- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F03C - Positive-displacement engines driven by liquids
- F03C 4/00 - Oscillating-piston engines
Patent holdings for IPC class F03C 4/00
Total number of patents in this class: 749
10-year publication summary
|
96
|
72
|
51
|
46
|
43
|
35
|
30
|
7
|
0
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 75845 |
61 |
| Copeland LP | 705 |
42 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1547 |
22 |
| Daikin Industries, Ltd. | 10511 |
21 |
| Mitsubishi Electric Corporation | 48097 |
14 |
| Hamilton Sundstrand Corporation | 5013 |
14 |
| Bitzer Kuehlmaschinenbau GmbH | 158 |
14 |
| Hitachi Astemo, Ltd. | 6411 |
13 |
| Mitsubishi Heavy Industries, Ltd. | 9152 |
11 |
| Denso Corporation | 25607 |
11 |
| Panasonic Intellectual Property Management Co., Ltd. | 34080 |
11 |
| Edwards Limited | 774 |
10 |
| Fujitsu General Limited | 597 |
10 |
| Robert Bosch GmbH | 44209 |
9 |
| Hanon Systems | 2109 |
9 |
| Schwabische Huttenwerke Automotive GmbH | 62 |
8 |
| CIRCOR Pumps North America, LLC | 36 |
8 |
| Kobelco Compressors Corporation | 70 |
8 |
| Carrier Corporation | 3951 |
7 |
| Joma-Polytec GmbH | 51 |
7 |
| Other owners | 439 |