- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 1/44 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
Patent holdings for IPC class H01F 1/44
Total number of patents in this class: 338
10-year publication summary
|
23
|
19
|
23
|
22
|
22
|
26
|
22
|
26
|
22
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Somar Corporation | 136 |
11 |
| FUJIFILM Corporation | 30516 |
8 |
| Massachusetts Institute of Technology | 10254 |
8 |
| Lord Corporation | 454 |
8 |
| The Regents of the University of California | 20778 |
7 |
| BASF SE | 21308 |
6 |
| CK Materials Lab Co., Ltd. | 110 |
6 |
| Centre National de La Recherche Scientifique | 11026 |
5 |
| Hyundai Motor Company | 24703 |
5 |
| Logitech Europe S.A. | 1405 |
5 |
| Vicor Corporation | 129 |
5 |
| Honda Motor Co., Ltd. | 26034 |
4 |
| International Business Machines Corporation | 62671 |
4 |
| Seiko Epson Corporation | 20259 |
4 |
| GM Global Technology Operations LLC | 16155 |
4 |
| University of Florida Research Foundation, Inc. | 4179 |
4 |
| Inventus Engineering GmbH | 200 |
4 |
| Kurimoto, Ltd. | 89 |
4 |
| Nanobrick Co., Ltd. | 38 |
4 |
| UT-Battelle, LLC | 1511 |
4 |
| Other owners | 228 |