- 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 18/08 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
Patent holdings for IPC class F04C 18/08
Total number of patents in this class: 210
10-year publication summary
28
|
22
|
18
|
26
|
21
|
20
|
21
|
13
|
8
|
2
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Edwards Limited | 764 |
16 |
Atlas Copco Airpower, naamloze vennootschap | 915 |
14 |
Leybold GmbH | 293 |
10 |
Industrial Technologies and Services, LLC | 83 |
9 |
Eaton Intelligent Power Limited | 6113 |
7 |
Gardner Denver, LLC | 20 |
7 |
Kaeser KOMPRESSOREN SE | 166 |
6 |
Carrier Corporation | 4759 |
5 |
Eaton Corporation | 1839 |
4 |
Toyota Industries Corporation | 1010 |
4 |
Jurop S.p.A. | 15 |
4 |
Pfeiffer Vacuum | 153 |
4 |
Johnson Controls Tyco IP Holdings LLP | 1584 |
4 |
Robert Bosch GmbH | 40953 |
3 |
Ateliers Busch SA | 53 |
3 |
GREE Electric Appliances, Inc. of Zhuhai | 3007 |
3 |
Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
3 |
Oerlikon Leybold Vacuum GmbH | 117 |
3 |
Sterling Industry Consult GmbH | 20 |
3 |
Hitachi-johnson Controls Air Conditioning, Inc. | 499 |
3 |
Other owners | 95 |