D21B 1/22
With screw feed
Official title: with screw feed
D21B1/22 (With screw feed) appears on 18 US grants and 15 published applications in this corpus.
Search patents in D21B- Granted patents
- 18
- Published applications
- 15
- Assignees
- 19
- Inventors
- 32
- Latest grant
- 13 Sep 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 2 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steam evacuation in a pulp or fiber refiner13 Sep 2022US 11,440,017 B2Valmet Corporation
- Method for treating biomass and device for treating biomass2 Nov 2021US 11,162,216 B2Valmet Corporation
- Arrangement and system for a treatment process14 Aug 2018US 10,047,408 B2Valmet Corporation
- Feed screw arrangement27 Dec 2016US 9,528,222 B2Valmet Corporation
- Screw segment21 Jul 2015US 9,085,093 B2Toyota Jidosha Kabushiki Kaisha
- Process and fibre processing apparatus for the preparation of a pulp additive from a sugar beet starting material7 May 2026US 2026/0125851 A1SIMPLY BY NATURE GmbH
- Apparatus and Method of Defibrillating and/or Defibering Cellulose Fibres and/or Ligno-cellulosic Fibres26 Mar 2026US 2026/0085470 A1Zelfo Technology GmbH
- Processing of lignocellulosic biomass6 Apr 2023US 2023/0105345 A1Nova Pangaea Technologies (UK) Limited
- Biomass Processing20 Jan 2022US 2022/0018066 A1Earth's Renewable Energy LLC
- Steam Evacuation in a Pulp or Fiber Refiner26 Dec 2019US 2019/0388899 A1Valmet Corporation
Most cited
By later US patents
- Screw conveyor in pulp-making equipment17US 4,121,967 A1978
- Method and apparatus for treating a cellulosic feedstock10US 8,449,680 B2Mascoma Canada Inc. · 2013
- Methods and devices for continuous transfer of particulate and/or fibrous material between two zones with different temperatures and pressures7US 8,691,050 B22014
- Method and apparatus for increasing surface within wood chips5US 5,320,034 AKvaerner Hymac Inc. · 1994
- Method and device for manufacturing mechanical pulp4US 4,372,810 ASunds Defibrator AB · 1983