Water treatment method and water treatment apparatus
US-2024383788-A1 · Nov 21, 2024 · US
Reverse osmosis; Hyperfiltration {; Nanofiltration}
Reverse osmosis; Hyperfiltration {; Nanofiltration} · 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 | B01D61/02 |
| Official title | Reverse osmosis; Hyperfiltration {; Nanofiltration} |
| Display label | Reverse osmosis; Hyperfiltration {; Nanofiltration} |
| Total patents | 334 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 28 |
| 2017 | 35 |
| 2018 | 37 |
| 2019 | 30 |
| 2020 | 34 |
| 2021 | 37 |
| 2022 | 32 |
| 2023 | 24 |
| 2024 | 30 |
| 2025 | 26 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Perforated graphene deionization or desalination
US-9833748-B2 · Dec 5, 2017 · US
Synthetic membranes and methods of use thereof
US-2017312698-A1 · Nov 2, 2017 · US
Curable composition and cured polymer product
US-9795955-B2 · Oct 24, 2017 · US
Separation membrane
US-2017296984-A1 · Oct 19, 2017 · US
Method for manufacturing polyamide-based water-treatment separator having excellent permeation flux characteristics and water-treatment separator manufactured by same
US-2017291990-A1 · Oct 12, 2017 · US
Method for removing heavy metals from an aqueous solution with cross-linked copolymers
US-9782768-B2 · Oct 10, 2017 · US
Batch Pressure-Driven Membrane Separation with Closed-Flow Loop and Reservoir
US-2017239620-A1 · Aug 24, 2017 · US
Process for improved water flux through a tfc membrane
US-2017197182-A1 · Jul 13, 2017 · US
Peroxyformic acid compositions for membrane filtration cleaning
US-2017173642-A1 · Jun 22, 2017 · US
Composite semipermeable membrane
US-2017136422-A1 · May 18, 2017 · US
Composite semipermeable membrane
US-2017120201-A1 · May 4, 2017 · US
Membrane System to Treat Leachate and Methods of Treating Leachate
US-2017081218-A1 · Mar 23, 2017 · US
Method for producing sugar solution
US-9598740-B2 · Mar 21, 2017 · US
Graphene-based filter for isolating a substance from blood
US-9572918-B2 · Feb 21, 2017 · US
Separation membrane and water treatment device including the same
US-9540255-B2 · Jan 10, 2017 · US
Membranes comprising graphene
US-2016354729-A1 · Dec 8, 2016 · US
Curable composition and cured polymer product
US-2016354771-A1 · Dec 8, 2016 · US
Membrane device and process for mass exchange, separation, and filtration
US-9492795-B2 · Nov 15, 2016 · US
Draw solute for forward osmosis, forward osmosis water treatment device, and forward osmosis method for water treatment
US-9492789-B2 · Nov 15, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D61/02?
- CPC B01D61/02 is the Cooperative Patent Classification code for “Reverse osmosis; Hyperfiltration {; Nanofiltration}.”
- How many patents are filed under CPC B01D61/02 (Reverse osmosis; Hyperfiltration {; Nanofiltration})?
- Our database includes 334 publications tagged with this CPC code.
- Is patent activity under CPC B01D61/02 growing?
- Publication counts under this code: 30 in 2024 vs 26 in 2025 (latest complete years).