D21F 5/044
Using air hoods over the cylinders
Official title: {using air hoods over the cylinders}
D21F5/044 (Using air hoods over the cylinders) appears on 74 US grants and 30 published applications in this corpus.
Search patents in D21F- Granted patents
- 74
- Published applications
- 30
- Assignees
- 27
- Inventors
- 148
- Latest grant
- 30 May 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 2 | 1 |
| 2002 | 7 | 2 |
| 2003 | 3 | 2 |
| 2004 | 1 | 3 |
| 2005 | 3 | 2 |
| 2006 | 1 | 3 |
| 2007 | 1 | 2 |
| 2008 | 2 | 1 |
| 2009 | 2 | 4 |
| 2010 | 2 | 2 |
| 2011 | 2 | 2 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 2 |
| 2019 | 2 | 1 |
| 2020 | 0 | 1 |
| 2021 | 2 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Cellulose based film structure and method for producing the same30 May 2023US 11,661,703 B2Teknologian tutkimuskeskus VTT Oy
- 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
- Yankee drying hood arrangement, a yankee drying cylinder fitted with a yankee drying hood arrangement and a method of drying a fibrous web16 Apr 2019US 10,260,200 B2Valmet Corporation
- 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
- Through-air drying apparatus and methods of manufacture20 Dec 2018US 2018/0363243 A1Kimberly-Clark Worldwide, Inc.
Most cited
By later US patents
- Method for drying a surface-treated paper web in an after-dryer of a paper machine and after-dryer of a paper machine38US 5,968,590 AValmet Corporation · 1999
- Apparatus for determining the humidity of exhaust air exiting a yankee dryer hood29US 5,456,025 AJames River Paper Company, Inc. · 1995
- Apparatus and method for regulating the profile of a paper web passing over a Yankee cylinder in an integrated IR-dryer/Yankee hood27US 4,942,675 AValmet Paper Machinery Inc. · 1990
- Paper web dryer and paper moisture profiling system25US 5,416,979 AJames River Paper Company, Inc. · 1995
- Drying module and dryer sections that make use of same, in particular for a high-speed paper machine25US 5,495,678 AValmet Paper Machinery Inc. · 1996