Cellulose acetate tow bands and filters with surface markings
US-10515256-B2 · Dec 24, 2019 · US
from organic cellulose esters or ethers, e.g. cellulose acetate
from organic cellulose esters or ethers, e.g. cellulose acetate · 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 | D01F2/28 |
| Official title | from organic cellulose esters or ethers, e.g. cellulose acetate |
| Display label | from organic cellulose esters or ethers, e.g. cellulose acetate |
| Total patents | 143 |
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 | 11 |
| 2016 | 14 |
| 2017 | 7 |
| 2018 | 15 |
| 2019 | 15 |
| 2020 | 18 |
| 2021 | 15 |
| 2022 | 17 |
| 2023 | 10 |
| 2024 | 12 |
| 2025 | 5 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fibers with surface markings used for coding
US-10452873-B2 · Oct 22, 2019 · US
Process for Making an Article of Manufacture
US-2019233970-A1 · Aug 1, 2019 · US
Process for Making an Article of Manufacture
US-2019233974-A1 · Aug 1, 2019 · US
Support materials for 3d printing
US-2019211170-A1 · Jul 11, 2019 · US
Modified cellulose fiber
US-2019185587-A1 · Jun 20, 2019 · US
Support materials for 3D printing
US-10259921-B2 · Apr 16, 2019 · US
Cellulose acetate
US-2019077885-A1 · Mar 14, 2019 · US
Cellulose acetate tow bands and filters with surface markings
US-2019080147-A1 · Mar 14, 2019 · US
Photosensitive fiber and method for manufacturing same
US-10222697-B2 · Mar 5, 2019 · US
Networked dispersion of biocellulose microfibrils in water
US-2019060205-A1 · Feb 28, 2019 · US
Method of modifying polymers
US-10208132-B2 · Feb 19, 2019 · US
Nanofiber manufacturing method and nanofiber manufacturing device
US-10167575-B2 · Jan 1, 2019 · US
Nanofiber and nonwoven fabric
US-2018327932-A1 · Nov 15, 2018 · US
Fibers with physical features used for coding
US-10127410-B2 · Nov 13, 2018 · US
Porous carbon nanofibers and manufacturing thereof
US-2018313002-A1 · Nov 1, 2018 · US
Fiber manufacturing method, non-woven fabric manufacturing method, and fiber manufacturing equipment
US-10052807-B2 · Aug 21, 2018 · US
Porous carbon nanofibers and manufacturing thereof
US-10036105-B2 · Jul 31, 2018 · US
Pneumatic tire and run-flat tire
US-10017634-B2 · Jul 10, 2018 · US
Fibers with physical features used for coding
US-2018144161-A1 · May 24, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D01F2/28?
- CPC D01F2/28 is the Cooperative Patent Classification code for “from organic cellulose esters or ethers, e.g. cellulose acetate.”
- How many patents are filed under CPC D01F2/28 (from organic cellulose esters or ethers, e.g. cellulose acetate)?
- Our database includes 143 publications tagged with this CPC code.
- Is patent activity under CPC D01F2/28 growing?
- Publication counts under this code: 12 in 2024 vs 5 in 2025 (latest complete years).