Cellulose-based gas barrier film
US-2025059710-A1 · Feb 20, 2025 · US
Subject matter not provided for in other groups of this subclass
Subject matter not provided for in other groups of this subclass · 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 | D21D99/00 |
| Official title | Subject matter not provided for in other groups of this subclass |
| Display label | Subject matter not provided for in other groups of this subclass |
| Total patents | 30 |
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 | 3 |
| 2016 | 2 |
| 2017 | 1 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 5 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Highly refined pulp from fibers obtained from used beverage cartons
US-2025043512-A1 · Feb 6, 2025 · US
A Method for Treating Textile Fibers of Different Lengths
US-2024410111-A1 · Dec 12, 2024 · US
Method for reducing starch content of an aqueous phase removed from fibre stock preparation
US-2024328089-A1 · Oct 3, 2024 · US
Refined cellulose fiber composition
US-12084563-B2 · Sep 10, 2024 · US
Method for fractionation of highly refined cellulose
US-2024141588-A1 · May 2, 2024 · US
Process for producing strong and soft tissue and towel products
US-2024060237-A1 · Feb 22, 2024 · US
Method and apparatus for controlling a fiber fractionation system
US-11834786-B2 · Dec 5, 2023 · US
Process for producing strong and soft tissue and towel products
US-11834787-B2 · Dec 5, 2023 · US
Fiber blend, method for producing fiber blend, and paperboard product comprising fiber blend
US-11629460-B2 · Apr 18, 2023 · US
Method of milling minerals in the presence of a poly (itaconate)
US-11578214-B2 · Feb 14, 2023 · US
Refined cellulose fiber composition
US-2022363871-A1 · Nov 17, 2022 · US
Process for producing strong and soft tissue and towel products
US-2021269974-A1 · Sep 2, 2021 · US
Process for producing strong and soft tissue and towel products
US-11047090-B2 · Jun 29, 2021 · US
Fiber blend, method for producing fiber blend, and paperboard product comprising fiber blend
US-2021180252-A1 · Jun 17, 2021 · US
Method and apparatus for controlling a fiber fractionation system
US-2021095422-A1 · Apr 1, 2021 · US
Fiber blend, method for producing fiber blend, and paperboard product comprising fiber blend
US-10961659-B2 · Mar 30, 2021 · US
Method and apparatus for controlling a fiber fractionation system
US-10865520-B2 · Dec 15, 2020 · US
Method of milling minerals in the presence of a poly (itaconate)
US-2020291239-A1 · Sep 17, 2020 · US
Fiber blend, method for producing fiber blend, and paperboard product comprising fiber blend
US-2020048833-A1 · Feb 13, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21D99/00?
- CPC D21D99/00 is the Cooperative Patent Classification code for “Subject matter not provided for in other groups of this subclass.”
- How many patents are filed under CPC D21D99/00 (Subject matter not provided for in other groups of this subclass)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC D21D99/00 growing?
- Publication counts under this code: 5 in 2024 vs 2 in 2025 (latest complete years).