Methods for purifying and recycling lead from spent lead-acid batteries
US-2025226473-A1 · Jul 10, 2025 · US
using rotating drums
using rotating drums · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01J6/002 |
| Official title | {using rotating drums} |
| Display label | using rotating drums |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 2 |
| 2017 | 10 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 5 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods for purifying and recycling lead from spent lead-acid batteries
US-12278352-B2 · Apr 15, 2025 · US
Systems and methods for closed-loop recycling of a liquid component of a leaching mixture when recycling lead from spent lead-acid batteries
US-2024194962-A1 · Jun 13, 2024 · US
Preparation method for propylene epoxidation catalyst and use thereof
US-11918987-B2 · Mar 5, 2024 · US
Systems and methods for closed-loop recycling of a liquid component of a leaching mixture when recycling lead from spent lead-acid batteries
US-11923518-B2 · Mar 5, 2024 · US
Petroleum coke treatment apparatus, process, and treatment system
US-2024059568-A1 · Feb 22, 2024 · US
Methods for purifying and recycling lead from spent lead-acid batteries
US-2024021905-A1 · Jan 18, 2024 · US
Methods for purifying and recycling lead from spent lead-acid batteries
US-11791505-B2 · Oct 17, 2023 · US
Calcination of microporous molecular sieve catalysts
US-11701645-B2 · Jul 18, 2023 · US
Systems and methods for the synthesizing ZSM-22 zeolites
US-11618013-B2 · Apr 4, 2023 · US
Heat treatment method of waste cathode materials and lithium recovery method using same
US-2022340439-A1 · Oct 27, 2022 · US
Thermal treatment of mineral materials in a reducing atmosphere using alternative fuels
US-2022316800-A1 · Oct 6, 2022 · US
Preparation method for propylene epoxidation catalyst and use thereof
US-2022305479-A1 · Sep 29, 2022 · US
Systems and methods for the synthesizing zsm-22 zeolites
US-2022297098-A1 · Sep 22, 2022 · US
Continuous tubular reactor and method of operating the same
US-11358114-B2 · Jun 14, 2022 · US
Calcination of Microporous Molecular Sieve Catalysts
US-2021394163-A1 · Dec 23, 2021 · US
Continuous tubular reactor and method of operating the same
US-2021205777-A1 · Jul 8, 2021 · US
Systems and methods for closed-loop recycling of a liquid component of a leaching mixture when recycling lead from spent lead-acid batteries
US-11005129-B2 · May 11, 2021 · US
Process for conversion of fuel grade coke to anode grade coke
US-10941346-B2 · Mar 9, 2021 · US
Methods for purifying and recycling lead from spent lead-acid batteries
US-2020411921-A1 · Dec 31, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J6/002?
- CPC B01J6/002 is the Cooperative Patent Classification code for “using rotating drums.”
- How many patents are filed under CPC B01J6/002 (using rotating drums)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC B01J6/002 growing?
- Publication counts under this code: 5 in 2024 vs 2 in 2025 (latest complete years).