D21D 1/008
Discs
Official title: {Discs}
D21D1/008 (Discs) appears on 41 US grants and 39 published applications in this corpus.
Search patents in D21D- Granted patents
- 41
- Published applications
- 39
- Assignees
- 18
- Inventors
- 34
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 2 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 5 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 1 | 1 |
| 2019 | 2 | 5 |
| 2020 | 1 | 2 |
| 2021 | 3 | 2 |
| 2022 | 3 | 5 |
| 2023 | 3 | 4 |
| 2024 | 7 | 7 |
| 2025 | 3 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Deflaking element for pulper10 Mar 2026US 12,571,161 B2Kadant Black Clawson LLC
- Apparatus and method for processing wood fibers17 Feb 2026US 12,553,182 B2International Paper Company
- Refiner11 Nov 2025US 12,467,201 B2Aikawa Iron Works Co., Ltd.
- Blade segment for refiner9 Sep 2025US 12,410,558 B2Valmet Technologies Oy
- Refiner4 Feb 2025US 12,215,462 B2Aikawa Iron Works Co., Ltd.
- Apparatus and method for processing wood fibers10 Jul 2025US 2025/0223760 A1International Paper Company
- Deflaking Element for Pulper28 Nov 2024US 2024/0392501 A1
- Apparatus and method for processing wood fibers31 Oct 2024US 2024/0360622 A1International Paper Company
- Apparatus and method for processing wood fibers5 Sep 2024US 2024/0295076 A1International Paper Company
- Refiner5 Sep 2024US 2024/0296736 A1Aikawa Iron Works Co., Ltd.
Most cited
By later US patents
- Refining element27US 5,704,559 ASunds Defibrator Industries AB · 1998
- Paper pulp defibering or refining plate and method of manufacturing it14US 5,580,472 ATechnogenia S.A. · 1996
- Apparatus for regulated dispersion treatment of highly consistent fibrous substances10US 5,730,376 AVoith Sulzer Stoffaufbereitung GmbH · 1998
- Device and treatment machine for the mechanical treatment of high-consistency fibrous material9US 5,904,308 AVoith Sulzer Papiertechnik Patent GmbH · 1999
- Deflaker plate and methods relating thereto9US 8,342,437 B2Andritz Inc. · 2013