D21G 1/028
Using electrical means
Official title: {using electrical means}
D21G1/028 (Using electrical means) appears on 26 US grants and 18 published applications in this corpus.
Search patents in D21G- Granted patents
- 26
- Published applications
- 18
- Assignees
- 22
- Inventors
- 52
- Latest grant
- 7 Jul 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 4 |
| 2003 | 2 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sheet manufacturing apparatus and sheet manufacturing method7 Jul 2020US 10,704,198 B2Seiko Epson Corporation
- Induction heated roll apparatus19 Feb 2019US 10,212,764 B2Tokuden Co., Ltd.
- Method and apparatus for water-cooling power modules in an induction calendering control actuator system used on web manufacturing processes16 Mar 2010US 7,679,035 B2ABB AB
- Heating of calender roll surfaces31 Aug 2004US 6,782,808 B2The Goodyear Tire & Rubber Company
- Method and device for induction heating a roll10 Feb 2004US 6,689,993 B2Metso Automation Oy
- 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
- Heating device for calender cylinders1 Dec 2022US 2022/0386421 A1Pht - Petrelli Heating Technologies S.R.L.
- Sheet manufacturing apparatus and sheet manufacturing method23 Aug 2018US 2018/0237992 A1Seiko Epson Corporation
- Induction heated roll apparatus29 Oct 2015US 2015/0312970 A1Tokuden Co., Ltd.
Most cited
By later US patents
- Apparatus and method for electromagnetic heating of a roll32US 4,675,487 AValmet Corporation · 1987
- Method for heating a cylinder or roll with an electrically conductive ceramic outer layer26US 4,948,466 AValmet Paper Machinery Inc. · 1990
- Roller apparatus with magnetic induction heating arrangement21US 5,895,598 ATokuden Co., Ltd. · 1999
- Method for eddy current heating a roll in a paper machine17US 4,614,565 AValmet Corporation · 1986
- Induction heating roller apparatus13US 5,393,959 ATokuden Co., Ltd. · 1995