Water Treatment Unit Comprising a Plurality of Filtration Devices
US-2024308884-A1 · Sep 19, 2024 · US
comprising multiple ultrafiltration steps
comprising multiple ultrafiltration steps · 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 | B01D61/146 |
| Official title | {comprising multiple ultrafiltration steps} |
| Display label | comprising multiple ultrafiltration steps |
| Total patents | 174 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 8 |
| 2017 | 6 |
| 2018 | 11 |
| 2019 | 15 |
| 2020 | 16 |
| 2021 | 17 |
| 2022 | 21 |
| 2023 | 32 |
| 2024 | 23 |
| 2025 | 18 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filtering device, purification device, and method for manufacturing chemical liquid
US-2020368691-A1 · Nov 26, 2020 · US
Filter device, purification device, chemical solution production method
US-2020360862-A1 · Nov 19, 2020 · US
Filtration device, refining device, and production method for liquid medicine
US-2020360861-A1 · Nov 19, 2020 · US
Method of producing sugar liquid
US-10781466-B2 · Sep 22, 2020 · US
Filtration System for Preparation of Fluids for Medical Applications
US-2020289733-A1 · Sep 17, 2020 · US
Fucosylated chondroitin sulfate oligosaccharide and method for rapidly producing the same
US-2020261493-A1 · Aug 20, 2020 · US
Methods of purifying exosomes
US-10729156-B2 · Aug 4, 2020 · US
Synthesis of oligosaccharides
US-2020215486-A1 · Jul 9, 2020 · US
Purification of oligosaccharides
US-2020148793-A1 · May 14, 2020 · US
Chemical liquid manufacturing apparatus and method of manufacturing chemical liquid
US-2020129884-A1 · Apr 30, 2020 · US
Purification of oligosaccharides
US-2020123184-A1 · Apr 23, 2020 · US
Method for filtering protein-containing liquid
US-2020094190-A1 · Mar 26, 2020 · US
Phosphorus extraction and recovery system (pears)
US-2020079699-A1 · Mar 12, 2020 · US
Permselective membrane and method for producing the same, and method for treating water
US-2020055000-A1 · Feb 20, 2020 · US
Concentration control in filtration systems, and associated methods
US-10561987-B2 · Feb 18, 2020 · US
Methods of concentrating phospholipids
US-2019335778-A1 · Nov 7, 2019 · US
Phosphorus extraction and recovery system (PEARS)
US-10464852-B2 · Nov 5, 2019 · US
Systems and methods for treating dilute wastewater
US-10464833-B2 · Nov 5, 2019 · US
Chemical liquid manufacturing apparatus
US-2019308117-A1 · Oct 10, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D61/146?
- CPC B01D61/146 is the Cooperative Patent Classification code for “comprising multiple ultrafiltration steps.”
- How many patents are filed under CPC B01D61/146 (comprising multiple ultrafiltration steps)?
- Our database includes 174 publications tagged with this CPC code.
- Is patent activity under CPC B01D61/146 growing?
- Publication counts under this code: 23 in 2024 vs 18 in 2025 (latest complete years).