- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04B - Positive-displacement machines for liquids; pumps
- F04B 53/02 - Packing the free space between cylinders and pistons
Patent holdings for IPC class F04B 53/02
Total number of patents in this class: 195
10-year publication summary
21
|
15
|
19
|
14
|
17
|
22
|
16
|
28
|
12
|
5
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Robert Bosch GmbH | 40953 |
22 |
SPM Oil & Gas Inc. | 304 |
12 |
Halliburton Energy Services, Inc. | 20165 |
8 |
Haier US Appliance Solutions, Inc. | 3178 |
5 |
S.P.M. Flow Control, Inc. | 101 |
5 |
Graco Minnesota Inc. | 1124 |
4 |
Nuovo Pignone Tecnologie S.r.l. | 789 |
4 |
Vulcan Industrial Holdings LLC | 34 |
4 |
GD Energy Products, LLC | 78 |
4 |
Shimadzu Corporation | 5791 |
3 |
Eveon | 36 |
3 |
Maximator GmbH | 15 |
3 |
Westport Fuel Systems Canada Inc. | 246 |
3 |
Denso Corporation | 23338 |
2 |
Caterpillar Inc. | 8877 |
2 |
Air Products and Chemicals, Inc. | 1448 |
2 |
Ameriforge Group Inc. | 40 |
2 |
A.W. Chesterton Company | 80 |
2 |
Bosch Rexroth Corporation | 17 |
2 |
Burckhardt Compression AG | 116 |
2 |
Other owners | 101 |