Method for producing quantum dots
US-12577461-B2 · Mar 17, 2026 · US
Halides
Halides · 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 | C01G21/16 |
| Official title | Halides |
| Display label | Halides |
| Total patents | 49 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 7 |
| 2020 | 2 |
| 2021 | 10 |
| 2022 | 6 |
| 2023 | 8 |
| 2024 | 5 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing high-purity cesium halide, and perovskite composite material
US-2025214855-A1 · Jul 3, 2025 · US
Oxygen- and fluorine-doped cesium and rubidium lead perovskite compounds for hard radiation detection
US-12313796-B2 · May 27, 2025 · US
Mixed halide perovskite, megalibraries, heterostructures and solid solutions and methods of forming the same
US-2025154019-A1 · May 15, 2025 · US
Method and recycling system for recovering lead iodide from perovskite solar battery
US-2025109031-A1 · Apr 3, 2025 · US
Methods for preparing perovskite solar cells (pscs) and the resulting pscs
US-2025008752-A1 · Jan 2, 2025 · US
Crosslinked polymer for dewaxing—preparation and implementations thereof
US-12146015-B2 · Nov 19, 2024 · US
Perovskite nanocrystals with improved colloidal stability and method for producing same
US-2024351906-A1 · Oct 24, 2024 · US
Method for forming perovskite layer
US-2024334719-A1 · Oct 3, 2024 · US
Fabrication process for A/M/X materials
US-11976227-B2 · May 7, 2024 · US
Method for producing an oxide shell around nanocrystals
US-11884854-B2 · Jan 30, 2024 · US
Fabrication process for a/m/x materials
US-2023348782-A1 · Nov 2, 2023 · US
A method for producing quantum dots
US-2023279293-A1 · Sep 7, 2023 · US
Compositions comprising perovskite and non-perovskite
US-2023264970-A1 · Aug 24, 2023 · US
Oxygen- and fluorine-doped cesium and rubidium lead perovskite compounds for hard radiation detection
US-2023203372-A1 · Jun 29, 2023 · US
A crosslinked polymer for dewaxing - preparation and implementations thereof
US-2023141299-A1 · May 11, 2023 · US
All solid fluoride ion battery
US-11626590-B2 · Apr 11, 2023 · US
Method for preparing lead iodide and perovskite film
US-2023102199-A1 · Mar 30, 2023 · US
Halide perovskite nanocrystal array and its preparation
US-2023018759-A1 · Jan 19, 2023 · US
Perovskite materials and methods of making the same
US-11427757-B2 · Aug 30, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01G21/16?
- CPC C01G21/16 is the Cooperative Patent Classification code for “Halides.”
- How many patents are filed under CPC C01G21/16 (Halides)?
- Our database includes 49 publications tagged with this CPC code.
- Is patent activity under CPC C01G21/16 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).