D21D 1/40
Washing the fibres
D21D1/40 (Washing the fibres) appears on 94 US grants and 31 published applications in this corpus.
Search patents in D21D- Granted patents
- 94
- Published applications
- 31
- Assignees
- 49
- Inventors
- 126
- Latest grant
- 8 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 9 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 5 | 0 |
| 2002 | 1 | 4 |
| 2003 | 4 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 2 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 5 |
| 2011 | 1 | 3 |
| 2012 | 5 | 0 |
| 2013 | 1 | 1 |
| 2014 | 2 | 3 |
| 2015 | 2 | 2 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 2 | 1 |
| 2023 | 0 | 2 |
| 2024 | 0 | 1 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Pretreatment methods for cotton textile waste fabric8 Jul 2025US 12,351,983 B2Cotton Incorporated
- System and process for refining lignocellulosic biomass material20 May 2025US 12,305,329 B2Valmet Corporation
- Alignment device and method for aligning a shower bar nozzle flange20 Dec 2022US 11,529,639 B2Valmet Corporation
- Preparation method of cotton bast fiber and chitosan composite non-woven fabric for filtration12 Jul 2022US 11,383,189 B2Jiangnan University
- Method of and an arrangement for transferring a process liquid, an industrial facility and a method of simplifying the layout of such18 Jul 2017US 9,708,762 B2Sulzer Management AG
- Method and apparatus for recovering fibres5 Jun 2025US 2025/0179730 A1
- Method and apparatus for producing a mouldable cellulosic fibrous material28 Nov 2024US 2024/0392502 A1Papyrus Australia Limited
- Plant-Based Fibrous Product For Thermoforming5 Oct 2023US 2023/0312844 A1Mativ Holdings, Inc.
- Pretreatment methods for cotton textile waste fabric8 Jun 2023US 2023/0175205 A1Cotton Incorporated
- System and process for refining lignocellulosic biomass material26 May 2022US 2022/0162798 A1Valmet Corporation
Most cited
By later US patents
- Method of intensifying the washing of a fiber suspension27US 4,971,658 AA. Ahlstrom Corporation · 1990
- Method for treatment of a fibrous material-fluid mixture20US 5,238,501 AMaschinenfabrik Andritz Aktiengesellschaft · 1993
- Shower pipes for rotary drum filter18US 4,522,716 A1985
- Apparatus for treating pulp16US 4,952,314 AA. Ahlstrom Corporation · 1990
- Shower pipe assembly16US 5,028,007 ALavalley Industries, LLC · 1991