions Inc.
- Systems and methods for monitoring and controlling industrial processes31 Oct 2024US 2024/0361756 A1Industrial Video Solutions Inc.
- Systems and methods for monitoring and controlling industrial processes1 Aug 2024US 2024/0255932 A1Industrial Video Solutions Inc.
- Systems and methods for monitoring and controlling industrial processes27 Jun 2024US 2024/0212356 A1Industrial Video Solutions Inc.
- Systems and methods for monitoring and controlling industrial processes30 May 2024US 2024/0175831 A1Industrial Video Solutions Inc.
Most cited
By later US patents
- Belt cleaning device for papermaking machines49US 5,783,044 AVoith Sulzer Papiermaschinen GmbH · 1998
- Device for cutting a fiber web32US 4,182,170 AJ. M. Voith GmbH · 1980
- Paper web breakage prediction using bootstrap aggregation of classification and regression trees30US 6,519,534 B2General Electric Company · 2003
- Method and a device for cutting a web in a paper machine by means of a water jet22US 4,931,140 AOy Tampella AB · 1990
- Tail threading system for a papermaking machine21US 5,762,759 ABeloit Technologies, Inc. · 1998