D21F 11/00
Processes for making continuous lengths of paper, or of cardboard, or of
Official title: Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
D21F11/00 (Processes for making continuous lengths of paper, or of cardboard, or of) appears on 1,681 US grants and 1,434 published applications in this corpus.
Search patents in D21F- Granted patents
- 1,681
- Published applications
- 1,434
- Assignees
- 399
- Inventors
- 2,256
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 18 | 0 |
| 1978 | 6 | 0 |
| 1979 | 8 | 0 |
| 1980 | 21 | 0 |
| 1981 | 10 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 17 | 0 |
| 1985 | 15 | 0 |
| 1986 | 6 | 0 |
| 1987 | 12 | 0 |
| 1988 | 9 | 0 |
| 1989 | 8 | 0 |
| 1990 | 13 | 0 |
| 1991 | 11 | 0 |
| 1992 | 14 | 0 |
| 1993 | 14 | 0 |
| 1994 | 15 | 0 |
| 1995 | 18 | 0 |
| 1996 | 33 | 0 |
| 1997 | 42 | 0 |
| 1998 | 47 | 0 |
| 1999 | 48 | 0 |
| 2000 | 67 | 0 |
| 2001 | 68 | 17 |
| 2002 | 67 | 68 |
| 2003 | 56 | 68 |
| 2004 | 60 | 73 |
| 2005 | 34 | 51 |
| 2006 | 25 | 42 |
| 2007 | 25 | 49 |
| 2008 | 29 | 54 |
| 2009 | 32 | 42 |
| 2010 | 42 | 52 |
| 2011 | 44 | 30 |
| 2012 | 48 | 54 |
| 2013 | 53 | 38 |
| 2014 | 36 | 27 |
| 2015 | 17 | 46 |
| 2016 | 42 | 52 |
| 2017 | 21 | 41 |
| 2018 | 38 | 80 |
| 2019 | 59 | 84 |
| 2020 | 64 | 78 |
| 2021 | 71 | 90 |
| 2022 | 60 | 63 |
| 2023 | 68 | 82 |
| 2024 | 63 | 72 |
| 2025 | 55 | 43 |
| 2026 | 26 | 38 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- D21F 11/006Making patterned paper787
- D21F 11/14Making cellulose wadding, filter or blotting paper695
- D21F 11/02Processes for making continuous lengths of paper, or of cardboard, or of221
- D21F 11/002Processes for making continuous lengths of paper, or of cardboard, or of113
- D21F 11/06Processes for making continuous lengths of paper, or of cardboard, or of59
- D21F 11/12Making corrugated paper or board30
- D21F 11/008Making apertured paper25
- D21F 11/004Processes for making continuous lengths of paper, or of cardboard, or of15
All 10 subgroupsShow fewer
Recent patents
- Foam-assisted application of uncooked starch and dry strength agents to paper products8 Sep 2026US 12,729,486 B2Solenis Technologies, L.P.
- Creped tissue products having a machine direction oriented pattern1 Sep 2026US 12,723,353 B2Kimberly-Clark Worldwide, Inc.
- Continuous process for forming domed paper and structures25 Aug 2026US 12,715,192 B2Little Feet Packaging, Inc.
- Method for producing a machine glazed paper comprising microfibrillated cellulose and a machine glazed paper25 Aug 2026US 12,716,172 B2Stora Enso OYJ
- Assymetric paperboard25 Aug 2026US 12,716,176 B2Billerud Aktiebolag (publ)
- Compostable sleeve apparatus and method of manufacture17 Sep 2026US 2026/0274549 A1
- Discrete cells and emboss elements17 Sep 2026US 2026/0275645 A1The Procter & Gamble Company
- Single-ply tissue products and methods of manufacturing the same17 Sep 2026US 2026/0275647 A1Kimberly-Clark Worldwide, Inc.
- Method for making a multi-layered board10 Sep 2026US 2026/0265999 A1Kemira Oyj
- Treatment system and method for manufacture of paper, board or the like27 Aug 2026US 2026/0250909 A1Kemira Oyj
Most cited
By later US patents
- Process for making unitary fibrous structure comprising randomly distributed cellulosic fibers and non-randomly distributed synthetic fibers1,408US 7,067,038 B2The Procter & Gamble Company · 2006
- Method for making a fibrous structure comprising cellulosic and synthetic fibers1,393US 7,354,502 B2The Procter & Gamble Company · 2008
- Tissue paper642US 4,529,480 AThe Procter & Gamble Company · 1985
- Tissue paper641US 4,637,859 AThe Procter & Gamble Company · 1987
- Process for forming a layered paper web having improved bulk, tactile impression and absorbency and paper thereof629US 3,994,771 AThe Procter & Gamble Company · 1976