Filter cartridge for liquid filteration; assembly; and, methods
US-2020330904-A1 · Oct 22, 2020 · US
with corrugated, folded or wound sheets
with corrugated, folded or wound sheets · 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 | B01D29/232 |
| Official title | {with corrugated, folded or wound sheets} |
| Display label | with corrugated, folded or wound sheets |
| Total patents | 113 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 7 |
| 2017 | 14 |
| 2018 | 6 |
| 2019 | 11 |
| 2020 | 15 |
| 2021 | 7 |
| 2022 | 11 |
| 2023 | 12 |
| 2024 | 8 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
High capacity filter element end cap
US-10731315-B2 · Aug 4, 2020 · US
Liquid filter assembly and methods
US-10717028-B2 · Jul 21, 2020 · US
Oil filter/liquid indicator assembly
US-10648509-B2 · May 12, 2020 · US
Liquid Filtering Device
US-2020108337-A1 · Apr 9, 2020 · US
Filter device
US-10525386-B2 · Jan 7, 2020 · US
High capacity filter element end cap
US-2019338486-A1 · Nov 7, 2019 · US
Liquid filtering device
US-10456716-B2 · Oct 29, 2019 · US
Filter device and filtration device
US-2019321758-A1 · Oct 24, 2019 · US
Inside-out water purification system
US-2019184315-A1 · Jun 20, 2019 · US
High capacity filter element end cap
US-10309078-B2 · Jun 4, 2019 · US
Liquid filter assembly and methods
US-2019134544-A1 · May 9, 2019 · US
Filter device
US-2019091614-A1 · Mar 28, 2019 · US
Filter and filter media having reduced restriction
US-10232301-B2 · Mar 19, 2019 · US
Filter cartridge comprising a weld seam
US-10220344-B2 · Mar 5, 2019 · US
Filter element with central element for a filter system
US-10183244-B2 · Jan 22, 2019 · US
Liquid filter assembly and methods
US-10173153-B2 · Jan 8, 2019 · US
Oil filter/liquid indicator assembly
US-2018347631-A1 · Dec 6, 2018 · US
Filter Element of a Fluid Filter and Fluid Filter
US-2018333663-A1 · Nov 22, 2018 · US
Filter device
US-2018229162-A1 · Aug 16, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D29/232?
- CPC B01D29/232 is the Cooperative Patent Classification code for “with corrugated, folded or wound sheets.”
- How many patents are filed under CPC B01D29/232 (with corrugated, folded or wound sheets)?
- Our database includes 113 publications tagged with this CPC code.
- Is patent activity under CPC B01D29/232 growing?
- Publication counts under this code: 8 in 2024 vs 6 in 2025 (latest complete years).