Dryer stand
US-11154167-B2 · Oct 26, 2021 · US
using active carbon
using active carbon · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F24F8/158 |
| Official title | using active carbon |
| Display label | using active carbon |
| Total patents | 153 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 8 |
| 2017 | 12 |
| 2018 | 8 |
| 2019 | 7 |
| 2020 | 16 |
| 2021 | 20 |
| 2022 | 13 |
| 2023 | 23 |
| 2024 | 18 |
| 2025 | 19 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filter Device, Air Conducting Hose with Filter Element, Tunnel, and Use of the Filter Device
US-2021275953-A1 · Sep 9, 2021 · US
Air conditioner having air purifying module
US-10928083-B2 · Feb 23, 2021 · US
Air quality control and disinfection system
US-2021010701-A1 · Jan 14, 2021 · US
Photocatalyst filter and air conditioner including the same
US-2020368385-A1 · Nov 26, 2020 · US
Electrostatic precipitating apparatus and air conditioning system having same
US-2020360936-A1 · Nov 19, 2020 · US
Scrubber for HVAC system
US-10792608-B2 · Oct 6, 2020 · US
Photocatalyst filter and air conditioner including the same
US-10722605-B2 · Jul 28, 2020 · US
Multifunctional air purifying device for removing indoor pollution by thermal decomposition
US-10717043-B2 · Jul 21, 2020 · US
Air Filtering System
US-2020188827-A1 · Jun 18, 2020 · US
Air purification piece and air purification module
US-2020182496-A1 · Jun 11, 2020 · US
Ventilation system
US-2020179867-A1 · Jun 11, 2020 · US
Purification dehumidifier
US-2020182490-A1 · Jun 11, 2020 · US
Self-power air refresher system
US-2020124300-A1 · Apr 23, 2020 · US
Air Purifying System
US-2020094177-A1 · Mar 26, 2020 · US
Dryer stand
US-2020085255-A1 · Mar 19, 2020 · US
Method of controlling dryer and dryer stand
US-2020085251-A1 · Mar 19, 2020 · US
Dryer stand
US-2020085250-A1 · Mar 19, 2020 · US
Dryer stand
US-2020085262-A1 · Mar 19, 2020 · US
Filtration device for air purification appliance
US-10561983-B2 · Feb 18, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F24F8/158?
- CPC F24F8/158 is the Cooperative Patent Classification code for “using active carbon.”
- How many patents are filed under CPC F24F8/158 (using active carbon)?
- Our database includes 153 publications tagged with this CPC code.
- Is patent activity under CPC F24F8/158 growing?
- Publication counts under this code: 18 in 2024 vs 19 in 2025 (latest complete years).