- 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 18/344 - Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups , , , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
Patent holdings for IPC class F04C 18/344
Total number of patents in this class: 589
10-year publication summary
55
|
67
|
72
|
71
|
41
|
42
|
34
|
33
|
27
|
6
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
LG Electronics Inc. | 69257 |
46 |
Pierburg Pump Technology GmbH | 305 |
32 |
Mitsubishi Electric Corporation | 43934 |
30 |
GREE Electric Appliances, Inc. of Zhuhai | 3007 |
26 |
Taiho Kogyo Co., Ltd. | 341 |
22 |
Calsonic Kansei Corporation | 686 |
21 |
Ixetic Huckeswagen GmbH | 45 |
20 |
Joma-hydromechanic GmbH | 25 |
16 |
Valeo Japan Co., Ltd. | 292 |
16 |
Joma-Polytec GmbH | 45 |
12 |
Vhit S.p.A. | 64 |
12 |
Hella GmbH & Co. KGaA | 1392 |
11 |
Denso Corporation | 23338 |
10 |
Mikuni Corporation | 332 |
10 |
Ateliers Busch SA | 53 |
9 |
Nabtesco Automotive Corporation | 127 |
9 |
Hanon Systems EFP Deutschland GmbH | 79 |
9 |
Gebr. Becker GmbH | 49 |
8 |
Green Refrigeration Equipment Engineering Research Center of Zhuhai GREE Co., Ltd. | 74 |
8 |
WABCO Europe BVBA | 228 |
8 |
Other owners | 254 |