D21F 5/16
Drying webs by electrical heating
D21F5/16 (Drying webs by electrical heating) appears on 48 US grants and 6 published applications in this corpus.
Search patents in D21F- Granted patents
- 48
- Published applications
- 6
- Assignees
- 14
- Inventors
- 35
- Latest grant
- 21 Jun 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Moulding of articles21 Jun 2022US 11,365,518 B2Natural Resources (2000) Limited
- Induction heating unit and fixing device and image forming apparatus including this5 Jul 2016US 9,382,661 B2KYOCERA Document Solutions Inc.
- System for drying a web and process13 Jan 2004US 6,675,494 B1Voith Sulzer Papiertechnik Patent GmbH
- Method and drying section for dewatering a fibrous web5 Nov 2002US 6,473,997 B1Equitor OY
- Method and device for moisture profiling15 Oct 2002US 6,463,677 B2Voith Sulzer Papiertechnik Patent GmbH
- Yankee drier for paper production6 Nov 2025US 2025/0341055 A1Toscotec S.P.A.
- Papermaking machine6 Nov 2025US 2025/0341056 A1Toscotec S.P.A.
- Method of drying paper using inductive energy and related papermaking machine dryer section and industrial textiles18 Jan 2024US 2024/0018719 A1AstenJohnson International, Inc.
- Moulding of articles6 Jun 2019US 2019/0169800 A1Natural Resources (2000) Limited
- Induction heating unit and fixing device and image forming apparatus including this31 Dec 2015US 2015/0378291 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- System for making a non-woven sheet by creating an electrostatic field action52US 3,977,937 A1976
- Apparatus for removing liquid from liquid bearing material31US 4,057,482 A1977
- Drying system26US 4,359,826 AThe Mead Corporation · 1982
- Dielectric heating arrangement for drying a continuously moving web of material21US 3,952,421 AChemetron Corporation · 1976
- Liquid removing method and apparatus20US 3,931,682 A1976