Material for neutralising and/or hardening liquids, a method for producing same, and uses
US-2024293793-A1 · Sep 5, 2024 · US
using calcium compounds
using calcium compounds · 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 | C02F5/06 |
| Official title | using calcium compounds |
| Display label | using calcium compounds |
| Total patents | 66 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 5 |
| 2017 | 3 |
| 2018 | 9 |
| 2019 | 11 |
| 2020 | 10 |
| 2021 | 8 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for Removing Hardness and Total Organic Carbon from Drinking Water
US-2024199454-A1 · Jun 20, 2024 · US
Process for treating frac flowback and produced water including naturally occurring radioactive material
US-11834358-B2 · Dec 5, 2023 · US
Method for treating an effluent supersaturated with calcium carbonate in the presence of phosphonate precipitation-inhibiting products
US-11753324-B2 · Sep 12, 2023 · US
System and Process for Membrane Fouling Control, A Membrane Fouling Control Additive, an Upgrade Kit and an Upgrade Method
US-2023158456-A1 · May 25, 2023 · US
Salt Separation and Destruction of PFAS Utilizing Reverse Osmosis and Salt Separation
US-2023047367-A1 · Feb 16, 2023 · US
Device for filtering of liquid and filling for a household electrical appliance
US-2022304441-A1 · Sep 29, 2022 · US
Salt separation and destruction of PFAS utilizing reverse osmosis and salt separation
US-11407666-B2 · Aug 9, 2022 · US
Salt Separation and Destruction of PFAS Utilizing Reverse Osmosis and Salt Separation
US-2022041483-A1 · Feb 10, 2022 · US
Method for softening lithium brine using nanofiltration
US-11203542-B2 · Dec 21, 2021 · US
Coagulant blend in SAGD water treatment
US-11034597-B2 · Jun 15, 2021 · US
SAGD saline water system optimization
US-11034604-B2 · Jun 15, 2021 · US
Process for treating frac flowback and produced water including naturally occurring radioactive material
US-2021163327-A1 · Jun 3, 2021 · US
Process for reduction of sulfide from water and wastewater
US-11008240-B2 · May 18, 2021 · US
Methods and compositions for clarifying produced waters for boiler feed waters
US-10934189-B2 · Mar 2, 2021 · US
Methods and systems for treating high temperature produced water
US-10906001-B2 · Feb 2, 2021 · US
Ion removal system
US-2021024393-A1 · Jan 28, 2021 · US
Process for removing silica from produced water and other wastewater streams
US-10843946-B2 · Nov 24, 2020 · US
Hardness reduction filter
US-10836664-B2 · Nov 17, 2020 · US
Rheology-modifying agents for slurries
US-10822442-B2 · Nov 3, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F5/06?
- CPC C02F5/06 is the Cooperative Patent Classification code for “using calcium compounds.”
- How many patents are filed under CPC C02F5/06 (using calcium compounds)?
- Our database includes 66 publications tagged with this CPC code.
- Is patent activity under CPC C02F5/06 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).