Air filter medium, pleated filter medium, air filter unit, mask filter medium, and method for regenerating air filter medium
US-12533614-B2 · Jan 27, 2026 · US
Chemical processes for the removal of the retained particles, e.g. by burning
Chemical processes for the removal of the retained particles, e.g. by burning · 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 | B01D46/80 |
| Official title | Chemical processes for the removal of the retained particles, e.g. by burning |
| Display label | Chemical processes for the removal of the retained particles, e.g. by burning |
| Total patents | 59 |
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 | 7 |
| 2016 | 7 |
| 2017 | 8 |
| 2018 | 7 |
| 2019 | 10 |
| 2020 | 9 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Vehicle air conditioning system and method for regenerating air conditioning device
US-2024326560-A1 · Oct 3, 2024 · US
Air filter medium, pleated filter medium, air filter unit, mask filter medium, and method for regenerating air filter medium
US-2024091688-A1 · Mar 21, 2024 · US
Particulate filter
US-2024082765-A1 · Mar 14, 2024 · US
An air purification system and method
US-2023338605-A1 · Oct 26, 2023 · US
Hybrid vehicle
US-11339734-B2 · May 24, 2022 · US
Mitigating particulate matter emission in engine exhaust
US-11286822-B2 · Mar 29, 2022 · US
Plugged honeycomb structure
US-11167279-B2 · Nov 9, 2021 · US
Method for optimizing an active regeneration of a diesel particulate filter
US-11073060-B2 · Jul 27, 2021 · US
Mitigating particulate matter emission in engine exhaust
US-2021215073-A1 · Jul 15, 2021 · US
Device, system, and method for filter reconstitution
US-10925988-B2 · Feb 23, 2021 · US
Oil separator unit
US-10837332-B2 · Nov 17, 2020 · US
Method for producing at least one ash-forming means for a particulate filter of an exhaust gas system of a gasoline engine
US-10828591-B2 · Nov 10, 2020 · US
Exhaust purification device for internal combustion engine and method for controlling the device
US-10823035-B2 · Nov 3, 2020 · US
Control of aftertreatment of an internal combustion engine
US-10794256-B2 · Oct 6, 2020 · US
Exhaust purification system of internal combustion engine
US-10781736-B2 · Sep 22, 2020 · US
Plugged honeycomb structure and method for forming plugged honeycomb structure
US-10753244-B2 · Aug 25, 2020 · US
Emission control device for internal combustion engine
US-10655525-B2 · May 19, 2020 · US
Hybrid vehicle
US-2020141341-A1 · May 7, 2020 · US
Oil separator unit
US-2020063618-A1 · Feb 27, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/80?
- CPC B01D46/80 is the Cooperative Patent Classification code for “Chemical processes for the removal of the retained particles, e.g. by burning.”
- How many patents are filed under CPC B01D46/80 (Chemical processes for the removal of the retained particles, e.g. by burning)?
- Our database includes 59 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/80 growing?
- Publication counts under this code: 1 in 2023 vs 3 in 2024 (latest complete years).