Filter element having potted gasket end cap assembly
US-2020391142-A1 · Dec 17, 2020 · US
Self-supporting filtering elements
Self-supporting filtering elements · 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 | B01D29/31 |
| Official title | Self-supporting filtering elements |
| Display label | Self-supporting filtering elements |
| Total patents | 139 |
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 | 1 |
| 2017 | 9 |
| 2018 | 14 |
| 2019 | 17 |
| 2020 | 21 |
| 2021 | 13 |
| 2022 | 16 |
| 2023 | 13 |
| 2024 | 17 |
| 2025 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filter Element of a Filter for Purifying Fluids, Insertion Adapter, and Filter
US-2020386129-A1 · Dec 10, 2020 · US
Filter interconnect utilizing correlated magnetic actuation for downstream system function
US-2020360844-A1 · Nov 19, 2020 · US
Filter interconnect utilizing correlated magnetic actuation for downstream system function
US-2020360931-A1 · Nov 19, 2020 · US
Filter for fuel injectors
US-10830196-B2 · Nov 10, 2020 · US
Filter cartridge for liquid filteration; assembly; and, methods
US-2020330904-A1 · Oct 22, 2020 · US
Suction filter and fuel supply device
US-10794343-B2 · Oct 6, 2020 · US
Metal filter and production method therefor
US-2020306674-A1 · Oct 1, 2020 · US
Filter element and method of manufacturing a filter element
US-10765975-B2 · Sep 8, 2020 · US
Pressure control device
US-2020278037-A1 · Sep 3, 2020 · US
Filter media having a fine pore size distribution
US-2020171418-A1 · Jun 4, 2020 · US
Filter for fuel injectors
US-2020173410-A1 · Jun 4, 2020 · US
Separation apparatus
US-2020001205-A1 · Jan 2, 2020 · US
Fluid purification device
US-2020001214-A1 · Jan 2, 2020 · US
Replacement filter cartridge
US-2019388813-A1 · Dec 26, 2019 · US
Housing for filter element; filter element; methods of use and making
US-10512859-B2 · Dec 24, 2019 · US
Method and apparatuses for screening
US-2019329293-A1 · Oct 31, 2019 · US
Perforated integral filter sleeve for fuel injector and fuel system setup method
US-2019309719-A1 · Oct 10, 2019 · US
Filter, filter device, and method of use
US-10413852-B2 · Sep 17, 2019 · US
Suction filter and fuel supply device
US-2019271286-A1 · Sep 5, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D29/31?
- CPC B01D29/31 is the Cooperative Patent Classification code for “Self-supporting filtering elements.”
- How many patents are filed under CPC B01D29/31 (Self-supporting filtering elements)?
- Our database includes 139 publications tagged with this CPC code.
- Is patent activity under CPC B01D29/31 growing?
- Publication counts under this code: 17 in 2024 vs 13 in 2025 (latest complete years).