D21D 5/22
In apparatus with a vertical axis
Official title: in apparatus with a vertical axis
D21D5/22 (In apparatus with a vertical axis) appears on 14 US grants and 1 published applications in this corpus.
Search patents in D21D- Granted patents
- 14
- Published applications
- 1
- Assignees
- 11
- Inventors
- 19
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 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 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for treating mixtures of liquids and solids19 May 2026US 12,630,976 B2Lean Pulp Oy
- Variable pressure screening19 Feb 2002US 6,348,130 B1Thermo Black Clawson Inc.
- Screen/vortex apparatus for cleaning recycled pulp related process13 Jan 1998US 5,707,488 AInternational Paper Company
- Screen, vortex apparatus for cleaning recycled pulp and related process3 Dec 1996US 5,580,446 AInternational Paper Company
- Cleaner for stock suspensions2 Nov 1993US 5,257,698 ASulzer-Escher Wyss GmbH
Most cited
By later US patents
- Screen, vortex apparatus for cleaning recycled pulp and related process21US 5,580,446 AInternational Paper Company · 1996
- Cyclone classifier11US 4,477,339 A1984
- Centrifugal separator10US 4,265,740 AIngersoll-Rand Company · 1981
- Method and an apparatus for treating fibre suspensions10US 4,594,152 AKamyr, Inc. · 1986
- Device for selectively separating particles in a liquid, in particular for cleaning fibrous paper suspensing10US 5,131,544 ACentre Technique De L' Industrie Des Papiers, Cartons Et Celluloses · 1992