D21B 1/028
By dry methods
Official title: {by dry methods}
D21B1/028 (By dry methods) appears on 57 US grants and 31 published applications in this corpus.
Search patents in D21B- Granted patents
- 57
- Published applications
- 31
- Assignees
- 28
- Inventors
- 66
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 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 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 3 |
| 2005 | 2 | 0 |
| 2006 | 0 | 3 |
| 2007 | 0 | 1 |
| 2008 | 1 | 3 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 2 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 2 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 3 |
| 2024 | 0 | 3 |
| 2025 | 3 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- Method for producing a cellulose paper material from used textiles3 Jun 2025US 12,320,070 B2Lenzing Aktiengesellschaft
- Cellulose processing8 Apr 2025US 12,269,936 B2Coöperatie Koninklijke Cosun U.A.
- 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
- 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)
- Method for producing air-laid products2 May 2024US 2024/0141568 A1Voith Patent GmbH
- Pulp mold comprising seaweed, and production method for same11 Jan 2024US 2024/0011224 A1Marine Innovation, Inc.
Most cited
By later US patents
- Process and apparatus for the recovery of cellulose fibers from paper-plastic mixtures51US 4,440,635 A1984
- Paper sorting system34US 6,250,472 B1Advanced Sorting Technologies, LLC · 2001
- Method for converting waste paper products into useful forms33US 4,123,489 AFlett Development Company · 1978
- Method for processing domestic, industrial and other similar waste with the production of a cellulose material30US 5,100,066 AOrgan-Faser Technology Company N.V. · 1992
- Solid waste processing29US 4,553,977 A1985