Method of collecting anhydrous sodium sulfate from fly ash
US-2025197233-A1 · Jun 19, 2025 · US
Dehydration {(C01D5/145 takes precedence)} · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01D5/18 |
| Official title | Dehydration {(C01D5/145 takes precedence)} |
| Display label | Dehydration {(C01D5/145 takes precedence)} |
| Total patents | 6 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2018 | 2 |
| 2019 | 1 |
| 2021 | 1 |
| 2023 | 1 |
| 2025 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2025197233-A1 · Jun 19, 2025 · US
US-11827524-B2 · Nov 28, 2023 · US
US-2021163306-A1 · Jun 3, 2021 · US
US-10414667-B2 · Sep 17, 2019 · US
US-10150677-B2 · Dec 11, 2018 · US
US-2018222758-A1 · Aug 9, 2018 · US