Sheet manufacturing apparatus and method of manufacturing sheets
US-2025171960-A1 · May 29, 2025 · US
in combination with a dryer roll
in combination with a dryer roll · 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 | D21F3/0281 |
| Official title | {in combination with a dryer roll} |
| Display label | in combination with a dryer roll |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sheet manufacturing apparatus and method of manufacturing sheets
US-2025171961-A1 · May 29, 2025 · US
Seamed felt and use of the seamed felt in a tissue machine
US-12060681-B2 · Aug 13, 2024 · US
Fabric and use of the fabric in a tissue machine
US-11920303-B2 · Mar 5, 2024 · US
Device and method for producing a pulp web
US-11702796-B2 · Jul 18, 2023 · US
Device and Method for Producing a Pulp Web
US-2023064891-A1 · Mar 2, 2023 · US
Seamed felt and use of the seamed felt in a tissue machine
US-2022228318-A1 · Jul 21, 2022 · US
Fabric and use of the fabric in a tissue machine
US-2022228317-A1 · Jul 21, 2022 · US
Sheet manufacturing apparatus
US-11298725-B2 · Apr 12, 2022 · US
Tissue paper making machine and a method of operating a tissue paper making machine
US-11220785-B2 · Jan 11, 2022 · US
Sheet manufacturing apparatus
US-2021276050-A1 · Sep 9, 2021 · US
A tissue paper making machine and a method of operating a tissue paper making machine
US-2021246613-A1 · Aug 12, 2021 · US
Method for making tissue paper
US-10808359-B2 · Oct 20, 2020 · US
A method for making tissue paper
US-2019316296-A1 · Oct 17, 2019 · US
System and methods involving fabricating sheet products
US-10337793-B2 · Jul 2, 2019 · US
Sheet manufacturing apparatus
US-10272623-B2 · Apr 30, 2019 · US
Process for producing at least one ply of a paper or board and a paper or board produced according to the process
US-10145068-B2 · Dec 4, 2018 · US
Sheet manufacturing apparatus
US-2018043644-A1 · Feb 15, 2018 · US
Sheet manufacturing apparatus, sheet manufacturing method, and sheet
US-9776365-B2 · Oct 3, 2017 · US
System and methods involving fabricating sheet products
US-2017234617-A1 · Aug 17, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21F3/0281?
- CPC D21F3/0281 is the Cooperative Patent Classification code for “in combination with a dryer roll.”
- How many patents are filed under CPC D21F3/0281 (in combination with a dryer roll)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC D21F3/0281 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).