- All sections
- G - Physics
- G05D - Systems for controlling or regulating non-electric variables
- G05D 9/12 - Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
Patent holdings for IPC class G05D 9/12
Total number of patents in this class: 330
10-year publication summary
|
28
|
30
|
32
|
27
|
27
|
19
|
27
|
31
|
23
|
28
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| State Farm Mutual Automobile Insurance Company | 3154 |
9 |
| Saudi Arabian Oil Company | 13540 |
6 |
| Fisher Controls International LLC | 1505 |
5 |
| Grundfos Holding A/S | 566 |
5 |
| LG Electronics Inc. | 73818 |
4 |
| Kohler Co. | 4074 |
4 |
| Blue Leaf I.P., Inc. | 2788 |
4 |
| DRI-STEEM Corporation | 48 |
4 |
| Patz Corporation | 28 |
4 |
| Hewlett-Packard Development Company, L.P. | 25637 |
3 |
| Applied Materials, Inc. | 19087 |
3 |
| Tokyo Electron Limited | 13043 |
3 |
| Metropolitan Industries, Inc. | 70 |
3 |
| Pentair Water Pool and Spa, Inc. | 440 |
3 |
| Rubicon Research Pty Ltd. | 70 |
3 |
| Tara Oilfield Services Ltd. | 4 |
3 |
| Fuel Automation Station, LLC | 42 |
3 |
| Franklin Fueling Systems, LLC | 74 |
3 |
| Novinium, LLC | 103 |
3 |
| Samsung Electronics Co., Ltd. | 148584 |
2 |
| Other owners | 253 |