- All sections
- G - Physics
- G01F - Measuring volume, volume flow, mass flow, or liquid levelmetering by volume
- G01F 23/22 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
Patent holdings for IPC class G01F 23/22
Total number of patents in this class: 382
10-year publication summary
|
34
|
42
|
39
|
41
|
27
|
33
|
18
|
23
|
21
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hewlett-Packard Development Company, L.P. | 26130 |
18 |
| Mitsubishi Electric Corporation | 45414 |
16 |
| Fisher & Paykel Healthcare Limited | 2395 |
7 |
| Robert Bosch GmbH | 42170 |
6 |
| Advanced Liquid Logic, Inc. | 154 |
5 |
| Altria Client Services LLC | 2146 |
5 |
| Fujikin Incorporated | 694 |
5 |
| Vega Grieshaber KG | 746 |
5 |
| Honeywell International Inc. | 13611 |
4 |
| Murata Manufacturing Co., Ltd. | 24137 |
4 |
| Areva NP GmbH | 71 |
4 |
| GSI Électronique Inc. | 37 |
4 |
| Tank Vision, Inc. | 4 |
4 |
| Robert Bosch Limitada | 121 |
4 |
| Silicon Controls Pty Ltd. | 32 |
4 |
| The Boeing Company | 19956 |
3 |
| Caterpillar Inc. | 9356 |
3 |
| Pitco Frialator, Inc. | 50 |
3 |
| Scania CV AB | 2378 |
3 |
| Simmonds Precision Products, Inc. | 264 |
3 |
| Other owners | 272 |