D21F 3/04
Arrangements thereof
D21F3/04 (Arrangements thereof) appears on 305 US grants and 147 published applications in this corpus.
Search patents in D21F- Granted patents
- 305
- Published applications
- 147
- Assignees
- 77
- Inventors
- 389
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 9 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 11 | 0 |
| 1991 | 4 | 0 |
| 1992 | 13 | 0 |
| 1993 | 8 | 0 |
| 1994 | 7 | 0 |
| 1995 | 11 | 0 |
| 1996 | 10 | 0 |
| 1997 | 12 | 0 |
| 1998 | 13 | 0 |
| 1999 | 15 | 0 |
| 2000 | 11 | 0 |
| 2001 | 18 | 4 |
| 2002 | 13 | 12 |
| 2003 | 11 | 7 |
| 2004 | 7 | 6 |
| 2005 | 3 | 6 |
| 2006 | 5 | 2 |
| 2007 | 3 | 7 |
| 2008 | 0 | 4 |
| 2009 | 4 | 3 |
| 2010 | 5 | 10 |
| 2011 | 6 | 4 |
| 2012 | 3 | 5 |
| 2013 | 7 | 4 |
| 2014 | 5 | 7 |
| 2015 | 3 | 8 |
| 2016 | 8 | 2 |
| 2017 | 3 | 4 |
| 2018 | 2 | 4 |
| 2019 | 1 | 4 |
| 2020 | 6 | 10 |
| 2021 | 5 | 8 |
| 2022 | 7 | 7 |
| 2023 | 6 | 7 |
| 2024 | 6 | 6 |
| 2025 | 3 | 5 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fibrous structures4 Aug 2026US 12,698,594 B2The Procter & Gamble Company
- Support body and paper machine comprising such a support body3 Feb 2026US 12,540,434 B2Valmet Corporation
- Methods, devices, and systems for seal strip zone module strip position determination21 Oct 2025US 12,448,733 B2Stowe Woodward Licensco, LLC
- Creped fibrous structures15 Jul 2025US 12,359,376 B2The Procter & Gamble Company
- Roller11 Feb 2025US 12,221,749 B2Voith Patent GmbH
- Press arrangement and method for pressing a fibrous web22 Jan 2026US 2026/0022517 A1Voith Patent GmbH
- Sheet manufacturing apparatus and method of manufacturing sheets29 May 2025US 2025/0171960 A1Seiko Epson Corporation
- Sheet manufacturing apparatus and method of manufacturing sheets29 May 2025US 2025/0171961 A1Seiko Epson Corporation
- Sheet manufacturing apparatus3 Apr 2025US 2025/0109552 A1Seiko Epson Corporation
- Continuous papermaking machines and methods for continuous papermaking20 Mar 2025US 2025/0092602 A1
Most cited
By later US patents
- Method and apparatus of sheet transfer using a nonporous smooth surfaced belt93US 4,483,745 ABeloit Corporation · 1984
- Transfer belt in a press nip closed draw transfer90US 5,298,124 AAlbany International Corp. · 1994
- Papermaking machine employing an impermeable transfer belt, and associated methods90US 7,811,418 B2Metso Paper Karlstad AB · 2010
- Method and device for enhancing the run of a paper web in a paper machine80US 5,865,955 AValmet Corporation · 1999
- Device and method for producing a material web80US 8,382,956 B2Voith Patent GmbH · 2013