System and method for a filter system
US-11845020-B2 · Dec 19, 2023 · US
Filter cartridge constructions
Filter cartridge constructions · 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 | B01D2201/29 |
| Official title | Filter cartridge constructions |
| Display label | Filter cartridge constructions |
| Total patents | 87 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 7 |
| 2019 | 6 |
| 2020 | 16 |
| 2021 | 4 |
| 2022 | 14 |
| 2023 | 10 |
| 2024 | 7 |
| 2025 | 10 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air cleaner assemblies and methods of use
US-2023390682-A1 · Dec 7, 2023 · US
Filter assemblies, depth indicators, torque-limiting fittings, torque-indicating fittings, and systems incorporating the same
US-2023110390-A1 · Apr 13, 2023 · US
Oil sequestering spin-on cartridge
US-11596885-B2 · Mar 7, 2023 · US
Mechanical interlock system for a filter
US-2022379248-A1 · Dec 1, 2022 · US
Bi-directional recirculating filtration and removeable filtration apparatus for laundry treating appliances
US-2022282422-A1 · Sep 8, 2022 · US
Fuel filter
US-11426687-B2 · Aug 30, 2022 · US
Fluid Filter for a Motor Vehicle and Filter Cartridge for a Fluid Filter
US-2022266178-A1 · Aug 25, 2022 · US
System and method for a filter system
US-2022203274-A1 · Jun 30, 2022 · US
Filter assemblies, depth indicators, torque-limiting fittings, torque-indicating fittings, and systems incorporating the same
US-2022196613-A1 · Jun 23, 2022 · US
Filter assemblies, depth indicators, torque-limiting fittings, torque-indicating fittings, and systems incorporating the same
US-2022196612-A1 · Jun 23, 2022 · US
Star pleating with inside out flow having water drainage through the center
US-2022193579-A1 · Jun 23, 2022 · US
Water separation group
US-11352991-B2 · Jun 7, 2022 · US
Filter assembly for ice making appliance
US-2022161165-A1 · May 26, 2022 · US
Filter with shielded internal gasket
US-2022161167-A1 · May 26, 2022 · US
Filter system, filter, and method
US-11311824-B2 · Apr 26, 2022 · US
System and method for a filter system
US-11273394-B2 · Mar 15, 2022 · US
Filter-attached cartridge
US-2022023777-A1 · Jan 27, 2022 · US
Filter interconnect using a magnetic shear force
US-2021331103-A1 · Oct 28, 2021 · US
Water-cooled heat exchanger
US-2021231353-A1 · Jul 29, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2201/29?
- CPC B01D2201/29 is the Cooperative Patent Classification code for “Filter cartridge constructions.”
- How many patents are filed under CPC B01D2201/29 (Filter cartridge constructions)?
- Our database includes 87 publications tagged with this CPC code.
- Is patent activity under CPC B01D2201/29 growing?
- Publication counts under this code: 7 in 2024 vs 10 in 2025 (latest complete years).