Sheet manufacturing apparatus and sheet production method
US-2025369186-A1 · Dec 4, 2025 · US
Transferring continuous webs from wet ends to press sections
Transferring continuous webs from wet ends to press sections · 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 | D21F2/00 |
| Official title | Transferring continuous webs from wet ends to press sections |
| Display label | Transferring continuous webs from wet ends to press sections |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 10 |
| 2020 | 7 |
| 2021 | 11 |
| 2022 | 3 |
| 2023 | 6 |
| 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
US-2025314013-A1 · Oct 9, 2025 · US
Sheet manufacturing apparatus
US-2024426054-A1 · Dec 26, 2024 · US
Device and method for transferring a strip of a web
US-11946203-B2 · Apr 2, 2024 · US
Web transportation apparatus and fiber article producing apparatus
US-11807985-B2 · Nov 7, 2023 · US
Method of making a molded paper web
US-11732416-B2 · Aug 22, 2023 · US
Device and method for producing a pulp web
US-11702796-B2 · Jul 18, 2023 · US
Web transportation apparatus and fiber article producing apparatus
US-2023075175-A1 · Mar 9, 2023 · US
Device and Method for Producing a Pulp Web
US-2023064891-A1 · Mar 2, 2023 · US
Method for identifying defects in a film, method and device for producing a film
US-2023009598-A1 · Jan 12, 2023 · US
Method and device for treating a fibrous material web in a long nip pressing unit
US-11414816-B2 · Aug 16, 2022 · US
Device and Method for Transferring a Strip of a Web
US-2022205182-A1 · Jun 30, 2022 · US
Suction device
US-2022127095-A1 · Apr 28, 2022 · US
Method of making a molded paper web
US-2021395948-A1 · Dec 23, 2021 · US
Paper trim cut measurement device and method
US-11198971-B2 · Dec 14, 2021 · US
Methods of making paper products using a molding roll
US-11136719-B2 · Oct 5, 2021 · US
Methods of making paper products using a patterned cylinder
US-11105044-B2 · Aug 31, 2021 · US
Equipment for manufacturing fiber structure, method for manufacturing fiber structure, and fiber structure
US-2021230802-A1 · Jul 29, 2021 · US
Methods of making paper products using a molding roll
US-11035077-B2 · Jun 15, 2021 · US
Method and Device for Treating a Fibrous Material Web in a Long Nip Pressing Unit
US-2021087746-A1 · Mar 25, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21F2/00?
- CPC D21F2/00 is the Cooperative Patent Classification code for “Transferring continuous webs from wet ends to press sections.”
- How many patents are filed under CPC D21F2/00 (Transferring continuous webs from wet ends to press sections)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC D21F2/00 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).