Roller
US-12221749-B2 · Feb 11, 2025 · US
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Rolls
Rolls · Cooperative Patent Classification (CPC)
Textile and paper production, treatment, and products.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | D21F1/40 |
| Official title | Rolls |
| Display label | Rolls |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for adjustment of a component
US-2025029231-A1 · Jan 23, 2025 · US
Belt
US-2024209571-A1 · Jun 27, 2024 · US
Fiber web machine sleeve roll belt
US-11725344-B2 · Aug 15, 2023 · US
Roller
US-2023117841-A1 · Apr 20, 2023 · US
Sleeve roll belt in fiber web machine
US-11619003-B2 · Apr 4, 2023 · US
Cellulose and cellulose ester film
US-11525215-B2 · Dec 13, 2022 · US
Sleeve Roll Belt in Fiber Web Machine
US-2022275579-A9 · Sep 1, 2022 · US
Fiber Web Machine Sleeve Roll Belt
US-2021363698-A1 · Nov 25, 2021 · US
Sleeve Roll Belt in Fiber Web Machine
US-2021363697-A1 · Nov 25, 2021 · US
Roll and its use
US-10900173-B2 · Jan 26, 2021 · US
Press for a machine for producing a fibrous material web
US-10612192-B2 · Apr 7, 2020 · US
Cellulose and cellulose ester film
US-2020063353-A1 · Feb 27, 2020 · US
Roll and its use
US-2019161913-A1 · May 30, 2019 · US
Press for a machine for producing a fibrous material web
US-2018371693-A1 · Dec 27, 2018 · US
Spreader roll
US-9803318-B2 · Oct 31, 2017 · US
Spreader roll
US-2016333522-A1 · Nov 17, 2016 · US
Sheet manufacturing apparatus
US-2016145801-A1 · May 26, 2016 · US
Corrosion-resistant roller coating
US-9322132-B2 · Apr 26, 2016 · US
Roll
US-2016010284-A1 · Jan 14, 2016 · US