Method for determining film thickness, method for producing a film and device for producing a film
US-12398996-B2 · Aug 26, 2025 · US
Dryer section of machines for making continuous webs of paper
Dryer 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 | D21F5/00 |
| Official title | Dryer section of machines for making continuous webs of paper |
| Display label | Dryer section of machines for making continuous webs of paper |
| Total patents | 55 |
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 | 5 |
| 2016 | 12 |
| 2017 | 10 |
| 2018 | 9 |
| 2019 | 1 |
| 2020 | 5 |
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cellulose based film structure and method for producing the same
US-11661703-B2 · May 30, 2023 · US
Method for identifying defects in a film, method and device for producing a film
US-2023009598-A1 · Jan 12, 2023 · US
Method for determining film thickness, method for producing a film and device for producing a film
US-2023003509-A1 · Jan 5, 2023 · US
Dryer fabric with warp yarns of multiple materials
US-11512430-B2 · Nov 29, 2022 · US
Method for the production of a coated paper, paperboard or film and a coated paper, paperboard or film
US-11504956-B2 · Nov 22, 2022 · US
Tissue paper making machine and a method of operating a tissue paper making machine
US-11220785-B2 · Jan 11, 2022 · US
Cellulose based film structure and method for producing the same
US-2021301464-A1 · Sep 30, 2021 · US
A tissue paper making machine and a method of operating a tissue paper making machine
US-2021246613-A1 · Aug 12, 2021 · US
Cellulose based film structure and method for producing the same
US-11047091-B2 · Jun 29, 2021 · US
Sheet manufacturing apparatus, sheet manufacturing system, control method of a sheet manufacturing apparatus, and sheet manufacturing method
US-11008707-B2 · May 18, 2021 · US
Dryer Fabric with Warp Yarns of Multiple Materials
US-2021102339-A1 · Apr 8, 2021 · US
Ink fixative solutions
US-10914036-B2 · Feb 9, 2021 · US
Cellulose based film structure and method for producing the same
US-2020325626-A1 · Oct 15, 2020 · US
Absorbent sheets having high absorbency and high caliper, and methods of making soft, absorbent sheets
US-10704203-B2 · Jul 7, 2020 · US
Paper products and methods and systems for manufacturing such products
US-10619308-B2 · Apr 14, 2020 · US
Method for manufacturing filter medium for air filter
US-10556197-B2 · Feb 11, 2020 · US
A method for the production of a coated paper, paperboard or film and a coated paper, paperboard or film
US-2020023627-A1 · Jan 23, 2020 · US
Sheet manufacturing apparatus, sheet manufacturing system, control method of a sheet manufacturing apparatus, and sheet manufacturing method
US-2019062996-A1 · Feb 28, 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
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21F5/00?
- CPC D21F5/00 is the Cooperative Patent Classification code for “Dryer section of machines for making continuous webs of paper.”
- How many patents are filed under CPC D21F5/00 (Dryer section of machines for making continuous webs of paper)?
- Our database includes 55 publications tagged with this CPC code.
- Is patent activity under CPC D21F5/00 growing?
- Publication counts under this code: 3 in 2023 vs 1 in 2025 (latest complete years).