D21F 1/40
Rolls
D21F1/40 (Rolls) appears on 65 US grants and 49 published applications in this corpus.
Search patents in D21F- Granted patents
- 65
- Published applications
- 49
- Assignees
- 41
- Inventors
- 129
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 12 |
| 2003 | 4 | 0 |
| 2004 | 5 | 2 |
| 2005 | 2 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 2 | 4 |
| 2009 | 0 | 1 |
| 2010 | 2 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 1 | 2 |
| 2015 | 1 | 0 |
| 2016 | 1 | 2 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 2 |
| 2020 | 2 | 2 |
| 2021 | 1 | 4 |
| 2022 | 4 | 1 |
| 2023 | 3 | 2 |
| 2024 | 0 | 2 |
| 2025 | 3 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Belt4 Aug 2026US 12,698,593 B2Valmet Technologies Oy
- Methods, devices, and systems for seal strip zone module strip position determination21 Oct 2025US 12,448,733 B2Stowe Woodward Licensco, LLC
- Papermaking machine that utilizes only a structured fabric in the forming of paper9 Sep 2025US 12,410,560 B2Structured I, LLC
- Roller11 Feb 2025US 12,221,749 B2Voith Patent GmbH
- Spreader roll3 Oct 2023US 11,772,924 B2Kampf Schneid- und Wickeltechnik GmbH & Co. KG
- Papermaking machine that utilizes only a structured fabric in the forming of paper4 Dec 2025US 2025/0369184 A1Structured I, LLC
- Method for adjustment of a component23 Jan 2025US 2025/0029231 A1Voith Patent GmbH
- Methods, devices, and systems for seal strip zone module strip position determination9 Jan 2025US 2025/0012012 A1Stowe Woodward Licensco, LLC
- Papermaking machine that utilizes only a structured fabric in the forming of paper7 Nov 2024US 2024/0368836 A1Structured I, LLC
- Belt27 Jun 2024US 2024/0209571 A1Valmet Technologies Oy
Most cited
By later US patents
- Fiber-reinforced plastic cylinder with an outer wear-resistant layer of filler-containing plastic and a method for producing the same32US 5,387,172 ASigri Great Lakes Carbon GmbH · 1995
- Web pressurizing channeled roller and method29US 6,125,754 A2000
- Web tension profile measuring method and roll applying the same22US 7,444,862 B2Metso Paper, Inc. · 2008
- Perforated roll for guiding a flexible material web20US 5,915,648 AVoith Sulzer Papiermaschinen GmbH · 1999
- Bearing lubrication system for bowed rolls17US 3,951,480 AAlbany International Corp. · 1976