- 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: 328
10-year publication summary
|
32
|
31
|
33
|
29
|
27
|
19
|
31
|
32
|
24
|
22
|
| 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 | 3114 |
9 |
| Saudi Arabian Oil Company | 13155 |
6 |
| Fisher Controls International LLC | 1488 |
5 |
| Grundfos Holding A/S | 556 |
5 |
| LG Electronics Inc. | 73021 |
4 |
| Blue Leaf I.P., Inc. | 2814 |
4 |
| DRI-STEEM Corporation | 46 |
4 |
| Patz Corporation | 27 |
4 |
| Kohler Co. | 4055 |
3 |
| Hewlett-Packard Development Company, L.P. | 25895 |
3 |
| Applied Materials, Inc. | 18621 |
3 |
| Metropolitan Industries, Inc. | 69 |
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 | 72 |
3 |
| Novinium, LLC | 100 |
3 |
| Samsung Electronics Co., Ltd. | 146092 |
2 |
| General Electric Company | 13780 |
2 |
| Other owners | 253 |