Method of preparing a biodegradable film
US-11752668-B2 · Sep 12, 2023 · US
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Cellulose derivatives
Cellulose derivatives · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B29K2801/08 |
| Official title | Cellulose derivatives |
| Display label | Cellulose derivatives |
| Total patents | 4 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2020 | 1 |
| 2022 | 2 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of preparing a biodegradable film
US-2022126486-A1 · Apr 28, 2022 · US
Method of preparing a biodegradable film
US-11279063-B2 · Mar 22, 2022 · US
Method of preparing a biodegradable film
US-2020206983-A1 · Jul 2, 2020 · US