Oxygen isotope concentration method and oxygen isotope concentration apparatus
US-2025214039-A1 · Jul 3, 2025 · US
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Separation by photochemical methods
Separation by photochemical methods · 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 | B01D59/34 |
| Official title | Separation by photochemical methods |
| Display label | Separation by photochemical methods |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2020 | 5 |
| 2021 | 1 |
| 2022 | 7 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Isotopologue or isotope enrichment via preferential condensation of isotopologues or isotopes under non-equilibrium gas-surface collision conditions
US-12296299-B2 · May 13, 2025 · US
Enrichment and separation of isotopes, isotopologues, or other chemical species, via differential embedding in a capture matrix
US-12109535-B2 · Oct 8, 2024 · US
Stable isotope enrichment device and stable isotope enrichment method
US-2024082786-A1 · Mar 14, 2024 · US
Isotopologue or isotope enrichment via preferential condensation of isotopologues or isotopes under non-equilibrium gas-surface collision conditions
US-2022355248-A1 · Nov 10, 2022 · US
Method for separating carbon isotope and method for concentrating carbon isotope using the same
US-11413596-B2 · Aug 16, 2022 · US
Separation of isotopes in space and time by gas-surface atomic diffraction
US-11413579-B2 · Aug 16, 2022 · US
Systems and methods for processing materials with complex isotope vectors for use as a nuclear fuel
US-2022244200-A1 · Aug 4, 2022 · US
Enrichment and separation of isotopes, isotopologues, or other chemical species, via differential embedding in a capture matrix
US-2022143551-A1 · May 12, 2022 · US
Process for isolating 170 isotope from water and process for concentrating 170 isotope using the same
US-11286161-B2 · Mar 29, 2022 · US
Device and method for even-odd separation and ionization of palladium isotopes
US-11266952-B2 · Mar 8, 2022 · US
Separation of Hydrogen Isotopes via Plasmonic Heating
US-2021362092-A1 · Nov 25, 2021 · US
Isotope enrichment for improved magnetic materials
US-10722845-B1 · Jul 28, 2020 · US
Isotope enrichment for improved magnetic materials
US-2020234858-A1 · Jul 23, 2020 · US
Method for separating carbon isotope and method for concentrating carbon isotope using the same
US-2020164337-A1 · May 28, 2020 · US
Process for isolating 170 isotope from water and process for concentrating 170 isotope using the same
US-2020156938-A1 · May 21, 2020 · US
Separation of isotopes in space and time by gas-surface atomic diffraction
US-2020139302-A1 · May 7, 2020 · US
Device and method for even-odd separation and ionization of palladium isotopes
US-2018290105-A1 · Oct 11, 2018 · US
Method and apparatus for separating carbon and oxygen isotopes by using optical fiber laser
US-9731269-B2 · Aug 15, 2017 · US
Process and device for separating isotopes from a gas flow
US-9421497-B2 · Aug 23, 2016 · US