Process for anaerobic digestion of carbonaceous material
US-12515975-B2 · Jan 6, 2026 · US
by freezing · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C02F11/20 |
| Official title | by freezing |
| Display label | by freezing |
| Total patents | 4 |
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2022 | 1 |
| 2024 | 1 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12515975-B2 · Jan 6, 2026 · US
US-2024228354-A1 · Jul 11, 2024 · US
US-2022010059-A1 · Jan 13, 2022 · US
US-2017233278-A1 · Aug 17, 2017 · US