D21G 1/0253
Heating or cooling the rolls
Official title: {Heating or cooling the rolls; Regulating the temperature}
D21G1/0253 (Heating or cooling the rolls) appears on 125 US grants and 64 published applications in this corpus.
Search patents in D21G- Granted patents
- 125
- Published applications
- 64
- Assignees
- 70
- Inventors
- 243
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 8 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 2 |
| 2002 | 7 | 9 |
| 2003 | 3 | 6 |
| 2004 | 9 | 2 |
| 2005 | 1 | 4 |
| 2006 | 2 | 1 |
| 2007 | 1 | 5 |
| 2008 | 1 | 3 |
| 2009 | 1 | 4 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 3 |
| 2015 | 2 | 3 |
| 2016 | 1 | 0 |
| 2017 | 0 | 2 |
| 2018 | 0 | 2 |
| 2019 | 1 | 1 |
| 2020 | 4 | 2 |
| 2021 | 0 | 2 |
| 2022 | 3 | 6 |
| 2023 | 2 | 1 |
| 2024 | 0 | 2 |
| 2025 | 1 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and device for producing or treating a web of fibrous material14 Apr 2026US 12,601,116 B2Voith Patent GmbH
- Calender and method for treating web-like materials3 Mar 2026US 12,565,724 B2Futura S.P. A.
- Corrugating roller having enhanced heat transfer effectiveness27 May 2025US 12,311,633 B2SRC, Inc.
- Fiber structure manufacturing apparatus and fiber structure manufacturing method5 Sep 2023US 11,746,469 B2Seiko Epson Corporation
- Smooth and low density paperboard structures and methods for manufacturing the same11 Jul 2023US 11,697,908 B2WestRock MWV, LLC
- Fiber body production apparatus and fiber body production method12 Mar 2026US 2026/0071383 A1Seiko Epson Corporation
- Roller Having Heating Device, Printing Unit, Embossing Unit, and/or Rolling Mill Having Such a Roller and Method for Converting a Heating Device of a Roller22 Jan 2026US 2026/0021523 A1
- Heating Device for Heating a Roller, Roller, and a Calender or Embossing Cassette27 Feb 2025US 2025/0065541 A1
- Calender and method for treating web-like meterials16 May 2024US 2024/0158975 A1Futura S.P. A.
- Method and device for producing or treating a web of fibrous material14 Mar 2024US 2024/0084509 A1Voith Patent GmbH
Most cited
By later US patents
- Apparatus for controlling the heating and cooling of a roll45US 5,079,817 AEduard Kusters Maschinenfabrik GmbH & Co. KG · 1992
- Hot air calender roll controller44US 4,768,433 AMeasurex Corporation · 1988
- Calendar33US 4,498,383 AKleinewefers GmbH · 1985
- Apparatus and method for electromagnetic heating of a roll32US 4,675,487 AValmet Corporation · 1987
- Method and apparatus in the calendering of a web30US 4,653,395 AValmet Corporation · 1987