Device for actuating a physical object by magnetically driven fluid flow
US-2022399796-A1 · Dec 15, 2022 · US
of magnetic liquids, e.g. ferrofluids (particles in a bonding agent H01F1/28, H01F1/36, {H01F1/37})
of magnetic liquids, e.g. ferrofluids (particles in a bonding agent H01F1/28, H01F1/36, {H01F1/37}) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F1/44 |
| Official title | of magnetic liquids, e.g. ferrofluids (particles in a bonding agent H01F1/28, H01F1/36, {H01F1/37}) |
| Display label | of magnetic liquids, e.g. ferrofluids (particles in a bonding agent H01F1/28, H01F1/36, {H01F1/37}) |
| Total patents | 91 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 9 |
| 2017 | 9 |
| 2018 | 6 |
| 2019 | 7 |
| 2020 | 15 |
| 2021 | 6 |
| 2022 | 10 |
| 2023 | 12 |
| 2024 | 7 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electromagnetic systems for the selective manipulation of magnetically-barcoded materials
US-2022384081-A1 · Dec 1, 2022 · US
Support device and support unit
US-2022282768-A1 · Sep 8, 2022 · US
Inductive charging arrangement for a vehicle battery
US-11370312-B2 · Jun 28, 2022 · US
Silicone Composition and Curable Grease
US-2022169853-A1 · Jun 2, 2022 · US
Repair structure cracks using self-moving filler materials
US-2022025191-A1 · Jan 27, 2022 · US
Particle-containing droplet systems with monodisperse fluid volumes
US-2021268465-A1 · Sep 2, 2021 · US
Method for manufacturing a mechanical timepiece part provided with a magnetic functional area
US-2021189278-A1 · Jun 24, 2021 · US
Cardiac energy harvesting device and methods of use
US-2021178170-A1 · Jun 17, 2021 · US
Capsule, in-line magnetic valve system and method
US-11035498-B2 · Jun 15, 2021 · US
Inductive charging arrangement for a vehicle battery
US-2021122254-A1 · Apr 29, 2021 · US
High voltage cable for a winding and electromagnetic induction device comprising the same
US-10964471-B2 · Mar 30, 2021 · US
3-D Printed Devices Formed With Magnetic Inks and Methods of Making Graded Index Structures
US-2020353682-A1 · Nov 12, 2020 · US
Iron oxyhydroxide nanodispersion liquid
US-10781109-B2 · Sep 22, 2020 · US
Coil device and coil system
US-10784035-B2 · Sep 22, 2020 · US
Phosphorescent ferro-magnetic particle formulation and method of non-destructive testing therewith
US-2020292499-A1 · Sep 17, 2020 · US
Operation device
US-10725492-B2 · Jul 28, 2020 · US
Direct writing of conformal and free-form magnets
US-10717229-B2 · Jul 21, 2020 · US
Reflector for vehicle lamps
US-10690310-B2 · Jun 23, 2020 · US
High Voltage Cable For A Winding And Electromagnetic Induction Device Comprising The Same
US-2020194164-A1 · Jun 18, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F1/44?
- CPC H01F1/44 is the Cooperative Patent Classification code for “of magnetic liquids, e.g. ferrofluids (particles in a bonding agent H01F1/28, H01F1/36, {H01F1/37}).”
- How many patents are filed under CPC H01F1/44 (of magnetic liquids, e.g. ferrofluids (particles in a bonding agent H01F1/28, H01F1/36, {H01F1/37}))?
- Our database includes 91 publications tagged with this CPC code.
- Is patent activity under CPC H01F1/44 growing?
- Publication counts under this code: 7 in 2024 vs 7 in 2025 (latest complete years).