- All sections
- B - Performing operations; transporting
- B04B - Centrifuges
- B04B 5/08 - Centrifuges for separating predominantly gaseous mixtures
Patent holdings for IPC class B04B 5/08
Total number of patents in this class: 81
10-year publication summary
4
|
5
|
8
|
9
|
11
|
6
|
5
|
7
|
2
|
3
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Alfa Laval Corporate AB | 1265 |
18 |
Alfdex AB | 43 |
8 |
Tokyo ROKI Co., Ltd. | 67 |
5 |
Aerodyne Microsystems Inc., a Delaware Corporation | 9 |
5 |
Safran Helicopter Engines | 676 |
4 |
ElringKlinger AG | 487 |
3 |
Grimaldi Development AB | 24 |
3 |
The United States of America as represented by the Secretary of the Army | 1195 |
2 |
3nine AB | 22 |
2 |
Edwards Limited | 764 |
2 |
Reyco Systems, Inc. | 9 |
2 |
Hengst SE | 126 |
2 |
Shell Internationale Research Maatschappij B.V. | 3792 |
1 |
Shell Oil Company | 2196 |
1 |
Areva GmbH | 90 |
1 |
Comex AS | 1 |
1 |
Dresser-Rand Company | 233 |
1 |
Freevalve AB | 45 |
1 |
H R D Corporation | 87 |
1 |
Hengst GmbH & Co. KG | 64 |
1 |
Other owners | 17 |