- 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 25/02 - Adaptations for special use of pumps for elastic fluids for producing high vacuum
Patent holdings for IPC class F04C 25/02
Total number of patents in this class: 629
10-year publication summary
55
|
45
|
67
|
66
|
54
|
52
|
63
|
47
|
52
|
10
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Edwards Limited | 764 |
99 |
Pfeiffer Vacuum | 153 |
56 |
Pierburg Pump Technology GmbH | 305 |
37 |
Leybold GmbH | 293 |
37 |
Ateliers Busch SA | 53 |
28 |
ULVAC, Inc. | 1448 |
22 |
Oerlikon Leybold Vacuum GmbH | 117 |
17 |
Atlas Copco Airpower, naamloze vennootschap | 915 |
15 |
Taiho Kogyo Co., Ltd. | 341 |
14 |
Agilent Technologies, Inc. | 2744 |
12 |
Ebara Corporation | 1951 |
11 |
Hella GmbH & Co. KGaA | 1392 |
10 |
Edwards Japan Limited | 376 |
9 |
Nabtesco Automotive Corporation | 127 |
9 |
Sanoh Industrial Co., Ltd. | 189 |
8 |
Mikuni Corporation | 332 |
7 |
Edwards Technologies Vacuum Engineering (Qingdao) Co Ltd | 21 |
7 |
Leybold France SAS | 12 |
7 |
Gebr. Becker GmbH | 49 |
6 |
WABCO Europe BVBA | 228 |
6 |
Other owners | 212 |