Preparation capable of simultaneously removing NO, SO2 and HCl
US-12521707-B2 · Jan 13, 2026 · US
Simultaneously removing sulfur oxides and nitrogen oxides
Simultaneously removing sulfur oxides and nitrogen oxides · 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 | B01D53/8637 |
| Official title | {Simultaneously removing sulfur oxides and nitrogen oxides} |
| Display label | Simultaneously removing sulfur oxides and nitrogen oxides |
| Total patents | 33 |
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 | 1 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 8 |
| 2021 | 5 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
PREPARATION METHOD FOR ACTIVATED COKE CATALYST CAPABLE OF SIMULTANEOUSLY REMOVING NO, SO2 AND HCl
US-2025242341-A1 · Jul 31, 2025 · US
Catalyst with regular structure and preparation method thereof and method for simultaneously reducing both sox and nox from flue gas
US-2025144567-A1 · May 8, 2025 · US
Catalyst for reducing sox and nox in flue gas and preparation method thereof, and method for removing sox and nox from flue gas
US-2024416327-A1 · Dec 19, 2024 · US
Method for improving resistance to sulfur-poisoning through structural transformation of nano-ceria supported on alumina
US-11872541-B2 · Jan 16, 2024 · US
Combined adsorption and catalysis for cabin air pollution control
US-2023356179-A1 · Nov 9, 2023 · US
Method for Improving Resistance to Sulfur-Poisoning Through Structural Transformation of Nano-Ceria Supported on Alumina
US-2023072800-A1 · Mar 9, 2023 · US
Photocatalytic filter and air conditioning device comprising photocatalytic filter
US-11585546-B2 · Feb 21, 2023 · US
System for simultaneously removing nitrogen oxides (NOx) and sulfur oxides (SOx) from exhaust gas
US-11110391-B2 · Sep 7, 2021 · US
System and method for desulfurization and denitrification of alumina calcination flue gas, and use
US-11090608-B2 · Aug 17, 2021 · US
System and method for desulfurization and denitrification of alumina calcination flue gas, and use
US-2021170334-A1 · Jun 10, 2021 · US
Catalytic oxidation of NOx/SOx in flue gases with atmospheric oxygen as the oxidation reagent
US-11000805-B2 · May 11, 2021 · US
Catalytic oxidation of NOx/SOx in flue gases with atmospheric oxygen as the oxidation reagent
US-10946335-B2 · Mar 16, 2021 · US
Photocatalytic filter and air conditioning device comprising photocatalytic filter
US-2020363081-A1 · Nov 19, 2020 · US
Selective catalytic reduction process and off-line regeneration of deactivated catalyst of the process
US-10814278-B2 · Oct 27, 2020 · US
Method for simultaneously removing SO2 and NOX in flue gas
US-10814273-B2 · Oct 27, 2020 · US
Catalytic oxidation of nox/sox in flue gases with atmospheric oxygen as the oxidation reagent
US-2020289983-A1 · Sep 17, 2020 · US
Catalyst for treating an exhaust gas, an exhaust system and a method
US-10773252-B2 · Sep 15, 2020 · US
Catalytic oxidation of nox/sox in flue gases with atmospheric oxygen as the oxidation reagent
US-2020215483-A1 · Jul 9, 2020 · US
Method For Simultaneously Removing SO2 And NOX In Flue Gas
US-2020129923-A1 · Apr 30, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D53/8637?
- CPC B01D53/8637 is the Cooperative Patent Classification code for “Simultaneously removing sulfur oxides and nitrogen oxides.”
- How many patents are filed under CPC B01D53/8637 (Simultaneously removing sulfur oxides and nitrogen oxides)?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC B01D53/8637 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).