- All sections
- G - Physics
- G05D - Systems for controlling or regulating non-electric variables
- G05D 9/04 - Level control, e.g. controlling quantity of material stored in vessel with auxiliary non-electric power
Patent holdings for IPC class G05D 9/04
Total number of patents in this class: 16
10-year publication summary
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0
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1
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2
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2
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2
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2
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3
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1
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0
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1
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Adel Wiggins Group | 13 |
3 |
| The Charles Machine Works, Inc. | 405 |
3 |
| GM Global Technology Operations LLC | 15042 |
1 |
| Allison Transmission, Inc. | 835 |
1 |
| CIRCOR International, Inc., (a Delaware Corporation), | 11 |
1 |
| Dean Edward Mackey | 2 |
1 |
| Liberty Pumps Inc. | 46 |
1 |
| Tara Oilfield Services Ltd. | 4 |
1 |
| ThyssenKrupp Uhde GmbH | 331 |
1 |
| Vestas Wind Systems A/S | 3676 |
1 |
| Dhf America, LLC. | 9 |
1 |
| Conair LLC | 1323 |
1 |
| Other owners | 0 |