D21B 1/026
Separating fibrous materials from waste
Official title: {Separating fibrous materials from waste}
D21B1/026 (Separating fibrous materials from waste) appears on 153 US grants and 99 published applications in this corpus.
Search patents in D21B- Granted patents
- 153
- Published applications
- 99
- Assignees
- 86
- Inventors
- 229
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 0 |
| 2002 | 3 | 2 |
| 2003 | 2 | 4 |
| 2004 | 1 | 4 |
| 2005 | 2 | 0 |
| 2006 | 1 | 3 |
| 2007 | 0 | 3 |
| 2008 | 1 | 3 |
| 2009 | 0 | 2 |
| 2010 | 2 | 3 |
| 2011 | 2 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 1 |
| 2014 | 2 | 2 |
| 2015 | 3 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 3 |
| 2018 | 1 | 10 |
| 2019 | 4 | 8 |
| 2020 | 5 | 8 |
| 2021 | 6 | 4 |
| 2022 | 6 | 4 |
| 2023 | 6 | 12 |
| 2024 | 6 | 9 |
| 2025 | 10 | 7 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Separation device and sheet manufacturing apparatus12 May 2026US 12,624,499 B2Seiko Epson Corporation
- 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)
- Separation device30 Dec 2025US 12,509,826 B2Seiko Epson Corporation
- High yield chemical pulping and bleaching process7 Oct 2025US 12,435,469 B2GPCP IP Holdings LLC
- Process for the production of particle board or wood fiber board10 Jun 2025US 12,325,148 B2Unilin BV
- 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)
- Cellulosic paper material from recycled used textiles21 Aug 2025US 2025/0263890 A1Lenzing Aktiengesellschaft
- System and method for recycling waste material having preshredded step5 Jun 2025US 2025/0179731 A1Juno LLC
- Process for the production of particle board or wood fiber board29 May 2025US 2025/0170746 A1Unilin BV
- Process of transforming waste material into useful material29 May 2025US 2025/0171957 A1Bouldin Corporation
Most cited
By later US patents
- Materials size reduction systems and process73US 6,045,070 A2000
- Method for recycling plastic coated paper product waste and polymeric film52US 5,277,758 AAdvanced Environmental Recycling Technologies, Inc. · 1994
- Process and apparatus for the recovery of cellulose fibers from paper-plastic mixtures51US 4,440,635 A1984
- Method for recycling polymeric film47US 5,268,074 AAdvanced Environmental Recycling Technologies, Inc. · 1993
- System and method for cleaning, processing, and recycling materials46US 6,238,516 B12001