Air purifying system
US-11781764-B2 · Oct 10, 2023 · US
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Catalysts
Catalysts · 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 | B01D2255/00 |
| Official title | Catalysts |
| Display label | Catalysts |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air Purifying System
US-2020094177-A1 · Mar 26, 2020 · US
Device for purifying exhaust gas
US-10376871-B2 · Aug 13, 2019 · US
Device for purifying exhaust gas
US-2018133707-A1 · May 17, 2018 · US
Exhaust gas treatment apparatus functionality check
US-9616387-B2 · Apr 11, 2017 · US
Exhaust gas post-processing apparatus and control method thereof
US-9597637-B2 · Mar 21, 2017 · US
Method and arrangement for cleaning a particle filter
US-9422845-B2 · Aug 23, 2016 · US
Chemically-enhanced sorbent activation process and methods for using same
US-9302218-B2 · Apr 5, 2016 · US
Co2 capture with amines and acidic materials
US-2016030880-A1 · Feb 4, 2016 · US
Diagnostic for a mid-catalyst NH3 sensor
US-9115630-B1 · Aug 25, 2015 · US
Exhaust Gas Treatment Apparatus Functionality Check
US-2015165379-A1 · Jun 18, 2015 · US
Catalyst functionalized buffer sorbent pebbles for rapid separation of carbon dioxide from gas mixtures
US-8992845-B2 · Mar 31, 2015 · US
Exhaust gas post-processing apparatus and control method thereof
US-2015023854-A1 · Jan 22, 2015 · US
Injector boss and system and method of injecting liquid into a gas stream
US-2015004083-A1 · Jan 1, 2015 · US