Sheet manufacturing apparatus and control method for sheet manufacturing apparatus
US-11193238-B2 · Dec 7, 2021 · US
of the Fourdrinier type
of the Fourdrinier type · 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 | D21F9/02 |
| Official title | of the Fourdrinier type |
| Display label | of the Fourdrinier type |
| Total patents | 111 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 10 |
| 2017 | 8 |
| 2018 | 11 |
| 2019 | 9 |
| 2020 | 15 |
| 2021 | 11 |
| 2022 | 10 |
| 2023 | 5 |
| 2024 | 13 |
| 2025 | 13 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
A fabric for a web-producing machine and such a machine with a corresponding fabric
US-2021310192-A1 · Oct 7, 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 of forming a three-layer board web and a forming section of forming a three-layer board web
US-2020407916-A1 · Dec 31, 2020 · US
Fiber assembly-forming method and fiber assembly-forming apparatus
US-2020385924-A1 · Dec 10, 2020 · US
Creped fibrous structures
US-2020354896-A1 · Nov 12, 2020 · US
Processing device, sheet manufacturing apparatus, processing method, and sheet manufacturing method
US-10781554-B2 · Sep 22, 2020 · US
Packaging material and method for making the same
US-10760220-B2 · Sep 1, 2020 · US
Defibrated material manufacturing device, and sheet manufacturing apparatus
US-2020270814-A1 · Aug 27, 2020 · US
Differential pillow height fibrous structures
US-10745864-B2 · Aug 18, 2020 · US
Creped fibrous structures
US-10745865-B2 · Aug 18, 2020 · US
Defibrated material manufacturing device, and sheet manufacturing apparatus
US-10676867-B2 · Jun 9, 2020 · US
Method of making a structured fibrous web and a creped fibrous web
US-10633794-B2 · Apr 28, 2020 · US
Process and device for manufacturing a laminated material comprising a fibrillated cellulose layer
US-10618015-B2 · Apr 14, 2020 · US
Fibrous Structures
US-2020109520-A1 · Apr 9, 2020 · US
Machine and method for the production of a fibrous web
US-2020087857-A1 · Mar 19, 2020 · US
Method for manufacturing inorganic particle composite fiber sheet
US-2020024804-A1 · Jan 23, 2020 · US
Fibrous structures
US-10538881-B2 · Jan 21, 2020 · US
Method of making a structured fibrous web and a creped fibrous web
US-2019284761-A1 · Sep 19, 2019 · US
Paper trim cut measurement device and method
US-2019249366-A1 · Aug 15, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21F9/02?
- CPC D21F9/02 is the Cooperative Patent Classification code for “of the Fourdrinier type.”
- How many patents are filed under CPC D21F9/02 (of the Fourdrinier type)?
- Our database includes 111 publications tagged with this CPC code.
- Is patent activity under CPC D21F9/02 growing?
- Publication counts under this code: 13 in 2024 vs 13 in 2025 (latest complete years).