Aluminum composite for hydrogen generation and methods of preparation thereof
US-12583741-B2 · Mar 24, 2026 · US
Hydrogen isotopes; Inorganic compounds thereof prepared by isotope exchange, e.g. NH3 + D2 → NH2D + HD
Hydrogen isotopes; Inorganic compounds thereof prepared by isotope exchange, e.g. NH3 + D2 → NH2D + HD · 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 | C01B4/00 |
| Official title | Hydrogen isotopes; Inorganic compounds thereof prepared by isotope exchange, e.g. NH3 + D2 → NH2D + HD |
| Display label | Hydrogen isotopes; Inorganic compounds thereof prepared by isotope exchange, e.g. NH3 + D2 → NH2D + HD |
| Total patents | 39 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 6 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 5 |
| 2024 | 5 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Low temperature decontamination of tritiated water
US-12415146-B2 · Sep 16, 2025 · US
Nanostructured ceramic membranes for hydrogen isotope separation
US-12410072-B2 · Sep 9, 2025 · US
Semiconductor manufacturing apparatus and method of manufacturing semiconductor device
US-12131910-B2 · Oct 29, 2024 · US
Multicomponent plasmonic photocatalysts consisting of a plasmonic antenna and a reactive catalytic surface: the antenna-reactor effect
US-12109558-B2 · Oct 8, 2024 · US
Deuterium recovery method and deuterium recovery equipment
US-2024239655-A1 · Jul 18, 2024 · US
Separation system and separation method
US-2024173669-A1 · May 30, 2024 · US
Multicomponent plasmonic photocatalysts consisting of a plasmonic antenna and a reactive catalytic surface: the antenna-reactor effect
US-11958043-B2 · Apr 16, 2024 · US
Low temperature decontamination of tritiated water
US-2023415071-A1 · Dec 28, 2023 · US
Nanostructured ceramic membranes for hydrogen isotope separation
US-2023382769-A1 · Nov 30, 2023 · US
Methods for stabilizing perovskites
US-11753422-B2 · Sep 12, 2023 · US
Aluminum composite for hydrogen generation and methods of preparation thereof
US-2023202838-A1 · Jun 29, 2023 · US
Hydrogen isotope separation systems
US-2023017076-A1 · Jan 19, 2023 · US
Hydrogen isotope separation methods and systems
US-11433353-B2 · Sep 6, 2022 · US
Semiconductor manufacturing apparatus and method of manufacturing semiconductor device
US-2022270885-A1 · Aug 25, 2022 · US
Methods for stabilizing perovskites
US-2022059780-A1 · Feb 24, 2022 · US
Separation of Hydrogen Isotopes via Plasmonic Heating
US-2021362092-A1 · Nov 25, 2021 · US
Decontamination of tritiated water
US-11087897-B2 · Aug 10, 2021 · US
Multicomponent plasmonic photocatalysts consisting of a plasmonic antenna and a reactive catalytic surface: the antenna-reactor effect
US-2021023541-A1 · Jan 28, 2021 · US
Hydrogen Isotope Separation Methods and Systems
US-2020384411-A1 · Dec 10, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B4/00?
- CPC C01B4/00 is the Cooperative Patent Classification code for “Hydrogen isotopes; Inorganic compounds thereof prepared by isotope exchange, e.g. NH3 + D2 → NH2D + HD.”
- How many patents are filed under CPC C01B4/00 (Hydrogen isotopes; Inorganic compounds thereof prepared by isotope exchange, e.g. NH3 + D2 → NH2D + HD)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC C01B4/00 growing?
- Publication counts under this code: 5 in 2024 vs 2 in 2025 (latest complete years).