D21F 11/14
Making cellulose wadding, filter or blotting paper
D21F11/14 (Making cellulose wadding, filter or blotting paper) appears on 695 US grants and 598 published applications in this corpus.
Search patents in D21F- Granted patents
- 695
- Published applications
- 598
- Assignees
- 146
- Inventors
- 878
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 7 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 19 | 0 |
| 1998 | 13 | 0 |
| 1999 | 17 | 0 |
| 2000 | 34 | 0 |
| 2001 | 35 | 5 |
| 2002 | 28 | 32 |
| 2003 | 26 | 45 |
| 2004 | 32 | 33 |
| 2005 | 22 | 31 |
| 2006 | 11 | 14 |
| 2007 | 19 | 27 |
| 2008 | 12 | 28 |
| 2009 | 24 | 24 |
| 2010 | 28 | 23 |
| 2011 | 17 | 12 |
| 2012 | 21 | 24 |
| 2013 | 25 | 10 |
| 2014 | 8 | 13 |
| 2015 | 6 | 26 |
| 2016 | 21 | 20 |
| 2017 | 13 | 20 |
| 2018 | 23 | 40 |
| 2019 | 32 | 33 |
| 2020 | 31 | 30 |
| 2021 | 32 | 38 |
| 2022 | 19 | 18 |
| 2023 | 31 | 23 |
| 2024 | 16 | 15 |
| 2025 | 14 | 7 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Papermaking machine with press section11 Aug 2026US 12,703,944 B2Structured I, LLC
- Absorbent paper products having unique physical strength properties28 Apr 2026US 12,612,738 B2Mercer International Inc.
- Fibrous structures and methods for making same16 Dec 2025US 12,497,736 B2The Procter & Gamble Company
- Absorbent paper products having unique physical strength properties11 Nov 2025US 12,467,206 B2Mercer International Inc.
- Soft, low lint, through air dried roll bath tissue4 Nov 2025US 12,460,354 B2First Quality Tissue, LLC
- Single-ply tissue products and methods of manufacturing the same17 Sep 2026US 2026/0275647 A1Kimberly-Clark Worldwide, Inc.
- High basis weight partitionable paper product20 Aug 2026US 2026/0243030 A1
- Paper producing system23 Jul 2026US 2026/0210045 A1Paper Excellence Canada Holdings Corporation
- Device for producing a fibrous web16 Jul 2026US 2026/0201640 A1Andritz Kuesters GmbH
- Method of manufacturing a film comprising highly refined cellulose fibers18 Jun 2026US 2026/0168173 A1Stora Enso OYJ
Most cited
By later US patents
- Method of making soft tissue products425US 5,672,248 AKimberly-Clark Worldwide, Inc. · 1997
- Absorbent paper having imprinted thereon a semi-twill, fabric knuckle pattern prior to final drying413US 3,974,025 AThe Procter & Gamble Company · 1976
- Soft tissue406US 5,607,551 AKimberly-Clark Corporation · 1997
- Wet-microcontracted paper and concomitant process377US 4,440,597 AThe Procter & Gamble Company · 1984
- Layered paper having a soft and smooth velutinous surface, and method of making such paper360US 4,300,981 AThe Procter & Gamble Company · 1981