D21F 5/042
In combination with suction or blowing devices
Official title: {in combination with suction or blowing devices}
D21F5/042 (In combination with suction or blowing devices) appears on 306 US grants and 74 published applications in this corpus.
Search patents in D21F- Granted patents
- 306
- Published applications
- 74
- Assignees
- 64
- Inventors
- 341
- Latest grant
- 30 May 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 10 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 8 | 0 |
| 1990 | 15 | 0 |
| 1991 | 19 | 0 |
| 1992 | 14 | 0 |
| 1993 | 12 | 0 |
| 1994 | 13 | 0 |
| 1995 | 17 | 0 |
| 1996 | 25 | 0 |
| 1997 | 13 | 0 |
| 1998 | 17 | 0 |
| 1999 | 21 | 0 |
| 2000 | 18 | 0 |
| 2001 | 10 | 2 |
| 2002 | 9 | 7 |
| 2003 | 6 | 7 |
| 2004 | 6 | 5 |
| 2005 | 6 | 5 |
| 2006 | 5 | 9 |
| 2007 | 1 | 4 |
| 2008 | 5 | 4 |
| 2009 | 3 | 12 |
| 2010 | 4 | 4 |
| 2011 | 3 | 4 |
| 2012 | 5 | 0 |
| 2013 | 3 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 1 | 3 |
| 2019 | 2 | 2 |
| 2020 | 1 | 1 |
| 2021 | 2 | 1 |
| 2022 | 2 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Cellulose based film structure and method for producing the same30 May 2023US 11,661,703 B2Teknologian tutkimuskeskus VTT Oy
- Machine for dewatering and drying a fibrous web29 Mar 2022US 11,286,617 B2Voith Patent GmbH
- Yankee drying hood arrangement, a Yankee drying cylinder fitted with a Yankee drying hood arrangement and a method of drying a fibrous web8 Mar 2022US 11,268,240 B2Valmet Corporation
- Drying hood, drying arrangement and use thereof14 Sep 2021US 11,118,310 B2Voith Patent GmbH
- Cellulose based film structure and method for producing the same29 Jun 2021US 11,047,091 B2Teknologian tutkimuskeskus VTT Oy
- Seal strip temperature monitoring systems and assemblies therefor14 Mar 2024US 2024/0085244 A1Stowe Woodward Licensco, LLC
- A yankee drying hood arrangement, a yankee drying cylinder fitted with a yankee drying hood arrangement and a method of drying a fibrous web10 Feb 2022US 2022/0042244 A1Valmet Corporation
- Cellulose based film structure and method for producing the same30 Sep 2021US 2021/0301464 A1Teknologian tutkimuskeskus VTT Oy
- Cellulose based film structure and method for producing the same15 Oct 2020US 2020/0325626 A1Teknologian tutkimuskeskus VTT Oy
- Drying hood, drying arrangement and use thereof5 Dec 2019US 2019/0368127 A1Voith Patent GmbH
Most cited
By later US patents
- Device in the drying section of a paper machine63US 4,441,263 AValmet Corporation · 1984
- Paper machine drying section and method for operating same58US 4,202,113 AValmet Corporation · 1980
- High speed paper drying58US 4,359,827 AWeyerhaeuser Company · 1982
- Method and machine for drying a material web with guide rollers58US 5,829,164 AVoith Sulzer Papiermaschinen GmbH · 1998
- Vacuum box for use in high speed papermaking56US 4,359,828 AWeyerhaeuser Company · 1982