DHSV scale removal method in the production string
US-12577118-B2 · Mar 17, 2026 · US
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with carbonates or bicarbonates
with carbonates or bicarbonates · 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 | C01D1/22 |
| Official title | with carbonates or bicarbonates |
| Display label | with carbonates or bicarbonates |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 2 |
| 2019 | 2 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for treating a sodium carbonate purge
US-12434976-B1 · Oct 7, 2025 · US
Process to recover alkali from a metal oxide/hydroxide containing material
US-12365962-B2 · Jul 22, 2025 · US
Method for preparing lithium hydroxide by using lithium carbonate and barium compound
US-2025011181-A1 · Jan 9, 2025 · US
Dhsv scale removal method in the production string
US-2023054645-A1 · Feb 23, 2023 · US
Process for producing a concentrated aqueous sodium hydroxide solution
US-11465907-B2 · Oct 11, 2022 · US
Process to recover alkali from a metal oxide/hydroxide containing material
US-2022228236-A1 · Jul 21, 2022 · US
Process for treating a sodium carbonate purge
US-2021070620-A1 · Mar 11, 2021 · US
Aluminum hydroxide coagulant recovery from water/wastewater treatment sludge
US-10358355-B2 · Jul 23, 2019 · US
Aluminum hydroxide coagulant recovery from water/wastewater treatment sludge
US-2019185335-A1 · Jun 20, 2019 · US
Process for treating a sodium carbonate purge
US-2017183237-A1 · Jun 29, 2017 · US
Process for treating a sodium carbonate purge
US-9593023-B2 · Mar 14, 2017 · US
Method for preparing positive active material for lithium ion secondary battery, positive active material prepared thereby, and lithium ion secondary battery including the same
US-9325006-B2 · Apr 26, 2016 · US
Process for Treating a Sodium Carbonate Purge
US-2015132203-A1 · May 14, 2015 · US