- 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 |