Process for purifying hydrogen halide solutions containing organic impurities
US-2025263296-A1 · Aug 21, 2025 · US
Hydrogen iodide · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01B7/135 |
| Official title | {Hydrogen iodide} |
| Display label | Hydrogen iodide |
| Total patents | 20 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 8 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2025263296-A1 · Aug 21, 2025 · US
US-2024383751-A1 · Nov 21, 2024 · US
US-2024286063-A1 · Aug 29, 2024 · US
US-2023120031-A1 · Apr 20, 2023 · US
US-11554956-B2 · Jan 17, 2023 · US
US-2022219979-A1 · Jul 14, 2022 · US
US-11104574-B2 · Aug 31, 2021 · US
US-2020377366-A1 · Dec 3, 2020 · US
US-2020369518-A1 · Nov 26, 2020 · US
US-2020331753-A1 · Oct 22, 2020 · US
US-10774419-B2 · Sep 15, 2020 · US
US-10759730-B2 · Sep 1, 2020 · US
US-10676370-B2 · Jun 9, 2020 · US
US-2020140366-A1 · May 7, 2020 · US
US-10584039-B2 · Mar 10, 2020 · US
US-2019161358-A1 · May 30, 2019 · US
US-2018346342-A1 · Dec 6, 2018 · US
US-10087520-B2 · Oct 2, 2018 · US
US-2017362700-A1 · Dec 21, 2017 · US
US-2017362699-A1 · Dec 21, 2017 · US