D21F 3/086
Having a grooved surface
Official title: {having a grooved surface}
D21F3/086 (Having a grooved surface) appears on 34 US grants and 20 published applications in this corpus.
Search patents in D21F- Granted patents
- 34
- Published applications
- 20
- Assignees
- 20
- Inventors
- 57
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 2 | 1 |
| 2015 | 1 | 5 |
| 2016 | 2 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 3 |
| 2021 | 0 | 3 |
| 2022 | 0 | 0 |
| 2023 | 4 | 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
- Roll cover and roll30 Jun 2026US 12,668,922 B2Voith Patent GmbH
- Shoe press belt and method for producing a shoe press belt8 Aug 2023US 11,718,958 B2Ichikawa Co., Ltd.
- Shoe press belt and method for producing a shoe press belt27 Jun 2023US 11,686,045 B2Ichikawa Co., Ltd.
- Device for micro-embossing of paper and paper processing line comprising said device18 Apr 2023US 11,628,645 B2Gambini S.P.A.
- Shoe press belt and method for producing a shoe press belt14 Mar 2023US 11,603,628 B2Ichikawa Co., Ltd.
- Roll cover and roll29 Feb 2024US 2024/0068164 A1Voith Patent GmbH
- Shoe press belt and method for producing a shoe press belt2 Sep 2021US 2021/0269977 A1Ichikawa Co., Ltd.
- Shoe press belt and method for producing a shoe press belt2 Sep 2021US 2021/0269978 A1Ichikawa Co., Ltd.
- Shoe press belt and method for producing a shoe press belt2 Sep 2021US 2021/0269979 A1Ichikawa Co., Ltd.
- Device for micro-embossing of paper and paper processing line comprising said device15 Oct 2020US 2020/0324506 A1Gambini S.P.A.
Most cited
By later US patents
- Apparatus and method for removing fluid from a fibrous web44US 5,152,874 ABeloit Corporation · 1992
- Press roll and press in a paper making machine31US 4,559,106 AValmet Corporation · 1985
- Paper making machine, an extended nip roll and a method of producing tissue paper31US 9,410,287 B2Valmet Aktiebolag · 2016
- Use of anisotropic rubber for venta-nip rolls19US 4,353,296 ABeloit Corporation · 1982
- Method of making a helically grooved roller15US 4,192,050 A1980