Filter system for removing dust particles from underground mining and methods of use thereof
US-2026028909-A1 · Jan 29, 2026 · US
with flat filtering elements
with flat 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 | B01D33/0346 |
| Official title | {with flat filtering elements} |
| Display label | with flat filtering elements |
| Total patents | 32 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Velocity measurement of drilled cuttings on a shaker
US-12221841-B2 · Feb 11, 2025 · US
Shaker vibration and downhole cuttings measurement analysis and processing
US-11906395-B2 · Feb 20, 2024 · US
Degassing and analyzing drilling fluid
US-11739600-B2 · Aug 29, 2023 · US
Brine injection system with improved filtering system
US-2022347605-A1 · Nov 3, 2022 · US
Velocity measurement of drilled cuttings on a shaker
US-2022275694-A1 · Sep 1, 2022 · US
Apparatus and method for separating solids from a solids laden drilling fluid
US-11395983-B2 · Jul 26, 2022 · US
Velocity measurement of drilled cuttings on a shaker
US-11339618-B2 · May 24, 2022 · US
Apparatus, system and methods to divide flow
US-11185802-B2 · Nov 30, 2021 · US
Degassing and Analyzing Drilling Fluid
US-2021131203-A1 · May 6, 2021 · US
Shaker vibration and downhole cuttings measurement analysis and processing
US-2020363289-A1 · Nov 19, 2020 · US
Apparatus and method for separating solids from a solids larden drilling fluid
US-2020353387-A1 · Nov 12, 2020 · US
Apparatus and method for separating solids from a solids laden drilling fluid
US-10799817-B2 · Oct 13, 2020 · US
Apparatus, system and method for separating components of a slurry
US-10704346-B2 · Jul 7, 2020 · US
Systems and methods for processing earthen slurries
US-10683178-B2 · Jun 16, 2020 · US
Apparatus, system and methods to divide flow
US-2020001213-A1 · Jan 2, 2020 · US
Velocity measurement of drilled cuttings on a shaker
US-2019368287-A1 · Dec 5, 2019 · US
Transfer systems for receiving and conveying material
US-10486920-B2 · Nov 26, 2019 · US
Apparatus, system and methods to divide flow
US-10434442-B2 · Oct 8, 2019 · US
Drilling fluid processing tank and system
US-10240412-B2 · Mar 26, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D33/0346?
- CPC B01D33/0346 is the Cooperative Patent Classification code for “with flat filtering elements.”
- How many patents are filed under CPC B01D33/0346 (with flat filtering elements)?
- Our database includes 32 publications tagged with this CPC code.
- Is patent activity under CPC B01D33/0346 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).