- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01C - Rotary-piston or oscillating-piston machines or engines
- F01C 21/10 - Outer members for co-operation with rotary pistonsCasings
Patent holdings for IPC class F01C 21/10
Total number of patents in this class: 651
10-year publication summary
|
71
|
96
|
68
|
50
|
48
|
47
|
51
|
29
|
33
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 4475 |
42 |
| LG Electronics Inc. | 71838 |
25 |
| Edwards Limited | 788 |
25 |
| Pierburg Pump Technology GmbH | 321 |
20 |
| Robert Bosch GmbH | 42126 |
17 |
| Rotoliptic Technologies Incorporated | 20 |
13 |
| Schwabische Huttenwerke Automotive GmbH | 66 |
11 |
| Hitachi Astemo, Ltd. | 6261 |
11 |
| Toyota Industries Corporation | 1080 |
10 |
| Pfeiffer Vacuum | 168 |
10 |
| Ateliers Busch SA | 51 |
9 |
| Atlas Copco Airpower, naamloze vennootschap | 993 |
9 |
| Robert Bosch Automotive Steering GmbH | 157 |
9 |
| Exdl Co., Ltd. | 12 |
9 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1438 |
8 |
| Daikin Industries, Ltd. | 9932 |
7 |
| Schaeffler Technologies AG & Co. KG | 9601 |
7 |
| KYB Corporation | 1342 |
7 |
| Hamilton Sundstrand Corporation | 4795 |
6 |
| NETZSCH Pumpen & Systeme GmbH | 99 |
6 |
| Other owners | 390 |