D21G 1/022
The means using fluid pressure
Official title: {the means using fluid pressure}
D21G1/022 (The means using fluid pressure) appears on 241 US grants and 36 published applications in this corpus.
Search patents in D21G- Granted patents
- 241
- Published applications
- 36
- Assignees
- 51
- Inventors
- 196
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 8 | 0 |
| 1978 | 8 | 0 |
| 1979 | 0 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 10 | 0 |
| 1988 | 13 | 0 |
| 1989 | 14 | 0 |
| 1990 | 10 | 0 |
| 1991 | 12 | 0 |
| 1992 | 14 | 0 |
| 1993 | 11 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 10 | 0 |
| 1998 | 19 | 0 |
| 1999 | 17 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 9 | 10 |
| 2003 | 6 | 5 |
| 2004 | 6 | 4 |
| 2005 | 1 | 5 |
| 2006 | 5 | 1 |
| 2007 | 4 | 4 |
| 2008 | 0 | 3 |
| 2009 | 1 | 2 |
| 2010 | 2 | 0 |
| 2011 | 3 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pneumatic zone-controlled deflection compensation for roll18 Aug 2026US 12,709,842 B2Aalto University Foundation sr
- Deflection compensating roll27 Dec 2011US 8,083,657 B2Voith Patent GmbH
- Deflection controlled roll29 Mar 2011US 7,914,429 B2Voith Paper Patent GmbH
- Inner elongated structure of the roll of a paper/board machine or finishing machine8 Feb 2011US 7,883,454 B2Metso Paper, Inc.
- Sheet or film-forming roll, sheet or film-forming apparatus and crowning control method7 Dec 2010US 7,846,367 B2Toshiba Kikai Kabushiki Kaisha
- Pneumatic zone-controlled deflection compensation for roll9 May 2024US 2024/0150964 A1Aalto University Foundation sr
- Roller for applying contact pressure onto sheets of material3 Sep 2009US 2009/0218035 A1Texmag GmbH Vertriebsgesellschaft
- Deflection controlled roll15 Jan 2009US 2009/0018002 A1Voith Paper Patent GmbH
- Deflection Compensating Roll28 Aug 2008US 2008/0207418 A1Voith Patent GmbH
- Calender Unit for Producing and/or Processing Thin Films29 May 2008US 2008/0121122 A1
Most cited
By later US patents
- Roll with induction heating arrangement61US 5,074,019 ASulzer-Escher Wyss GmbH · 1991
- Roll for use in calenders and the like58US 4,729,153 AKleinewefers GmbH · 1988
- Arrangement containing a controlled deflection roll and related regulator48US 4,509,237 AEscher Wyss Limited · 1985
- Roll for use in calenders and the like45US 4,757,584 AKleinewefers GmbH · 1988
- Apparatus for controlling the heating and cooling of a roll45US 5,079,817 AEduard Kusters Maschinenfabrik GmbH & Co. KG · 1992