Lyocell fibers and methods of producing the same
US-12577706-B2 · Mar 17, 2026 · US
of cellulose, cellulose derivatives or proteins {(recovery of sodium sulfate from coagulation baths C01D5/006)}
of cellulose, cellulose derivatives or proteins {(recovery of sodium sulfate from coagulation baths C01D5/006)} · 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 | D01F13/02 |
| Official title | of cellulose, cellulose derivatives or proteins {(recovery of sodium sulfate from coagulation baths C01D5/006)} |
| Display label | of cellulose, cellulose derivatives or proteins {(recovery of sodium sulfate from coagulation baths C01D5/006)} |
| Total patents | 38 |
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 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 5 |
| 2022 | 8 |
| 2023 | 7 |
| 2024 | 4 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Quantitative Raman spectroscopy
US-12571737-B2 · Mar 10, 2026 · US
Recycling of acid-superbase conjugate ionic liquids by water removal in the lyocell spinning process
US-12509801-B2 · Dec 30, 2025 · US
Method for degumming silk fibers
US-2025146182-A1 · May 8, 2025 · US
Composition and method for producing cellulose fiber
US-12129357-B2 · Oct 29, 2024 · US
Process for the recovery of solvent from solvent-containing cellulosic particles
US-12070701-B2 · Aug 27, 2024 · US
Recycled mixed textile comprising cellulose and synthetic plastic
US-2024263360-A1 · Aug 8, 2024 · US
Method of reusing a mixed textile comprising cellulose and synthetic plastic
US-11987906-B2 · May 21, 2024 · US
Method for bleaching pulp from recycled textile material
US-2023392320-A1 · Dec 7, 2023 · US
Method of producing a chemical pulp from a textile material which comprises cellulose and a molded body from the chemical pulp
US-11828005-B2 · Nov 28, 2023 · US
Recycling of acid-superbase conjugate ionic liquids by water removal in the lyocell spinning process
US-2023203717-A1 · Jun 29, 2023 · US
Method of producing a chemical pulp from a textile material which comprises cellulose and a molded body from the chemical pulp
US-2023096086-A1 · Mar 30, 2023 · US
Functionalization of foreign matters in lyocell-methods and molded bodies thereof
US-2023095901-A1 · Mar 30, 2023 · US
Method for processing cotton-containing textile waste
US-2023034810-A1 · Feb 2, 2023 · US
Process for making cellulose fibre or film
US-11549200-B2 · Jan 10, 2023 · US
Process for the recovery of solvent from solvent-containing cellulosic particles
US-2022387905-A1 · Dec 8, 2022 · US
Method of reusing a textile material which comprises cellulose
US-11519104-B2 · Dec 6, 2022 · US
Functionalization of foreign material in lyocell-methods
US-11519101-B2 · Dec 6, 2022 · US
Reusing of lyocell-cellulose for lyocell-methods
US-11519100-B2 · Dec 6, 2022 · US
Lyocell fibers and methods of producing the same
US-2022380941-A1 · Dec 1, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D01F13/02?
- CPC D01F13/02 is the Cooperative Patent Classification code for “of cellulose, cellulose derivatives or proteins {(recovery of sodium sulfate from coagulation baths C01D5/006)}.”
- How many patents are filed under CPC D01F13/02 (of cellulose, cellulose derivatives or proteins {(recovery of sodium sulfate from coagulation baths C01D5/006)})?
- Our database includes 38 publications tagged with this CPC code.
- Is patent activity under CPC D01F13/02 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).