D21H 11/02
Chemical or chemomechanical or chemothermomechanical pulp
Official title: Chemical or chemomechanical {or chemothermomechanical} pulp
D21H11/02 (Chemical or chemomechanical or chemothermomechanical pulp) appears on 530 US grants and 648 published applications in this corpus.
Search patents in D21H- Granted patents
- 530
- Published applications
- 648
- Assignees
- 215
- Inventors
- 1,022
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 9 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 7 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 0 |
| 2002 | 3 | 3 |
| 2003 | 6 | 13 |
| 2004 | 3 | 6 |
| 2005 | 8 | 2 |
| 2006 | 0 | 6 |
| 2007 | 1 | 7 |
| 2008 | 1 | 4 |
| 2009 | 1 | 11 |
| 2010 | 4 | 4 |
| 2011 | 6 | 10 |
| 2012 | 14 | 10 |
| 2013 | 3 | 19 |
| 2014 | 15 | 25 |
| 2015 | 26 | 67 |
| 2016 | 51 | 53 |
| 2017 | 32 | 48 |
| 2018 | 38 | 39 |
| 2019 | 31 | 47 |
| 2020 | 44 | 41 |
| 2021 | 28 | 40 |
| 2022 | 27 | 38 |
| 2023 | 28 | 39 |
| 2024 | 34 | 40 |
| 2025 | 28 | 37 |
| 2026 | 19 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Corrugated board for humid conditions6 Oct 2026US 12,753,554 B2Billerud Aktiebolag (publ)
- Multi-ply liner with washed NSSC pulp29 Sep 2026US 12,747,539 B2Stora Enso OYJ
- Assymetric paperboard25 Aug 2026US 12,716,176 B2Billerud Aktiebolag (publ)
- Biodegradable boards and methods of making the same11 Aug 2026US 12,703,946 B2Kraft Foods Schweiz Holding GmbH
- Multi-ply liner for use in corrugated board28 Jul 2026US 12,692,664 B2Stora Enso OYJ
- Single layer coated white kraftliner8 Oct 2026US 2026/0308847 A1
- High porosity non-wood pulp8 Oct 2026US 2026/0308849 A1Kimberly-Clark Worldwide, Inc.
- Paperboard comprising recycled fibres24 Sep 2026US 2026/0286608 A1Billerud Aktiebolag (publ)
- Packaging web material, packaging pouch and process for forming a packaging pouch24 Sep 2026US 2026/0286615 A1Mondi AG
- Pulp sheet for fluff pulp, fluff mat, and absorbent article17 Sep 2026US 2026/0275639 A1Oji Holdings Corporation
Most cited
By later US patents
- Paper towels having bulky inner layer140US 5,087,324 AJames River Corporation of Virginia · 1992
- Process for making soft, strong cellulosic sheet and products made thereby136US 4,795,530 AKimberly-Clark Corporation · 1989
- Wet-resilient webs and disposable articles made therewith135US 6,436,234 B1Kimberly-Clark Worldwide, Inc. · 2002
- Conductive laminate flooring134US 4,724,187 ANevamar Corporation · 1988
- Sanitary tissue products114US 9,322,136 B2The Procter & Gamble Company · 2016