Apparatus and method for controlling total dissolved solids, and water treatment apparatus including the same
US-2017369340-A1 · Dec 28, 2017 · US
Controlling or regulating
Controlling or regulating · 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 | B01D61/22 |
| Official title | Controlling or regulating |
| Display label | Controlling or regulating |
| Total patents | 397 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 28 |
| 2016 | 22 |
| 2017 | 35 |
| 2018 | 29 |
| 2019 | 34 |
| 2020 | 54 |
| 2021 | 33 |
| 2022 | 41 |
| 2023 | 54 |
| 2024 | 32 |
| 2025 | 30 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ultrafiltration purification of quantum-dots
US-2017341028-A1 · Nov 30, 2017 · US
Method for controlling fouling during a spinning membrane filtration procedure
US-2017326502-A1 · Nov 16, 2017 · US
Induction heating module and water purifier having the same
US-2017321927-A1 · Nov 9, 2017 · US
Apparatus, system and method for integrated filtration and reverse osmosis desalination
US-9790113-B2 · Oct 17, 2017 · US
Filtration device
US-9737856-B2 · Aug 22, 2017 · US
Process control systems and methods for use with filters and filtration processes
US-2017157566-A1 · Jun 8, 2017 · US
In situ evaluation of filter parameters with opticoanalytical devices
US-2017138832-A1 · May 18, 2017 · US
Apparatus and method for the treatment of blood with selective extraction of solutes
US-9610393-B2 · Apr 4, 2017 · US
Apparatus for extracorporeal blood treatment
US-9533087-B2 · Jan 3, 2017 · US
Blood separation and concentration system
US-9526821-B2 · Dec 27, 2016 · US
Water treatment apparatus with circulating flow path and water treatment method using the same
US-9517949-B2 · Dec 13, 2016 · US
Reverse osmosis membrane filtering device
US-2016354725-A1 · Dec 8, 2016 · US
Method of estimating stable state membrane filtration flux
US-9492791-B2 · Nov 15, 2016 · US
Fuzzy logic
US-9486568-B2 · Nov 8, 2016 · US
Gas sparger for an immersed membrane
US-2016310905-A1 · Oct 27, 2016 · US
Filtration System For Preparation Of Fluids For Medical Applications
US-2016303305-A1 · Oct 20, 2016 · US
Membrane treatment/separation plant and control system
US-2016244339-A1 · Aug 25, 2016 · US
Seawater desalination system and seawater desalination method
US-2016176740-A1 · Jun 23, 2016 · US
Gas sparger for an immersed membrane
US-9358505-B2 · Jun 7, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D61/22?
- CPC B01D61/22 is the Cooperative Patent Classification code for “Controlling or regulating.”
- How many patents are filed under CPC B01D61/22 (Controlling or regulating)?
- Our database includes 397 publications tagged with this CPC code.
- Is patent activity under CPC B01D61/22 growing?
- Publication counts under this code: 32 in 2024 vs 30 in 2025 (latest complete years).