D21D 1/02
Methods of beating
Official title: Methods of beating; Beaters of the Hollander type
D21D1/02 (Methods of beating) appears on 19 US grants and 27 published applications in this corpus.
Search patents in D21D- Granted patents
- 19
- Published applications
- 27
- Assignees
- 17
- Inventors
- 56
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 3 |
| 2017 | 0 | 1 |
| 2018 | 2 | 2 |
| 2019 | 3 | 3 |
| 2020 | 2 | 2 |
| 2021 | 3 | 3 |
| 2022 | 3 | 1 |
| 2023 | 2 | 1 |
| 2024 | 0 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 2 |
By publication year. 2026 runs to 8 Oct.
Subgroups
Granted patents
- D21D 1/06Bed plates3
- D21D 1/04Beater rolls or bars1
- D21D 1/18Beaters with two or more beater rolls1
- D21D 1/08Beaters with means for driving the pulp quickly0
- D21D 1/10Beaters with means for regulating the pressure between the beater roll and0
- D21D 1/12Beaters with means for continuous pulp discharge0
- D21D 1/14Beaters with one beater roll and with vertical stuff circulation canal0
- D21D 1/16Beaters with means for returning the pulp over the head of the0
Recent patents
- Methods for producing pulp and paper products from plants having bast and hurd fibers3 Mar 2026US 12,565,735 B2Goldcup 33965 AB (Unc. Hejmas Agrifibre Technologies AB)
- Environmentally-friendly method for enhancing mechanical properties of high antibacterial nano dialysis paper for medical protection12 Dec 2023US 11,840,806 B2Zhejiang University of Science and Technology
- Production of modified pulp29 Aug 2023US 11,739,477 B2Sca Forest Products AB
- Preparation method of cotton bast fiber and chitosan composite non-woven fabric for filtration12 Jul 2022US 11,383,189 B2Jiangnan University
- Defibration processing device, and fibrous feedstock recycling device1 Mar 2022US 11,261,565 B2Seiko Epson Corporation
- Methods for producing pulp and paper products from plants having bast and hurd fibers25 Jun 2026US 2026/0176819 A1Goldcup 33965 AB (Unc. Hejmas Agrifibre Technologies AB)
- Apparatus and method for dry forming cellulose products5 Feb 2026US 2026/0034759 A1Fameccanica, Data S.P A.
- Bedplates having graduated openings for pulp processing units1 May 2025US 2025/0137197 A1Kadant Black Clawson LLC
- Methods for producing pulp and paper products from plants having bast and hurd fibers5 Sep 2024US 2024/0295074 A1Goldcup 33965 AB (Unc. Hejmas Agrifibre Technologies AB)
- Environmentally-friendly method for enhancing mechanical properties of high antibacterial nano dialysis paper for medical protection26 Oct 2023US 2023/0340727 A1Zhejiang University of Science and Technology
Most cited
By later US patents
- Process for producing nanofibers37US 8,444,808 B2KX Industries, L.P. · 2013
- 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
- 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 fibers11US 10,704,165 B2Domtar Paper Company, LLC · 2020
- Defibrated material manufacturing device, and sheet manufacturing apparatus6US 11,028,536 B2Seiko Epson Corporation · 2021
- 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 fibers2US 10,975,499 B2Domtar Paper Company, LLC · 2021