Miniature gas detection and purification device
US-12172118-B2 · Dec 24, 2024 · US
dry type
dry type · 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 | B03C3/04 |
| Official title | dry type |
| Display label | dry type |
| Total patents | 62 |
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 | 5 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 10 |
| 2020 | 7 |
| 2021 | 6 |
| 2022 | 4 |
| 2023 | 8 |
| 2024 | 10 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air conditioning apparatus
US-2024359125-A1 · Oct 31, 2024 · US
Flue pipe systems and methods of purifying flue gases
US-12097509-B2 · Sep 24, 2024 · US
Air cleaner, air cleaner system, and air-conditioning apparatus
US-12097510-B2 · Sep 24, 2024 · US
Air conditioning apparatus
US-12070715-B2 · Aug 27, 2024 · US
Air cleaner, air cleaner system, and air-conditioning apparatus
US-2024261799-A1 · Aug 8, 2024 · US
Plasma filter facility, electrode facility and method for operating a plasma filter facility
US-2024173667-A1 · May 30, 2024 · US
System and method for high efficiency filtering and removal of airborne pathogens from a volume of gas
US-2024139369-A1 · May 2, 2024 · US
Indoor unit for air conditioner
US-11940179-B2 · Mar 26, 2024 · US
Reversible bipolarization ionizer
US-2024001376-A1 · Jan 4, 2024 · US
Air conditioning apparatus
US-2023285888-A1 · Sep 14, 2023 · US
Air conditioning apparatus
US-11673088-B2 · Jun 13, 2023 · US
Flue pipe systems and methods of purifying flue gases
US-2023173505-A1 · Jun 8, 2023 · US
Foreign substrate collector for a laundry appliance
US-2023151537-A1 · May 18, 2023 · US
Indoor unit for air conditioner
US-2023142796-A1 · May 11, 2023 · US
Indoor unit for air conditioner
US-11573019-B2 · Feb 7, 2023 · US
Dust collecting tower apparatus
US-11541401-B2 · Jan 3, 2023 · US
Electrical appliance with electrostatic dust collecting device using carbon fiber
US-11541343-B2 · Jan 3, 2023 · US
Device for realizing surface cleaning of optical element by ion wind and electrostatic coupling
US-2022397757-A1 · Dec 15, 2022 · US
Flux collection method and flux collection apparatus
US-11511364-B2 · Nov 29, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B03C3/04?
- CPC B03C3/04 is the Cooperative Patent Classification code for “dry type.”
- How many patents are filed under CPC B03C3/04 (dry type)?
- Our database includes 62 publications tagged with this CPC code.
- Is patent activity under CPC B03C3/04 growing?
- Publication counts under this code: 10 in 2024 vs 2 in 2025 (latest complete years).