D21F 3/0218
Shoe presses
Official title: {Shoe presses}
D21F3/0218 (Shoe presses) appears on 469 US grants and 264 published applications in this corpus.
Search patents in D21F- Granted patents
- 469
- Published applications
- 264
- Assignees
- 91
- Inventors
- 484
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 12 | 0 |
| 1986 | 6 | 0 |
| 1987 | 10 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 18 | 0 |
| 1991 | 8 | 0 |
| 1992 | 20 | 0 |
| 1993 | 11 | 0 |
| 1994 | 10 | 0 |
| 1995 | 11 | 0 |
| 1996 | 15 | 0 |
| 1997 | 17 | 0 |
| 1998 | 19 | 0 |
| 1999 | 20 | 0 |
| 2000 | 21 | 0 |
| 2001 | 18 | 4 |
| 2002 | 25 | 19 |
| 2003 | 17 | 27 |
| 2004 | 13 | 31 |
| 2005 | 17 | 17 |
| 2006 | 16 | 13 |
| 2007 | 13 | 24 |
| 2008 | 13 | 6 |
| 2009 | 8 | 11 |
| 2010 | 13 | 16 |
| 2011 | 17 | 6 |
| 2012 | 11 | 7 |
| 2013 | 9 | 5 |
| 2014 | 3 | 5 |
| 2015 | 4 | 5 |
| 2016 | 1 | 7 |
| 2017 | 3 | 3 |
| 2018 | 6 | 1 |
| 2019 | 1 | 4 |
| 2020 | 6 | 5 |
| 2021 | 2 | 13 |
| 2022 | 4 | 7 |
| 2023 | 8 | 9 |
| 2024 | 5 | 13 |
| 2025 | 5 | 2 |
| 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
- Production of paper- or linerboard7 Aug 2025US 2025/0250745 A1Billerud Aktiebolag (publ)
Most cited
By later US patents
- Transfer belt in a press nip closed draw transfer90US 5,298,124 AAlbany International Corp. · 1994
- Advanced dewatering system86US 7,931,781 B2Voith Patent GmbH · 2011
- Device and method for producing a material web80US 8,382,956 B2Voith Patent GmbH · 2013
- Device and method for producing a material web68US 8,580,083 B2Voith Patent GmbH · 2013
- Paper machine belt64US 4,552,620 ABeloit Corporation · 1985