D21H 11/00
Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
D21H11/00 (Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only) appears on 2,142 US grants and 2,796 published applications in this corpus.
Search patents in D21H- Granted patents
- 2,142
- Published applications
- 2,796
- Assignees
- 919
- Inventors
- 4,512
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 7 | 0 |
| 1978 | 7 | 0 |
| 1979 | 0 | 0 |
| 1980 | 7 | 0 |
| 1981 | 11 | 0 |
| 1982 | 12 | 0 |
| 1983 | 11 | 0 |
| 1984 | 6 | 0 |
| 1985 | 9 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 13 | 0 |
| 1990 | 10 | 0 |
| 1991 | 11 | 0 |
| 1992 | 25 | 0 |
| 1993 | 10 | 0 |
| 1994 | 11 | 0 |
| 1995 | 16 | 0 |
| 1996 | 25 | 0 |
| 1997 | 32 | 0 |
| 1998 | 29 | 0 |
| 1999 | 26 | 0 |
| 2000 | 20 | 0 |
| 2001 | 35 | 4 |
| 2002 | 34 | 50 |
| 2003 | 48 | 69 |
| 2004 | 31 | 51 |
| 2005 | 29 | 45 |
| 2006 | 17 | 33 |
| 2007 | 11 | 39 |
| 2008 | 14 | 39 |
| 2009 | 8 | 34 |
| 2010 | 18 | 49 |
| 2011 | 32 | 59 |
| 2012 | 38 | 79 |
| 2013 | 46 | 107 |
| 2014 | 83 | 110 |
| 2015 | 77 | 186 |
| 2016 | 124 | 147 |
| 2017 | 97 | 149 |
| 2018 | 118 | 158 |
| 2019 | 103 | 185 |
| 2020 | 157 | 205 |
| 2021 | 119 | 210 |
| 2022 | 126 | 172 |
| 2023 | 119 | 189 |
| 2024 | 134 | 170 |
| 2025 | 118 | 143 |
| 2026 | 81 | 114 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- D21H 11/16Modified by a particular after-treatment1,037
- D21H 11/02Chemical or chemomechanical or chemothermomechanical pulp530
- D21H 11/14Secondary fibres401
- D21H 11/12Pulp from non-woody plants or crops358
- D21H 11/08Mechanical or thermomechanical pulp139
- D21H 11/10Mixtures of chemical and mechanical pulp68
Recent patents
- Fibrous body processing apparatus6 Oct 2026US 12,753,550 B2Seiko Epson Corporation
- Corrugated board for humid conditions6 Oct 2026US 12,753,554 B2Billerud Aktiebolag (publ)
- Moisture/oil resistant composite materials29 Sep 2026US 12,747,536 B2World Centric
- Method for producing a multilayer machine glazed paper comprising highly refined cellulose fibers and a multilayer machine glazed paper produced29 Sep 2026US 12,747,538 B2Stora Enso OYJ
- Multi-ply liner with washed NSSC pulp29 Sep 2026US 12,747,539 B2Stora Enso OYJ
- Arrays of sanitary tissue products comprising non-wood(s)8 Oct 2026US 2026/0307891 A1The Procter & Gamble Company
- Process for producing hygienized pulp8 Oct 2026US 2026/0308846 A1Kemira Oyj
- Single layer coated white kraftliner8 Oct 2026US 2026/0308847 A1
- Paper substrate for fibrous casing substrate8 Oct 2026US 2026/0308848 A1Nippon Paper Papylia Co., Ltd.
- High porosity non-wood pulp8 Oct 2026US 2026/0308849 A1Kimberly-Clark Worldwide, Inc.
Most cited
By later US patents
- Hesperaloe tissue having improved cross-machine direction properties809US 10,337,148 B2Kimberly-Clark Worldwide, Inc. · 2019
- Substrate for wallboard joint tape and process for making same802US 10,106,932 B2International Paper Company · 2018
- Microfibrillated cellulose207US 4,374,702 AInternational Telephone and Telegraph Corporation · 1983
- Wet laid fiber sheet manufacturing with reactivatable binders for binding particles to fibers202US 5,300,192 AWeyerhaeuser Company · 1994
- Processing biomass176US 7,932,065 B2Xyleco, Inc. · 2011