- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 11/00 - Arrangements for sealing leaky tubes or conduits
Patent holdings for IPC class F28F 11/00
Total number of patents in this class: 70
10-year publication summary
|
6
|
7
|
5
|
3
|
8
|
3
|
7
|
7
|
7
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Vahterus Oy | 71 |
3 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 523 |
3 |
| Denso Corporation | 23985 |
2 |
| The Yokohama Rubber Co., Ltd. | 3998 |
2 |
| Arkema Inc. | 1057 |
2 |
| ATI Properties LLC | 204 |
2 |
| GD Midea Heating & Ventilating Equipment Co., Ltd. | 583 |
2 |
| Kobe Steel, Ltd. | 864 |
2 |
| Midea Group Co., Ltd. | 4422 |
2 |
| Rheem Manufacturing Company | 951 |
2 |
| Wuhu Midea Kitchen and Bath Appliances Mfg. Co., Ltd. | 168 |
2 |
| Treau, Inc. | 23 |
2 |
| Toyota Motor Corporation | 30756 |
1 |
| Honeywell International Inc. | 13607 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8569 |
1 |
| Pratt & Whitney Canada Corp. | 4454 |
1 |
| Mitsubishi Electric Corporation | 45328 |
1 |
| Lockheed Martin Corporation | 3282 |
1 |
| Chevron U.S.A. Inc. | 3901 |
1 |
| Alfa Laval Corporate AB | 1292 |
1 |
| Other owners | 36 |