D21B 1/30
Defibrating by other means
D21B1/30 (Defibrating by other means) appears on 656 US grants and 411 published applications in this corpus.
Search patents in D21B- Granted patents
- 656
- Published applications
- 411
- Assignees
- 340
- Inventors
- 1,092
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 10 | 0 |
| 1980 | 16 | 0 |
| 1981 | 12 | 0 |
| 1982 | 11 | 0 |
| 1983 | 15 | 0 |
| 1984 | 9 | 0 |
| 1985 | 6 | 0 |
| 1986 | 16 | 0 |
| 1987 | 14 | 0 |
| 1988 | 16 | 0 |
| 1989 | 14 | 0 |
| 1990 | 11 | 0 |
| 1991 | 15 | 0 |
| 1992 | 12 | 0 |
| 1993 | 17 | 0 |
| 1994 | 18 | 0 |
| 1995 | 13 | 0 |
| 1996 | 19 | 0 |
| 1997 | 21 | 0 |
| 1998 | 29 | 0 |
| 1999 | 19 | 0 |
| 2000 | 21 | 0 |
| 2001 | 26 | 9 |
| 2002 | 21 | 19 |
| 2003 | 12 | 12 |
| 2004 | 5 | 19 |
| 2005 | 8 | 16 |
| 2006 | 4 | 16 |
| 2007 | 14 | 12 |
| 2008 | 7 | 17 |
| 2009 | 10 | 9 |
| 2010 | 3 | 20 |
| 2011 | 7 | 14 |
| 2012 | 15 | 18 |
| 2013 | 9 | 18 |
| 2014 | 16 | 9 |
| 2015 | 12 | 9 |
| 2016 | 6 | 15 |
| 2017 | 6 | 15 |
| 2018 | 8 | 14 |
| 2019 | 12 | 19 |
| 2020 | 12 | 35 |
| 2021 | 22 | 19 |
| 2022 | 18 | 16 |
| 2023 | 14 | 14 |
| 2024 | 15 | 21 |
| 2025 | 13 | 19 |
| 2026 | 9 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing a biofuel by steam cracking18 Aug 2026US 12,709,715 B2Europeenne De Biomasse
- Sheet manufacturing apparatus21 Jul 2026US 12,686,969 B2Seiko Epson Corporation
- Recycling of lignocellulosic fibers from fiberboards21 Jul 2026US 12,686,970 B2Inter IKEA Systems B.V.
- Accept tank mixing arrangement30 Jun 2026US 12,668,920 B2Andritz Inc.
- Method and system for processing lignocellulose biomass material26 May 2026US 12,637,631 B2Valmet Corporation
- Method and device for producing a fibrous web20 Aug 2026US 2026/0243021 A1Andritz Kuesters GmbH
- System and method for handling a ragger formed in a pulper process4 Jun 2026US 2026/0152902 A1
- Method and arrangement for feedback based control in chemical refining of wood7 May 2026US 2026/0124782 A1Upm-Kymmene Corporation
- 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
Most cited
By later US patents
- Microfibrillated cellulose207US 4,374,702 AInternational Telephone and Telegraph Corporation · 1983
- Method of treating papermaking fibers for making tissue173US 5,348,620 AKimberly-Clark Corporation · 1994
- Method of treating papermaking fibers for making tissue146US 5,501,768 AKimberly-Clark Corporation · 1996
- Process for making a product serving as a cultivation support90US 5,087,400 AWogegal S.A. · 1992
- Microfibrillated cellulose81US 4,483,743 AInternational Telephone and Telegraph Corporation · 1984