D21D 1/22
Jordans
D21D1/22 (Jordans) appears on 78 US grants and 67 published applications in this corpus.
Search patents in D21D- Granted patents
- 78
- Published applications
- 67
- Assignees
- 42
- Inventors
- 142
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 4 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 3 |
| 2007 | 2 | 0 |
| 2008 | 2 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 1 | 4 |
| 2012 | 1 | 2 |
| 2013 | 3 | 3 |
| 2014 | 3 | 4 |
| 2015 | 4 | 1 |
| 2016 | 1 | 4 |
| 2017 | 1 | 1 |
| 2018 | 3 | 2 |
| 2019 | 2 | 2 |
| 2020 | 1 | 1 |
| 2021 | 2 | 6 |
| 2022 | 2 | 5 |
| 2023 | 2 | 8 |
| 2024 | 5 | 5 |
| 2025 | 7 | 3 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Deflaking element for pulper10 Mar 2026US 12,571,161 B2Kadant Black Clawson LLC
- Refining device30 Dec 2025US 12,508,601 B2Seiko Epson Corporation
- Refiner11 Nov 2025US 12,467,201 B2Aikawa Iron Works Co., Ltd.
- Refiner filling piece having variably coated bars28 Oct 2025US 12,454,793 B2Aikawa Fiber Technologies Oy
- Blade segment for refiner9 Sep 2025US 12,410,558 B2Valmet Technologies Oy
- Method and plant for dense pulp refining for papermaking17 Sep 2026US 2026/0275633 A1
- Refiner bars having stepped coatings8 Jan 2026US 2026/0009180 A1Aikawa Fiber Technologies Oy
- Refiner filling piece having variably coated spacer-integrated bars8 Jan 2026US 2026/0009181 A1Aikawa Fiber Technologies Oy
- Conical Refining Filling29 May 2025US 2025/0171959 A1Valmet Technologies Oy
- Adjusting Blade Gap in Processing Equipment for Processing Fibrous Material20 Feb 2025US 2025/0059708 A1Valmet Technologies Oy
Most cited
By later US patents
- Apparatus and method for conjoint adjustment of both the inner and outer grinding spaces of a pulp defibrating apparatus33US 5,042,726 ASunds Defibrator AB · 1991
- Surface enhanced pulp fibers, methods of making surface enhanced pulp fibers, products incorporating surface enhanced pulp fibers, and methods of making products incorporating surface enhanced pulp fibers23US 9,879,361 B2Domtar Paper Company, LLC · 2018
- Rotor for mixer-refiner-reactor19US 4,042,183 A1977
- Apparatus for screening waste paper pulp16US 5,798,025 AIshikawajima-Harima Jukogyo Kabushiki Kaisha · 1998
- Dual zone refiner with separated discharge flow control13US 5,445,328 AAndritz Sprout-Bauer, Inc. · 1995