Processes to Clean Tail Gas from Carbon Black Production and System and Facility for Same
US-2025367600-A1 · Dec 4, 2025 · US
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Hydrolytic
Hydrolytic · 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 | B01D2255/808 |
| Official title | Hydrolytic |
| Display label | Hydrolytic |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2017 | 6 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reductant injecting device, exhaust gas processing device and exhaust gas processing method
US-11555433-B2 · Jan 17, 2023 · US
Method of preparing catalyst for low-temperature synergistic catalytic purification of NOx and HCN in flue gas, and use thereof
US-11331657-B2 · May 17, 2022 · US
Core-shell structured catalyst, preparation method thereof and method for treating industrial tail gas
US-11247197-B1 · Feb 15, 2022 · US
Reductant injecting device, exhaust gas processing device and exhaust gas processing method
US-2021222599-A1 · Jul 22, 2021 · US
Combined soot filter and urea hydrolysis
US-11033858-B2 · Jun 15, 2021 · US
Combined Soot Filter and Urea Hydrolysis
US-2021146305-A1 · May 20, 2021 · US
METHOD OF PREPARING CATALYST FOR LOW-TEMPERATURE SYNERGISTIC CATALYTIC PURIFICATION OF NOx AND HCN IN FLUE GAS, AND USE THEREOF
US-2020197922-A1 · Jun 25, 2020 · US
Method for treatment of gas
US-10610853-B2 · Apr 7, 2020 · US
Reducing agent injection device and exhaust gas treatment method
US-10519834-B2 · Dec 31, 2019 · US
Exhaust gas purification material
US-10335736-B2 · Jul 2, 2019 · US
Reducing agent injection device and exhaust gas treatment method
US-10316717-B2 · Jun 11, 2019 · US
Combined oxidation and absorption of NOx by an ionic liquid tandem process
US-10207221-B2 · Feb 19, 2019 · US
Exhaust gas purification material
US-2018296979-A1 · Oct 18, 2018 · US
Reducing agent injection device and exhaust gas treatment device
US-10100694-B2 · Oct 16, 2018 · US
Dual catalyst heating system
US-9968886-B2 · May 15, 2018 · US
Method for treatment of gas
US-2018111114-A1 · Apr 26, 2018 · US
Reducing agent injection device and exhaust gas treatment method
US-2017284258-A1 · Oct 5, 2017 · US
Reducing agent injection device and exhaust gas treatment method
US-2017284256-A1 · Oct 5, 2017 · US
Reducing agent injection device and exhaust gas treatment method
US-2017284257-A1 · Oct 5, 2017 · US