Method for producing high-purity hydrochloric acid
US-2025333304-A1 · Oct 30, 2025 · US
of hydrogen chloride
of 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 | C01B7/0706 |
| Official title | {of hydrogen chloride} |
| Display label | of hydrogen chloride |
| Total patents | 33 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 1 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydrogen chloride dehydration method
US-12404172-B2 · Sep 2, 2025 · US
Process for purifying hydrogen halide solutions containing organic impurities
US-2025263296-A1 · Aug 21, 2025 · US
High pressure desorption of hydrogen chloride gas
US-2023331551-A1 · Oct 19, 2023 · US
Hydrogen chloride dehydration method
US-2022371886-A1 · Nov 24, 2022 · US
Method and a system for producing hydrochloric acid from flue gases
US-11376546-B2 · Jul 5, 2022 · US
Method and a system for producing hydrochloric acid from flue gases
US-2021354076-A1 · Nov 18, 2021 · US
Method for flexibly controlling the use of hydrochloric acid from chemical production
US-11040878-B2 · Jun 22, 2021 · US
Method and device for the continuous neutralization of hydrochloric acid
US-11034581-B2 · Jun 15, 2021 · US
Hydrogen chloride mixture, method for producing the same, and filling container
US-2020354217-A1 · Nov 12, 2020 · US
Method for recovering HCI from a HCI containing gas stream
US-10773957-B2 · Sep 15, 2020 · US
Hydrogen gas recovery system and hydrogen gas separation and recovery method
US-10611635-B2 · Apr 7, 2020 · US
Hydrochloric acid purification process and plant
US-10576417-B2 · Mar 3, 2020 · US
Method for flexibly controlling the use of hydrochloric acid from chemical production
US-2019375635-A1 · Dec 12, 2019 · US
Process of Producing Chlorine Gas
US-2019337802-A1 · Nov 7, 2019 · US
Method and device for the continuous neutralization of hydrochloric acid
US-2019330060-A1 · Oct 31, 2019 · US
Method for processing hydrogen chloride from isocyanate preparation
US-10307727-B2 · Jun 4, 2019 · US
Hydrochloric acid purification process and plant
US-2019134560-A1 · May 9, 2019 · US
Method for purifying contaminated gaseous hydrogen chloride
US-10179735-B2 · Jan 15, 2019 · US
Hydrogen chloride mixture, method for producing the same, and filling container
US-2018354790-A1 · Dec 13, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B7/0706?
- CPC C01B7/0706 is the Cooperative Patent Classification code for “of hydrogen chloride.”
- How many patents are filed under CPC C01B7/0706 (of hydrogen chloride)?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC C01B7/0706 growing?
- Publication counts under this code: 1 in 2023 vs 3 in 2025 (latest complete years).