- All sections
- B - Performing operationstransporting
- B04B - Centrifuges
- B04B 1/20 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
Patent holdings for IPC class B04B 1/20
Total number of patents in this class: 311
10-year publication summary
|
19
|
15
|
27
|
17
|
32
|
24
|
27
|
24
|
10
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Flottweg SE | 87 |
39 |
| GEA Mechanical Equipment GmbH | 246 |
39 |
| Alfa Laval Corporate AB | 1310 |
37 |
| Tomoe Engineering Co., Ltd. | 46 |
21 |
| Andritz S.A.S. | 23 |
14 |
| GEA Westfalia Separator Group GmbH | 98 |
12 |
| Fluid Quip Technologies, LLC | 86 |
10 |
| FLSmidth A/S | 772 |
5 |
| GEA Westfalia Separator GmbH | 24 |
4 |
| National Oilwell Varco, L.P. | 1661 |
4 |
| Westfalia Separator GmbH | 4 |
4 |
| Ymir Technologies ehf. | 11 |
4 |
| 650438 Alberta Ltd. | 4 |
3 |
| Derrick Corporation | 245 |
3 |
| Hiller GmbH | 15 |
3 |
| Korea Institute of Machinery & Materials | 744 |
3 |
| M-I L.L.C. | 815 |
3 |
| MANN+HUMMEL GmbH | 1752 |
3 |
| Recover Energy Services Inc. | 51 |
3 |
| SIEBTECHNIK GmbH | 12 |
3 |
| Other owners | 94 |