Device and method of simultaneously removing flammable gases and nitrous oxide
US-11633695-B1 · Apr 25, 2023 · US
Filter candles
Filter candles · 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 | B01D46/2407 |
| Official title | {Filter candles} |
| Display label | Filter candles |
| Total patents | 69 |
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 | 16 |
| 2016 | 4 |
| 2017 | 8 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 4 |
| 2021 | 11 |
| 2022 | 9 |
| 2023 | 5 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filter arrangement
US-11525378-B2 · Dec 13, 2022 · US
Filter unit with flow optimization
US-2022362690-A1 · Nov 17, 2022 · US
Filter assembly for separating liquid from compressed gas and compressor comprising such filter assembly
US-11491432-B2 · Nov 8, 2022 · US
Powder container
US-11465089-B2 · Oct 11, 2022 · US
Filter assembly and system
US-2022241714-A1 · Aug 4, 2022 · US
Filter cartridge and filter cartridge arrangement
US-11369907-B2 · Jun 28, 2022 · US
Branched filter and method of use
US-2022088511-A1 · Mar 24, 2022 · US
Apparatus and method for cleaning a stream
US-11241648-B2 · Feb 8, 2022 · US
Method and apparatus for joining together modular candle filters
US-11229865-B2 · Jan 25, 2022 · US
Collection device, collection method, and fibrous feedstock recycling device
US-11198087-B2 · Dec 14, 2021 · US
Filter candle
US-2021379521-A1 · Dec 9, 2021 · US
Method and apparatus for joining together modular candle filters
US-2021362083-A1 · Nov 25, 2021 · US
Disposable filtration device
US-11161078-B2 · Nov 2, 2021 · US
Filter arrangement
US-2021254523-A1 · Aug 19, 2021 · US
Vacuum cleaner
US-2021212537-A1 · Jul 15, 2021 · US
A filter assembly for separating liquid from compressed gas and compressor comprising such filter assembly
US-2021146290-A1 · May 20, 2021 · US
Method and system for the removal of particulate matter and noxious compounds from flue-gas using a ceramic filter with an SCR catalyst
US-11007479-B2 · May 18, 2021 · US
Method and system for the removal of particulate matter and noxious compounds from flue-gas using a ceramic filter with an scr catalyst
US-2021101114-A1 · Apr 8, 2021 · US
Powder container
US-2021086126-A1 · Mar 25, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/2407?
- CPC B01D46/2407 is the Cooperative Patent Classification code for “Filter candles.”
- How many patents are filed under CPC B01D46/2407 (Filter candles)?
- Our database includes 69 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/2407 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).