Halogen mediated production of hydrogen and carbon from hydrocarbons
US-2025313459-A1 · Oct 9, 2025 · US
Chlorine; Hydrogen chloride
Chlorine; Hydrogen chloride · 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 | C01B7/01 |
| Official title | Chlorine; Hydrogen chloride |
| Display label | Chlorine; Hydrogen chloride |
| Total patents | 58 |
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 | 5 |
| 2016 | 6 |
| 2017 | 11 |
| 2018 | 11 |
| 2019 | 9 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for isocyanate and polyurethane production with improved sustainability
US-12291595-B2 · May 6, 2025 · US
Superconductor comprising magnesium diboride and manufacturing method therefor
US-11903332-B2 · Feb 13, 2024 · US
Molding catalyst and method for producing halogen
US-2023092065-A1 · Mar 23, 2023 · US
Method for isocyanate and polyurethane production with improved sustainability
US-2022389150-A1 · Dec 8, 2022 · US
Method of purifying waste hydrochloric acid
US-11472702-B2 · Oct 18, 2022 · US
Process for purifying a contaminated hydrochloric acid composition
US-11352255-B2 · Jun 7, 2022 · US
Wet wiper
US-11179486-B2 · Nov 23, 2021 · US
Method and system for growth of graphene nanostripes by plasma enhanced chemical vapor deposition
US-11111584-B2 · Sep 7, 2021 · US
Method and device for the continuous neutralization of hydrochloric acid
US-11034581-B2 · Jun 15, 2021 · US
Superconductor comprising magnesium diboride and manufacturing method therefor
US-2021036207-A1 · Feb 4, 2021 · US
Purification of hydrogen
US-10882744-B2 · Jan 5, 2021 · US
Hydrogen chloride mixture, method for producing the same, and filling container
US-2020354217-A1 · Nov 12, 2020 · US
Method of purifying waste hydrochloric acid
US-2020270132-A1 · Aug 27, 2020 · US
Purification of hydrogen
US-2020156937-A1 · May 21, 2020 · US
Method and system for growth of graphene nanostripes by plasma enhanced chemical vapor deposition
US-2020048769-A1 · Feb 13, 2020 · US
Biochloride Generation and Methods
US-2019381094-A1 · Dec 19, 2019 · US
Method and device for regeneration of hydrochloric acid
US-10494259-B2 · Dec 3, 2019 · US
Process for Purifying a Contaminated Hydrochloric Acid Composition
US-2019345032-A1 · Nov 14, 2019 · US
Method and system for growth of graphene nanostripes by plasma enhanced chemical vapor deposition
US-10465291-B2 · Nov 5, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B7/01?
- CPC C01B7/01 is the Cooperative Patent Classification code for “Chlorine; Hydrogen chloride.”
- How many patents are filed under CPC C01B7/01 (Chlorine; Hydrogen chloride)?
- Our database includes 58 publications tagged with this CPC code.
- Is patent activity under CPC C01B7/01 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).