D21B 1/023
Cleaning wood chips or other raw materials
Official title: {Cleaning wood chips or other raw materials}
D21B1/023 (Cleaning wood chips or other raw materials) appears on 108 US grants and 24 published applications in this corpus.
Search patents in D21B- Granted patents
- 108
- Published applications
- 24
- Assignees
- 52
- Inventors
- 147
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 6 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 3 |
| 2003 | 1 | 2 |
| 2004 | 4 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 0 | 1 |
| 2018 | 0 | 2 |
| 2019 | 2 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 2 |
| 2024 | 1 | 2 |
| 2025 | 0 | 0 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and processing system for reducing volatile organic compounds from wood chips21 Apr 2026US 12,606,954 B2Fiberboard GmbH
- Juncao pulp for spinning and preparation method and use thereof27 Aug 2024US 12,071,725 B2Xinxiang Chemical Fibre Co., Ltd.
- Methods of staging, processing, and transporting biomasses7 Jun 2022US 11,352,745 B2Matera, LLC
- Systems and methods for use in processing of forest residue9 Jun 2020US 10,675,661 B2Biofuels Technology LLC
- Methods of compressing lignocellulosic feedstock into discrete units, and related systems9 Jul 2019US 10,344,309 B2POET Research, Inc.
- Compostable sleeve apparatus and method of manufacture17 Sep 2026US 2026/0274549 A1
- Process of using non-wood fibers to create paper pulp16 Jul 2026US 2026/0201639 A1
- Methods for processing fibrous cellulosic material, products and uses thereof26 Mar 2026US 2026/0085469 A1The Court of Edinburgh Napier University
- Process of using non-wood fibers to create paper pulp8 Aug 2024US 2024/0263393 A1
- Pulp for juncao spinning and preparation method and use thereof14 Mar 2024US 2024/0084507 A1Xinxiang Chemical Fibre Co., Ltd.
Most cited
By later US patents
- Disk screen, modular disk assembly and method29US 4,301,930 ARadar Companies, Inc. · 1981
- Disc screen for material separation27US 5,051,172 A1991
- Chip sizing process25US 4,376,042 AWeyerhaeuser Company · 1983
- Safety device for chip conditioning device22US 5,263,651 ABeloit Technologies, Inc. · 1993
- Machine and method for separating fines from wood chips20US 4,903,845 AAcrowood Corporation · 1990