Method for producing phosgene
US-12391557-B2 · Aug 19, 2025 · US
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in mercury cathode cells
in mercury cathode cells · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C25B1/36 |
| Official title | in mercury cathode cells |
| Display label | in mercury cathode cells |
| Total patents | 3 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2022 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing phosgene
US-2022212936-A1 · Jul 7, 2022 · US
Brine mining process
US-2016272513-A1 · Sep 22, 2016 · US