Sheet manufacturing apparatus
US-2026062865-A1 · Mar 5, 2026 · US
Press section of machines for making continuous webs of paper
Press section of machines for making continuous webs of paper · 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 | D21F3/00 |
| Official title | Press section of machines for making continuous webs of paper |
| Display label | Press section of machines for making continuous webs of paper |
| Total patents | 43 |
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 | 1 |
| 2016 | 5 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 7 |
| 2020 | 3 |
| 2021 | 9 |
| 2022 | 2 |
| 2023 | 5 |
| 2024 | 4 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pore removal from screen devices to increase flow uniformity
US-12392090-B2 · Aug 19, 2025 · US
Information providing apparatus, information providing method, and non-transitory computer readable recording medium
US-2024410834-A1 · Dec 12, 2024 · US
Fiber molding tool flow structures
US-2024287740-A1 · Aug 29, 2024 · US
Press Felt
US-2024175208-A1 · May 30, 2024 · US
Sheet producing method and sheet producing apparatus
US-11866885-B2 · Jan 9, 2024 · US
Sheet manufacturing apparatus
US-11814791-B2 · Nov 14, 2023 · US
Molding roll for making paper products
US-11802375-B2 · Oct 31, 2023 · US
Pore removal from screen devices to increase flow uniformity
US-2023256679-A1 · Aug 17, 2023 · US
Sheet producing method and sheet producing apparatus
US-2023062328-A1 · Mar 2, 2023 · US
Method and apparatus for producing a fiber web
US-11585047-B2 · Feb 21, 2023 · US
Sheet manufacturing apparatus
US-2022098792-A1 · Mar 31, 2022 · US
3d printed articles for use in pulp molding die
US-2022018071-A1 · Jan 20, 2022 · US
Equipment for manufacturing fiber structure, method for manufacturing fiber structure, and fiber structure
US-2021230802-A1 · Jul 29, 2021 · US
Re-dispersed microfibrillated cellulose
US-2021221920-A1 · Jul 22, 2021 · US
Method and apparatus for producing a fibre web
US-2021156089-A1 · May 27, 2021 · US
Re-dispersed microfibrillated cellulose
US-11001644-B2 · May 11, 2021 · US
Measuring device, web processing device, fiber feedstock recycling device, and measuring method
US-11001966-B2 · May 11, 2021 · US
Molding roll for making paper products
US-2021087749-A1 · Mar 25, 2021 · US
Method and apparatus for producing a fibre web
US-10954632-B2 · Mar 23, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21F3/00?
- CPC D21F3/00 is the Cooperative Patent Classification code for “Press section of machines for making continuous webs of paper.”
- How many patents are filed under CPC D21F3/00 (Press section of machines for making continuous webs of paper)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC D21F3/00 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).