Cold-water making apparatus and water purifier comprising same
US-2023373816-A1 · Nov 23, 2023 · US
Tortuous
Tortuous · 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 | C02F2301/028 |
| Official title | Tortuous |
| Display label | Tortuous |
| Total patents | 75 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 7 |
| 2020 | 9 |
| 2021 | 7 |
| 2022 | 8 |
| 2023 | 14 |
| 2024 | 10 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for reducing total dissolved solids (tds) in wastewater by an algal biofilm treatment
US-2023348303-A1 · Nov 2, 2023 · US
Ligand-modified filter and methods for reducing metals from liquid compositions
US-11772055-B2 · Oct 3, 2023 · US
Method for treating an effluent supersaturated with calcium carbonate in the presence of phosphonate precipitation-inhibiting products
US-11753324-B2 · Sep 12, 2023 · US
Handheld electronic soap device
US-11739008-B2 · Aug 29, 2023 · US
Rag seeding in wastewater treatment systems
US-11707704-B2 · Jul 25, 2023 · US
Systems and methods for reducing total dissolved solids (TDS) in wastewater by an algal biofilm treatment
US-11691902-B2 · Jul 4, 2023 · US
Concurrent raw and aerated wastewater treatment method using bioelectrochemical system
US-2023183112-A1 · Jun 15, 2023 · US
Method of flow path improvements in water/oil separators using hydrophobic/hydrophilic materials for capacity increase & improving produced water quality
US-2023183094-A1 · Jun 15, 2023 · US
Filter assembly for ice making appliance
US-11654383-B2 · May 23, 2023 · US
Heat dissipation apparatus and methods for UV-LED photoreactors
US-11649175-B2 · May 16, 2023 · US
Treating per- and poly-fluoroalkyl substances in landfill leachate
US-2023127819-A1 · Apr 27, 2023 · US
Unwanted matter removal device, unwanted matter removal method, separation device and separation method
US-2023121484-A1 · Apr 20, 2023 · US
Lamellar arrangement and device for sterilizing a fluid by means of uv radiation comprising such a lamellar arrangement
US-2023097822-A1 · Mar 30, 2023 · US
Sanitising seawater at subsea locations
US-11440816-B2 · Sep 13, 2022 · US
Fluid sterilization apparatus
US-11396458-B2 · Jul 26, 2022 · US
Electrochemical device with efficient ion exchange membranes
US-2022223885-A1 · Jul 14, 2022 · US
Filter assembly for ice making appliance
US-2022161165-A1 · May 26, 2022 · US
Fluid sterilizing device
US-11312642-B2 · Apr 26, 2022 · US
Handheld electronic soap device
US-2022119282-A1 · Apr 21, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2301/028?
- CPC C02F2301/028 is the Cooperative Patent Classification code for “Tortuous.”
- How many patents are filed under CPC C02F2301/028 (Tortuous)?
- Our database includes 75 publications tagged with this CPC code.
- Is patent activity under CPC C02F2301/028 growing?
- Publication counts under this code: 10 in 2024 vs 4 in 2025 (latest complete years).