Magnetic nanofluid temperature control of shell and tube heat exchanger
US-12173221-B1 · Dec 24, 2024 · US
the magnetic component being a compound, e.g. Fe3O4 (H01F1/447 takes precedence)
the magnetic component being a compound, e.g. Fe3O4 (H01F1/447 takes precedence) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F1/445 |
| Official title | {the magnetic component being a compound, e.g. Fe3O4 (H01F1/447 takes precedence)} |
| Display label | the magnetic component being a compound, e.g. Fe3O4 (H01F1/447 takes precedence) |
| Total patents | 70 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 6 |
| 2017 | 6 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 5 |
| 2021 | 7 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 13 |
| 2025 | 4 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Stock solution
US-12170161-B2 · Dec 17, 2024 · US
Silicone composition and curable grease
US-12122916-B2 · Oct 22, 2024 · US
Magnetic hydrogel with a ternary magnetic composite and method for fabricating the same
US-2024317976-A1 · Sep 26, 2024 · US
Thawing of cryopreserved materials using automatic single-mode electromagnetic resonance
US-2024260568-A1 · Aug 8, 2024 · US
Wireless actuators
US-11892015-B2 · Feb 6, 2024 · US
Magnetic nanoparticles for sample separation
US-2024025759-A1 · Jan 25, 2024 · US
Low-temperature resistant perfluoropolyether-based magnetic liquid and preparation method thereof
US-11869694-B1 · Jan 9, 2024 · US
Iron oxide nanoparticle-based magnetic ink for additive manufacturing
US-11858196-B2 · Jan 2, 2024 · US
Dynamic ferrofluid shield for well control
US-11840903-B2 · Dec 12, 2023 · US
Dynamic ferrofluid shield for well control
US-2023175338-A1 · Jun 8, 2023 · US
Iron oxide nanoparticle-based magnetic ink for additive manufacturing
US-2023134927-A1 · May 4, 2023 · US
Biocompatible oily ferrofluid and preparation process
US-2023005647-A1 · Jan 5, 2023 · US
Patterning structures in reactive ferrofluidic polymer resins
US-2022403121-A1 · Dec 22, 2022 · US
Composition and heat transport device
US-2022332999-A1 · Oct 20, 2022 · US
Silicone Composition and Curable Grease
US-2022169853-A1 · Jun 2, 2022 · US
Wireless Actuators
US-2021355972-A1 · Nov 18, 2021 · US
Droplet Assembly Method
US-2021296033-A1 · Sep 23, 2021 · US
Controlled liquid/solid mobility using external fields on lubricant-impregnated surfaces
US-11079141-B2 · Aug 3, 2021 · US
Magnetically actuated surfaces for dynamic iridescence
US-2021114021-A1 · Apr 22, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F1/445?
- CPC H01F1/445 is the Cooperative Patent Classification code for “the magnetic component being a compound, e.g. Fe3O4 (H01F1/447 takes precedence).”
- How many patents are filed under CPC H01F1/445 (the magnetic component being a compound, e.g. Fe3O4 (H01F1/447 takes precedence))?
- Our database includes 70 publications tagged with this CPC code.
- Is patent activity under CPC H01F1/445 growing?
- Publication counts under this code: 13 in 2024 vs 4 in 2025 (latest complete years).