- All sections
- G - Physics
- G05D - Systems for controlling or regulating non-electric variables
- G05D 21/02 - Control of chemical or physico-chemical variables, e.g. pH-value characterised by the use of electric means
Patent holdings for IPC class G05D 21/02
Total number of patents in this class: 202
10-year publication summary
|
11
|
19
|
24
|
18
|
20
|
20
|
15
|
18
|
5
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hayward Industries, Inc. | 669 |
6 |
| Robert Bosch GmbH | 40953 |
5 |
| Hamilton Sundstrand Corporation | 4525 |
5 |
| Nalco Company | 620 |
5 |
| Pentair Water Pool and Spa, Inc. | 457 |
5 |
| Texon LP | 20 |
5 |
| Spray-net Franchises Inc. | 7 |
5 |
| Cytiva Sweden AB | 741 |
5 |
| General Electric Company | 18133 |
4 |
| Judo Wasseraufbereitung GmbH | 126 |
4 |
| Saudi Arabian Oil Company | 11322 |
4 |
| Hoffmann-La Roche Inc. | 3060 |
3 |
| BASF SE | 19740 |
3 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
3 |
| Alstom Technology Ltd | 1196 |
3 |
| Ecolab USA Inc. | 5190 |
3 |
| FUJIFILM Diosynth Biotechnologies UK Limited | 65 |
3 |
| Lantheus Medical Imaging, Inc. | 174 |
3 |
| SunCor Energy Inc. | 838 |
3 |
| Siemens AG | 24990 |
2 |
| Other owners | 123 |