Method for producing quantum dots
US-12577461-B2 · Mar 17, 2026 · US
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Compounds of lead
Compounds of lead · 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 | C01G21/00 |
| Official title | Compounds of lead |
| Display label | Compounds of lead |
| Total patents | 21 |
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 | 1 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Purification method of nanoparticle, nanoparticle composition, and manufacturing method of nanoparticle composition
US-2026071075-A1 · Mar 12, 2026 · US
Method for producing high-purity cesium halide, and perovskite composite material
US-2025214855-A1 · Jul 3, 2025 · US
Products formed by ligand exchange of nanocrystal films
US-2024271311-A1 · Aug 15, 2024 · US
Core-shell particles based on red lead for lead-acid batteries
US-12015144-B2 · Jun 18, 2024 · US
Ligand exchange of nanocrystal films
US-11993860-B2 · May 28, 2024 · US
A method for producing quantum dots
US-2023279293-A1 · Sep 7, 2023 · US
Core-shell particles based on red lead for lead-acid batteries
US-2022310987-A1 · Sep 29, 2022 · US
System, Emanation Generator, and Process for Production of High-Purity Therapeutic Radioisotopes
US-2022301737-A1 · Sep 22, 2022 · US
Ligand exchange of nanocrystal films
US-2022243352-A1 · Aug 4, 2022 · US
System, emanation generator, and process for production of high-purity therapeutic radioisotopes
US-11348702-B2 · May 31, 2022 · US
Particle, Composition, Film, Laminated Structure, Light-Emitting Device and Display
US-2021395608-A1 · Dec 23, 2021 · US
Acoustic wave H2S sensor comprising a polymer film comprising carboxylate functional groups and lead or zinc cations and manufacturing process
US-11185887-B2 · Nov 30, 2021 · US
Multi-atomic layered materials
US-11046585-B2 · Jun 29, 2021 · US
Film, Production Method for Composition, Production Method for Cured Product, and Production Method for Film
US-2020165397-A1 · May 28, 2020 · US
Multi-atomic layered materials
US-2019292061-A1 · Sep 26, 2019 · US
Method for indirectly measuring lead ion concentration in blood
US-2019293664-A1 · Sep 26, 2019 · US
Method for producing dispersions of nanosheets
US-10309027-B2 · Jun 4, 2019 · US
Acoustic wave h2s sensor comprising a polymer film comprising carboxylate functional groups and lead or zinc cations and manufacturing process
US-2018071780-A1 · Mar 15, 2018 · US
System, emanation generator, and process for production of high-purity therapeutic radioisotopes
US-2018047474-A1 · Feb 15, 2018 · US