D21G 1/0233
Soft rolls
Official title: {Soft rolls}
D21G1/0233 (Soft rolls) appears on 104 US grants and 61 published applications in this corpus.
Search patents in D21G- Granted patents
- 104
- Published applications
- 61
- Assignees
- 39
- Inventors
- 164
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 11 | 3 |
| 2002 | 12 | 3 |
| 2003 | 9 | 4 |
| 2004 | 5 | 7 |
| 2005 | 5 | 4 |
| 2006 | 3 | 1 |
| 2007 | 1 | 4 |
| 2008 | 0 | 1 |
| 2009 | 0 | 3 |
| 2010 | 1 | 4 |
| 2011 | 1 | 0 |
| 2012 | 2 | 0 |
| 2013 | 1 | 2 |
| 2014 | 1 | 3 |
| 2015 | 1 | 6 |
| 2016 | 2 | 1 |
| 2017 | 1 | 3 |
| 2018 | 1 | 1 |
| 2019 | 2 | 0 |
| 2020 | 2 | 0 |
| 2021 | 0 | 1 |
| 2022 | 2 | 2 |
| 2023 | 0 | 3 |
| 2024 | 2 | 3 |
| 2025 | 1 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Roll cover and roll30 Jun 2026US 12,668,922 B2Voith Patent GmbH
- Press cover for a shoe press or transport belt with improved hydrophobicity16 Jun 2026US 12,655,244 B2Voith Patent GmbH
- Roller11 Feb 2025US 12,221,749 B2Voith Patent GmbH
- Packing paper23 Apr 2024US 11,965,291 B2Mondi AG
- Technical roll, in particular for paper manufacturing, method for introducing a polymer fibre into an empty conduit of a technical roll, and use of a polymer fibre27 Feb 2024US 11,913,171 B2SchäFerrolls GmbH & Co. KG
- Collar for compressing sleeve on drum4 Jun 2026US 2026/0151982 A1Suominen Oyj
- A sleeve for a drum7 May 2026US 2026/0125836 A1Suominen Oyj
- Polyurethane, roller covering and production method4 Jul 2024US 2024/0218106 A1Voith Patent GmbH
- Roll cover and roll7 Mar 2024US 2024/0076833 A1Voith Patent GmbH
- Roll cover and roll29 Feb 2024US 2024/0068164 A1Voith Patent GmbH
Most cited
By later US patents
- Process for producing hard roll35US 5,091,027 AYamauchi Corporation · 1992
- Method and apparatus for temperature gradient calendering31US 4,606,264 AWartsila-Appleton, Incorporated · 1986
- Calender roll for supercalender30US 4,324,177 AFuji Photo Film Co., Ltd. · 1982
- Coated roll for a paper making machine27US 5,023,985 AValmet Paper Machinery Inc. · 1991
- Method for calendering a paper or an equivalent web material and a calender that makes use of the method25US 5,438,920 AValmet Paper Machinery Inc. · 1995