D21F 3/08
Pressure rolls
D21F3/08 (Pressure rolls) appears on 199 US grants and 144 published applications in this corpus.
Search patents in D21F- Granted patents
- 199
- Published applications
- 144
- Assignees
- 80
- Inventors
- 340
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 12 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 3 |
| 2002 | 10 | 7 |
| 2003 | 8 | 8 |
| 2004 | 7 | 8 |
| 2005 | 1 | 4 |
| 2006 | 4 | 3 |
| 2007 | 1 | 4 |
| 2008 | 1 | 1 |
| 2009 | 1 | 4 |
| 2010 | 2 | 5 |
| 2011 | 0 | 2 |
| 2012 | 2 | 4 |
| 2013 | 3 | 4 |
| 2014 | 5 | 7 |
| 2015 | 6 | 18 |
| 2016 | 7 | 9 |
| 2017 | 10 | 3 |
| 2018 | 4 | 4 |
| 2019 | 4 | 2 |
| 2020 | 4 | 9 |
| 2021 | 3 | 10 |
| 2022 | 8 | 5 |
| 2023 | 7 | 4 |
| 2024 | 4 | 6 |
| 2025 | 2 | 5 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Roll cover and roll30 Jun 2026US 12,668,922 B2Voith Patent GmbH
- Sheet manufacturing apparatus19 May 2026US 12,630,977 B2Seiko Epson Corporation
- Tissue product and method and apparatus for producing same22 Apr 2025US 12,281,445 B2Essity Hygiene and Health Aktiebolag
- Roller11 Feb 2025US 12,221,749 B2Voith Patent GmbH
- Tissue product and method and apparatus for producing same27 Aug 2024US 12,071,730 B2Essity Hygiene and Health Aktiebolag
- Roller with shielding for sensors10 Sep 2026US 2026/0266672 A1Joanneum Research Forschungsgesellschaft mbH
- Collar for compressing sleeve on drum4 Jun 2026US 2026/0151982 A1Suominen Oyj
- Method and apparatus for manufacturing a component of an absorbent product for sanitary use21 May 2026US 2026/0139420 A1GDM S.p. A.
- A sleeve for a drum7 May 2026US 2026/0125836 A1Suominen Oyj
- Sheet manufacturing apparatus8 Jan 2026US 2026/0009182 A1Seiko Epson Corporation
Most cited
By later US patents
- Elastomeric material covered rolls and a method of making the same58US 4,368,568 AYamauchi Rubber Industry Co., Ltd. · 1983
- Suction press roll45US 4,366,025 ABeloit Corporation · 1982
- Apparatus and method for removing fluid from a fibrous web44US 5,152,874 ABeloit Corporation · 1992
- Corrosion and abrasion resistant industrial roll coating with non-sticking properties41US 5,283,121 A1994
- Composite machine roll and method of manufacture41US 5,324,248 AComposite Development Corporation · 1994