D21F 11/12
Making corrugated paper or board
D21F11/12 (Making corrugated paper or board) appears on 30 US grants and 49 published applications in this corpus.
Search patents in D21F- Granted patents
- 30
- Published applications
- 49
- Assignees
- 29
- Inventors
- 81
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 1 | 2 |
| 2018 | 0 | 4 |
| 2019 | 3 | 5 |
| 2020 | 3 | 4 |
| 2021 | 2 | 4 |
| 2022 | 3 | 6 |
| 2023 | 3 | 3 |
| 2024 | 1 | 4 |
| 2025 | 3 | 5 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-ply liner for use in corrugated board28 Jul 2026US 12,692,664 B2Stora Enso OYJ
- Method for manufacturing fluting and/or liner for corrugated board3 Feb 2026US 12,540,436 B2Stora Enso OYJ
- Composite waterproof corrugated paper and manufacturing method thereof17 Jun 2025US 12,331,468 B2Taiwan Lung Meng Advanced Composite Materials Co., Ltd.
- Light weight linerboard for corrugated board25 Feb 2025US 12,234,605 B2Stora Enso OYJ
- Method for manufacturing two-sided laminated cardboard, as well as two-sided laminated cardboard manufactured by such a method18 Feb 2025US 12,227,901 B2The Eska Company
- Corrugated cardboard and a method for producing a corrugated cardboard20 Aug 2026US 2026/0243022 A1Jml Innovation AB
- Water laminated tissue products20 Aug 2026US 2026/0243031 A1Kimberly-Clark Worldwide, Inc.
- Boosting the cross-machine direction shrinkage and extensibility of a fiber product13 Nov 2025US 2025/0347057 A1Teknologian tutkimuskeskus VTT Oy
- Kraftliner paper made of short chemical fibres4 Sep 2025US 2025/0277339 A1Klabin S.A.
- Single layer white kraftliner19 Jun 2025US 2025/0198089 A1
Most cited
By later US patents
- Linear corrugating roll deflection control25US 4,179,253 ADomtar Inc. · 1979
- Method and apparatus for producing corrugated combined board18US 4,285,764 ABeloit Corporation · 1981
- Machine for producing a corrugated cardboard web lined at least on one side8US 8,127,816 B2BHS Corrugated Maschinen-und Anlagenbau GmbH · 2012
- Repulpable and recyclable composite packaging articles and related methods7US 9,637,866 B2Smart Planet Technologies, Inc. · 2017
- Process for preparing moisture-resistant packing cardboard6US 4,560,429 AMontedison S.p.A. · 1985