D21F 3/0209
With extended press nip
Official title: {with extended press nip}
D21F3/0209 (With extended press nip) appears on 554 US grants and 327 published applications in this corpus.
Search patents in D21F- Granted patents
- 554
- Published applications
- 327
- Assignees
- 106
- Inventors
- 580
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 15 | 0 |
| 1986 | 7 | 0 |
| 1987 | 11 | 0 |
| 1988 | 8 | 0 |
| 1989 | 11 | 0 |
| 1990 | 19 | 0 |
| 1991 | 8 | 0 |
| 1992 | 21 | 0 |
| 1993 | 11 | 0 |
| 1994 | 10 | 0 |
| 1995 | 11 | 0 |
| 1996 | 15 | 0 |
| 1997 | 17 | 0 |
| 1998 | 20 | 0 |
| 1999 | 20 | 0 |
| 2000 | 22 | 0 |
| 2001 | 23 | 4 |
| 2002 | 31 | 21 |
| 2003 | 21 | 36 |
| 2004 | 17 | 38 |
| 2005 | 21 | 21 |
| 2006 | 17 | 18 |
| 2007 | 14 | 31 |
| 2008 | 17 | 9 |
| 2009 | 14 | 13 |
| 2010 | 18 | 17 |
| 2011 | 19 | 8 |
| 2012 | 13 | 7 |
| 2013 | 10 | 6 |
| 2014 | 5 | 9 |
| 2015 | 5 | 10 |
| 2016 | 7 | 8 |
| 2017 | 5 | 3 |
| 2018 | 6 | 3 |
| 2019 | 2 | 4 |
| 2020 | 7 | 6 |
| 2021 | 3 | 16 |
| 2022 | 6 | 7 |
| 2023 | 9 | 11 |
| 2024 | 5 | 14 |
| 2025 | 6 | 3 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Belt4 Aug 2026US 12,698,593 B2Valmet Technologies Oy
- Paper making machine and process14 Jul 2026US 12,680,230 B2Toscotec S.P.A.
- Press cover for a shoe press or transport belt with improved hydrophobicity16 Jun 2026US 12,655,244 B2Voith Patent GmbH
- Method for manufacturing a support body arrangement, and a support body arrangement19 May 2026US 12,630,978 B2Valmet Corporation
- Support body and paper machine comprising such a support body3 Feb 2026US 12,540,434 B2Valmet Corporation
- Belt for pulp or paper machine with sensors for detecting pressure during operation and press using same17 Sep 2026US 2026/0275637 A1Andritz Inc.
- Method of manufacturing a film comprising highly refined cellulose fibers18 Jun 2026US 2026/0168173 A1Stora Enso OYJ
- Press arrangement and method for pressing a fibrous web22 Jan 2026US 2026/0022517 A1Voith Patent GmbH
- Press arrangement and method for pressing a fibrous web22 Jan 2026US 2026/0022518 A1Voith Patent GmbH
- Papermaking machine that utilizes only a structured fabric in the forming of paper4 Dec 2025US 2025/0369184 A1Structured I, LLC
Most cited
By later US patents
- Method of making wet pressed tissue paper95US 5,795,440 AThe Procter & Gamble Company · 1998
- Transfer belt in a press nip closed draw transfer90US 5,298,124 AAlbany International Corp. · 1994
- Twin wire for an ATMOS system87US 7,744,726 B2Voith Patent GmbH · 2010
- Advanced dewatering system86US 7,931,781 B2Voith Patent GmbH · 2011
- Advanced dewatering system85US 7,510,631 B2Voith Patent GmbH · 2009