Systems for producing regenerant brine and desalinated water from high temperature produced water
US-2018179096-A1 · Jun 28, 2018 · US
by membrane distillation (distillation and evaporation without the use of membranes C02F1/04)
by membrane distillation (distillation and evaporation without the use of membranes C02F1/04) · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C02F1/447 |
| Official title | {by membrane distillation (distillation and evaporation without the use of membranes C02F1/04)} |
| Display label | by membrane distillation (distillation and evaporation without the use of membranes C02F1/04) |
| Total patents | 288 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 25 |
| 2017 | 22 |
| 2018 | 17 |
| 2019 | 21 |
| 2020 | 26 |
| 2021 | 29 |
| 2022 | 34 |
| 2023 | 24 |
| 2024 | 23 |
| 2025 | 47 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for maximizing recovery in membrane distillation
US-2017368506-A1 · Dec 28, 2017 · US
Vacuumed gap membrane distillation (vagmed) module, multi-stage vagmed systems, and vagmed processes
US-2017361277-A1 · Dec 21, 2017 · US
Membrane distillation system which is capable of real-time monitoring on membrane scaling
US-2017354931-A1 · Dec 14, 2017 · US
Nanocarbon immobilized membranes
US-2017333848-A1 · Nov 23, 2017 · US
System and method for flexible low-energy membrane-based liquid purification
US-2017334747-A1 · Nov 23, 2017 · US
Multi-stage submerged membrane distillation water treatment apparatus and a resource recovery method using same
US-2017313610-A1 · Nov 2, 2017 · US
System using heat energy to produce power and pure water
US-2017275190-A1 · Sep 28, 2017 · US
Deposit monitoring device for water treatment device, water treatment device, operating method for same, and washing method for water treatment device
US-2017275189-A1 · Sep 28, 2017 · US
Hydrophobic air-gap membrane distillation
US-9751047-B2 · Sep 5, 2017 · US
Curable Compositions and Membranes
US-2017246594-A1 · Aug 31, 2017 · US
Multi-stage membrane distillation process
US-9718709-B2 · Aug 1, 2017 · US
Apparatus for treating radioactive material using multiple separation membranes
US-2017206992-A1 · Jul 20, 2017 · US
Water treatment system and working medium therefor
US-2017173532-A1 · Jun 22, 2017 · US
Curable compositions and membranes
US-9675940-B2 · Jun 13, 2017 · US
Method for the separation of ammonia and carbon dioxide from aqueous solutions
US-9669360-B2 · Jun 6, 2017 · US
Forward osmosis apparatus and forward osmosis process
US-9630861-B2 · Apr 25, 2017 · US
Desalination system and method for desalination
US-9630862-B2 · Apr 25, 2017 · US
Method for treatment and reuse of used water streams
US-9617173-B2 · Apr 11, 2017 · US
Hydrophobic porous silica aerogel composite membrane and vacuum membrane distillation method
US-9617174-B2 · Apr 11, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/447?
- CPC C02F1/447 is the Cooperative Patent Classification code for “by membrane distillation (distillation and evaporation without the use of membranes C02F1/04).”
- How many patents are filed under CPC C02F1/447 (by membrane distillation (distillation and evaporation without the use of membranes C02F1/04))?
- Our database includes 288 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/447 growing?
- Publication counts under this code: 23 in 2024 vs 47 in 2025 (latest complete years).