- 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: 660
10-year publication summary
|
71
|
96
|
68
|
50
|
48
|
47
|
51
|
30
|
33
|
21
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 4716 |
49 |
| LG Electronics Inc. | 72807 |
25 |
| Edwards Limited | 791 |
25 |
| Pierburg Pump Technology GmbH | 323 |
20 |
| Robert Bosch GmbH | 42632 |
17 |
| Rotoliptic Technologies Incorporated | 20 |
13 |
| Schwabische Huttenwerke Automotive GmbH | 63 |
11 |
| Hitachi Astemo, Ltd. | 6387 |
11 |
| Toyota Industries Corporation | 1112 |
10 |
| Pfeiffer Vacuum | 170 |
10 |
| Ateliers Busch SA | 51 |
9 |
| Atlas Copco Airpower, naamloze vennootschap | 1026 |
9 |
| Robert Bosch Automotive Steering GmbH | 154 |
9 |
| Exdl Co., Ltd. | 12 |
9 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1452 |
8 |
| Daikin Industries, Ltd. | 9991 |
7 |
| Schaeffler Technologies AG & Co. KG | 9818 |
7 |
| KYB Corporation | 1356 |
7 |
| Hamilton Sundstrand Corporation | 4853 |
6 |
| NETZSCH Pumpen & Systeme GmbH | 97 |
6 |
| Other owners | 392 |