- All sections
- B - Performing operations; transporting
- 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: 307
10-year publication summary
|
26
|
19
|
15
|
27
|
17
|
32
|
24
|
27
|
21
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Flottweg SE | 88 |
39 |
| GEA Mechanical Equipment GmbH | 253 |
39 |
| Alfa Laval Corporate AB | 1265 |
35 |
| Tomoe Engineering Co., Ltd. | 48 |
21 |
| Andritz S.A.S. | 25 |
14 |
| Fluid Quip Technologies, LLC | 76 |
8 |
| Hiller GmbH | 6 |
5 |
| GEA Westfalia Separator GmbH | 23 |
4 |
| GEA Westfalia Separator Group GmbH | 60 |
4 |
| National Oilwell Varco, L.P. | 1604 |
4 |
| Westfalia Separator GmbH | 4 |
4 |
| Ymir Technologies ehf. | 11 |
4 |
| 650438 Alberta Ltd. | 4 |
3 |
| Derrick Corporation | 230 |
3 |
| Korea Institute of Machinery & Materials | 677 |
3 |
| M-I L.L.C. | 893 |
3 |
| MANN+HUMMEL GmbH | 1682 |
3 |
| Recover Energy Services Inc. | 52 |
3 |
| SIEBTECHNIK GmbH | 14 |
3 |
| Sudzucker Aktiengesellschaft | 123 |
3 |
| Other owners | 102 |