Hemp paper packaging material for foodstuff
US-12553184-B2 · Feb 17, 2026 · 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 | D21F11/02 |
| Official title | of the Fourdrinier type |
| Display label | of the Fourdrinier type |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 6 |
| 2023 | 7 |
| 2024 | 7 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Installation and method for producing a fibrous material web
US-12546060-B2 · Feb 10, 2026 · US
Method for manufacturing films comprising highly refined cellulose fibers
US-12467202-B2 · Nov 11, 2025 · US
Method for manufacturing a film comprising highly refined cellulose fibers
US-12366036-B2 · Jul 22, 2025 · US
Hemp paper packaging material for foodstuff
US-2024337069-A1 · Oct 10, 2024 · US
Cupstock with rim-formation index and associated methods and rimmed cup products
US-2024253322-A1 · Aug 1, 2024 · US
Fibrous sheet with improved properties
US-12043963-B2 · Jul 23, 2024 · US
Method and machine for producing a material web in a paper machine
US-2024240402-A1 · Jul 18, 2024 · US
Method For Manufacturing Colored Fiber Body And Composite Body
US-2024181672-A1 · Jun 6, 2024 · US
Cupstock with rim-formation index and associated methods and rimmed cup products
US-11975503-B2 · May 7, 2024 · US
Installation and method for producing a fibrous material web
US-2024084508-A1 · Mar 14, 2024 · US
Method for producing fiber mat and fiber mat
US-2023416987-A1 · Dec 28, 2023 · US
Sheet manufacturing apparatus
US-11834782-B2 · Dec 5, 2023 · US
Method for manufacturing films comprising highly refined cellulose fibers
US-2023349099-A1 · Nov 2, 2023 · US
Method for manufacturing a film comprising highly refined cellulose fibers
US-2023313464-A1 · Oct 5, 2023 · US
Sheet manufacturing method and sheet manufacturing apparatus
US-11753769-B2 · Sep 12, 2023 · 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
Sheet manufacturing method and sheet manufacturing apparatus
US-2022316139-A1 · Oct 6, 2022 · US
Method for producing wet-running friction paper, and wet-running friction paper
US-2022243779-A1 · Aug 4, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21F11/02?
- CPC D21F11/02 is the Cooperative Patent Classification code for “of the Fourdrinier type.”
- How many patents are filed under CPC D21F11/02 (of the Fourdrinier type)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC D21F11/02 growing?
- Publication counts under this code: 7 in 2024 vs 2 in 2025 (latest complete years).