D21H 27/38
At least one of the sheets having a fibrous composition differing from
Official title: at least one of the sheets having a fibrous composition differing from that of other sheets
D21H27/38 (At least one of the sheets having a fibrous composition differing from) appears on 406 US grants and 417 published applications in this corpus.
Search patents in D21H- Granted patents
- 406
- Published applications
- 417
- Assignees
- 172
- Inventors
- 753
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 0 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 13 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 18 | 1 |
| 2002 | 9 | 15 |
| 2003 | 17 | 31 |
| 2004 | 16 | 20 |
| 2005 | 10 | 13 |
| 2006 | 7 | 10 |
| 2007 | 4 | 12 |
| 2008 | 8 | 7 |
| 2009 | 4 | 4 |
| 2010 | 4 | 8 |
| 2011 | 7 | 5 |
| 2012 | 3 | 4 |
| 2013 | 8 | 9 |
| 2014 | 8 | 8 |
| 2015 | 16 | 20 |
| 2016 | 9 | 18 |
| 2017 | 11 | 23 |
| 2018 | 13 | 25 |
| 2019 | 13 | 21 |
| 2020 | 17 | 16 |
| 2021 | 21 | 27 |
| 2022 | 11 | 25 |
| 2023 | 29 | 37 |
| 2024 | 19 | 24 |
| 2025 | 17 | 12 |
| 2026 | 19 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Corrugated board for humid conditions6 Oct 2026US 12,753,554 B2Billerud Aktiebolag (publ)
- 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
- Impregnating coating layer for insulating sheetsand multilayer laminates15 Sep 2026US 12,734,766 B2Coveme S.P.A.
- Multi-ply liner for use in corrugated board28 Jul 2026US 12,692,664 B2Stora Enso OYJ
- Paperboard comprising recycled fibres24 Sep 2026US 2026/0286608 A1Billerud Aktiebolag (publ)
- A method for producing a laminate, and a laminate27 Aug 2026US 2026/0250910 A1Stora Enso OYJ
- Multi-layered product having an embossed interior layer and a method for making the product13 Aug 2026US 2026/0233486 A1American Custom Converting, L.L.C.
- A method for manufacturing a paper or paperboard based packaging laminate6 Aug 2026US 2026/0225357 A1Stora Enso OYJ
- Premium Sanitary Tissue Products Comprising Non-wood Fibers30 Jul 2026US 2026/0218456 A1The Procter & Gamble Company
Most cited
By later US patents
- Method for making a fibrous structure comprising cellulosic and synthetic fibers1,393US 7,354,502 B2The Procter & Gamble Company · 2008
- 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
- Soft tissue406US 5,607,551 AKimberly-Clark Corporation · 1997
- Layered paper having a soft and smooth velutinous surface, and method of making such paper360US 4,300,981 AThe Procter & Gamble Company · 1981