D21F 1/76
With suction
Official title: with suction
D21F1/76 (With suction) appears on 18 US grants and 9 published applications in this corpus.
Search patents in D21F- Granted patents
- 18
- Published applications
- 9
- Assignees
- 15
- Inventors
- 36
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 1 | 2 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dewatering apparatus and process9 Jun 2026US 12,649,989 B2The Procter & Gamble Company
- Machine for dewatering and drying a fibrous web29 Mar 2022US 11,286,617 B2Voith Patent GmbH
- Method for producing a fibrous material web20 Oct 2020US 10,808,360 B2Andritz Inc.
- Pulp production arrangement and method12 Mar 2019US 10,227,728 B2Valmet Corporation
- Arrangement in a perforated roll of a fiber web machine and prefabricated sensor sheet for a perforated roll of a fiber web machine2 Oct 2018US 10,087,028 B2Valmet Technologies Oy
- Dewatering apparatus and process17 Sep 2026US 2026/0275635 A1The Procter & Gamble Company
- Dewatering apparatus and process5 Dec 2024US 2024/0401271 A1The Procter & Gamble Company
- Method for producing a fibrous material web28 Nov 2019US 2019/0360155 A1Andritz Inc.
- Machine for dewatering and drying a fibrous web4 Apr 2019US 2019/0100876 A1Voith Patent GmbH
- Process for production of a fibrous pulp web6 Apr 2017US 2017/0096775 A1Andritz Inc.
Most cited
By later US patents
- Apparatus for treating a fibre suspension13US 4,750,340 AKamyr, Inc. · 1988
- Vacuum filtration system and method of filtering pulp fibers from pulp slurry using the same13US 5,281,343 AIngersoll-Rand Company · 1994
- Distribution device for a device for dewatering pulp6US 6,668,600 B1Kvaerner Pulping AB · 2003
- Method for recovery of wastewater residues5US 4,481,072 AVsesojuznoe Nauchno-Proizvodstven Noe Obiedinenie Tselljulozno-Bumazhnoi Promyshlennosti · 1984
- Method and apparatus for treating a fiber suspension5US 5,264,138 AA. Ahlstrom Corporation · 1993