- All sections
- B - Performing operationstransporting
- B04C - Apparatus using free vortex flow, e.g. cyclones
- B04C 5/30 - Recirculation constructions in or with cyclones which accomplish a partial recirculation of the medium, e.g. by means of conduits
Patent holdings for IPC class B04C 5/30
Total number of patents in this class: 27
10-year publication summary
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1
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2
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2
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3
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2
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1
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1
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2
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3
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2
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| National Oilwell Varco, L.P. | 1700 |
5 |
| FMC Technologies, Inc. | 620 |
4 |
| Petroleo Brasileiro S.A. - Petrobras | 977 |
2 |
| HALEY, Stephen | 4 |
2 |
| Shell Internationale Research Maatschappij B.V. | 3390 |
1 |
| Massachusetts Institute of Technology | 10305 |
1 |
| Shell Oil Company | 2064 |
1 |
| Andritz AG | 247 |
1 |
| IMI Hydronic Engineering International S.A. | 118 |
1 |
| JCI Cyclonics Ltd. | 4 |
1 |
| Midea Group Co., Ltd. | 5080 |
1 |
| The University of Tulsa | 109 |
1 |
| Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | 6102 |
1 |
| Sundrop IP Holdings, LLC | 12 |
1 |
| Tigerstone Technologies Limited | 1 |
1 |
| Guangdong Midea White Home Appliance Technology Innovation Center Co. Ltd. | 323 |
1 |
| Jadyba B.V. | 1 |
1 |
| Stephen Haley | 1 |
1 |
| Other owners | 0 |