Method for preparing pretreated product for recovering valuable metals of lithium secondary battery
US-2023420761-A1 · Dec 28, 2023 · US
Phosphoric acid, e.g. (O)P(OH)3
Phosphoric acid, e.g. (O)P(OH)3 · 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 | C22B3/3846 |
| Official title | {Phosphoric acid, e.g. (O)P(OH)3} |
| Display label | Phosphoric acid, e.g. (O)P(OH)3 |
| Total patents | 105 |
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 |
| 2018 | 3 |
| 2019 | 7 |
| 2020 | 5 |
| 2021 | 11 |
| 2022 | 12 |
| 2023 | 25 |
| 2024 | 18 |
| 2025 | 16 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for preparing nickel sulfate from nickel-iron-copper alloy
US-2023399240-A1 · Dec 14, 2023 · US
Hydrometallurgical process for lithium-ion battery waste recycling
US-2023383377-A1 · Nov 30, 2023 · US
Method for Manufacturing High-Nickel Positive Electrode Active Material
US-2023373813-A1 · Nov 23, 2023 · US
Composite Extractant-Enhanced Polymer Resin, Method of Making the Same, and Its Usage for Extraction of Valuable Metal(s)
US-2023356208-A9 · Nov 9, 2023 · US
Method for recovering lithium from lithium ion battery scrap
US-2023304130-A1 · Sep 28, 2023 · US
Method for recovering active metal of lithium secondary battery
US-2023250507-A1 · Aug 10, 2023 · US
Method for producing battery-grade nickel sulfate by using laterite nickel ore
US-2023227326-A1 · Jul 20, 2023 · US
Method for Manufacturing a High-purity Nickel/Cobalt Mixed solution For a Cathode Material by a Two Circuit Process
US-2023227938-A1 · Jul 20, 2023 · US
Background rn-rejected actinide in air spectroscopy
US-2023227943-A1 · Jul 20, 2023 · US
Method for recovering lithium from lithium ion battery scrap
US-11702719-B2 · Jul 18, 2023 · US
Production method for cobalt sulfate
US-2023183091-A1 · Jun 15, 2023 · US
Selective recovery method of vanadium and cesium from waste sulfuric acid vanadium catalyst, and high-quality vanadium aqueous solution and cesium alum produced thereby
US-2023138828-A1 · May 4, 2023 · US
Method for producing lithium hydroxide
US-2023132311-A1 · Apr 27, 2023 · US
Method for treating alloy
US-2023071697-A1 · Mar 9, 2023 · US
Method of recovering cathode active material precursor
US-2023049078-A1 · Feb 16, 2023 · US
Systems and processes for recovery of high-grade rare earth concentrate from acid mine drainage
US-2023039988-A1 · Feb 9, 2023 · US
Methods for preparing cathode active material precursor material and cathode active material for lithium secondary battery, and cathode active material for lithium secondary battery prepared according to same
US-2023013498-A1 · Jan 19, 2023 · US
Systems and processes for recovery of high-grade rare earth concentrate from acid mine drainage
US-2022340997-A1 · Oct 27, 2022 · US
Liquid-liquid extraction unit and multistage liquid-liquid extraction apparatus using the same
US-2022305404-A1 · Sep 29, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B3/3846?
- CPC C22B3/3846 is the Cooperative Patent Classification code for “Phosphoric acid, e.g. (O)P(OH)3.”
- How many patents are filed under CPC C22B3/3846 (Phosphoric acid, e.g. (O)P(OH)3)?
- Our database includes 105 publications tagged with this CPC code.
- Is patent activity under CPC C22B3/3846 growing?
- Publication counts under this code: 18 in 2024 vs 16 in 2025 (latest complete years).