D21D 1/002
Control devices
Official title: {Control devices}
D21D1/002 (Control devices) appears on 83 US grants and 46 published applications in this corpus.
Search patents in D21D- Granted patents
- 83
- Published applications
- 46
- Assignees
- 51
- Inventors
- 129
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 3 |
| 2003 | 5 | 5 |
| 2004 | 2 | 3 |
| 2005 | 7 | 7 |
| 2006 | 3 | 4 |
| 2007 | 3 | 4 |
| 2008 | 4 | 0 |
| 2009 | 2 | 2 |
| 2010 | 3 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 2 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 0 | 2 |
| 2023 | 1 | 3 |
| 2024 | 2 | 2 |
| 2025 | 4 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Refiner11 Nov 2025US 12,467,201 B2Aikawa Iron Works Co., Ltd.
- Method for optimizing the refining energy during an operation of refining of a fiber composition7 Oct 2025US 12,435,470 B2Kadant Lamort
- Driving assistance apparatus20 May 2025US 12,307,893 B2Honda Motor Co., Ltd.
- Refiner4 Feb 2025US 12,215,462 B2Aikawa Iron Works Co., Ltd.
- Arrangement and method for adjusting blade gap in refiner17 Sep 2024US 12,091,819 B2Valmet Technologies Oy
- Measurement System and Method for Monitoring Gap Adjustment Mechanism26 Mar 2026US 2026/0084160 A1Valmet Technologies Oy
- Method for optimizing the refining energy during an operation of refining of a fiber composition26 Jun 2025US 2025/0207327 A1Kadant Lamort
- Adjusting Blade Gap in Processing Equipment for Processing Fibrous Material20 Feb 2025US 2025/0059708 A1Valmet Technologies Oy
- Refiner5 Sep 2024US 2024/0296736 A1Aikawa Iron Works Co., Ltd.
- Refiner18 Jul 2024US 2024/0242605 A9Aikawa Iron Works Co., Ltd.
Most cited
By later US patents
- Integrated paper pulp and process machinery having integrated drive and control and methods of use thereof85US 6,617,720 B1Kadant Black Clawson LLC · 2003
- Gap, wear and tram measurement system and method for grinding machines31US 4,820,980 A1989
- Refiner disk sensor and sensor refiner disk30US 6,502,774 B1J & L Fiber Services, Inc. · 2003
- Pressure relief system for treating fibrous materials under pressure26US 5,645,690 AWestvaco Corporation · 1997
- Wet end control for papermaking machine20US 6,086,716 AHoneywell-Measurex Corporation · 2000