- All sections
- B - Performing operationstransporting
- B04B - Centrifuges
- B04B 9/12 - Suspending rotary bowls
Patent holdings for IPC class B04B 9/12
Total number of patents in this class: 167
10-year publication summary
|
13
|
11
|
14
|
9
|
13
|
14
|
25
|
14
|
11
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Alfa Laval Corporate AB | 1311 |
37 |
| GEA Mechanical Equipment GmbH | 246 |
28 |
| GEA Westfalia Separator Group GmbH | 101 |
16 |
| ANDREAS Hettich GmbH & Co. KG | 115 |
11 |
| Alfdex AB | 60 |
6 |
| GEA Westfalia Separator GmbH | 24 |
6 |
| 650438 Alberta Ltd. | 4 |
3 |
| Alfa Wassermann, Inc. | 35 |
3 |
| Fenwal, Inc. | 669 |
3 |
| Flottweg SE | 87 |
3 |
| MANN+HUMMEL GmbH | 1758 |
3 |
| Tomoe Engineering Co., Ltd. | 45 |
3 |
| Life Technologies Corporation | 3298 |
2 |
| Fiberlite Centrifuge, LLC | 52 |
2 |
| Fresenius Medical Care Deutschland GmbH | 2151 |
2 |
| Kubota Manufacturing Corporation | 15 |
2 |
| The Western States Machine Company | 17 |
2 |
| Stamex Technology Co. Ltd. | 3 |
2 |
| BMA Braunschweigische Maschinenbauanstalt GmbH | 16 |
2 |
| Pratt & Whitney Canada Corp. | 4745 |
1 |
| Other owners | 30 |