- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01C - Rotary-piston or oscillating-piston machines or engines
- F01C 21/18 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Patent holdings for IPC class F01C 21/18
Total number of patents in this class: 162
10-year publication summary
|
26
|
23
|
22
|
17
|
11
|
21
|
8
|
19
|
9
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 4215 |
32 |
| Sanden Corporation | 859 |
8 |
| Exdl Co., Ltd. | 14 |
8 |
| LG Electronics Inc. | 69257 |
4 |
| Daikin Industries, Ltd. | 9495 |
4 |
| Emerson Climate Technologies (Suzhou) Co., Ltd. | 172 |
4 |
| Danfoss A/S | 1259 |
4 |
| Eaton Corporation | 1839 |
3 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
3 |
| Copeland LP | 656 |
3 |
| Robert Bosch GmbH | 40953 |
2 |
| Mitsubishi Electric Corporation | 43934 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
2 |
| Purdue Research Foundation | 3277 |
2 |
| Atlas Copco Airpower, naamloze vennootschap | 915 |
2 |
| Atlas Copco Industrial Technique AB | 426 |
2 |
| Nitto Kohki Co., Ltd. | 280 |
2 |
| REGI U.S., Inc. | 10 |
2 |
| SNAP-ON Incorporated | 1385 |
2 |
| Yamada Manufacturing Co., Ltd. | 141 |
2 |
| Other owners | 69 |