- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; rotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 19/00 - Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
Patent holdings for IPC class F04C 19/00
Total number of patents in this class: 143
10-year publication summary
17
|
16
|
14
|
17
|
13
|
13
|
11
|
7
|
9
|
3
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Edwards Technologies Vacuum Engineering (Qingdao) Co Ltd | 21 |
17 |
Edwards Limited | 764 |
14 |
Gardner Denver Nash, LLC | 31 |
14 |
Sterling Industry Consult GmbH | 20 |
10 |
Woodward, Inc. | 602 |
6 |
Agam Energy Systems Ltd. | 11 |
4 |
DEKA Products Limited Partnership | 1640 |
4 |
Vaccomp Co., Ltd. | 4 |
4 |
Evonik Degussa GmbH | 1574 |
2 |
Ebara Corporation | 1951 |
2 |
China University of Mining and Technology | 1189 |
2 |
Ecofuel Technologies Ltd | 7 |
2 |
ITT Bornemann GmbH | 23 |
2 |
Jets AS | 29 |
2 |
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
2 |
Linde Aktiengesellschaft | 1600 |
2 |
JIANGSU XINCHUANG SAFETY TECHNOLOGY RESEARCH INSTITUTE CO., Ltd. | 5 |
2 |
Omega Automation Co., Ltd. | 2 |
2 |
BASF SE | 19740 |
1 |
Siemens AG | 24990 |
1 |
Other owners | 48 |