- 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: 72
10-year publication summary
|
7
|
5
|
3
|
8
|
3
|
7
|
7
|
7
|
7
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GD Midea Heating & Ventilating Equipment Co., Ltd. | 768 |
3 |
| Vahterus Oy | 70 |
3 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 720 |
3 |
| Denso Corporation | 25676 |
2 |
| The Yokohama Rubber Co., Ltd. | 4114 |
2 |
| Arkema Inc. | 1059 |
2 |
| Kobe Steel, Ltd. | 900 |
2 |
| Midea Group Co., Ltd. | 5060 |
2 |
| Wuhu Midea Kitchen and Bath Appliances Mfg. Co., Ltd. | 247 |
2 |
| Treau, Inc. | 26 |
2 |
| Toyota Motor Corporation | 35992 |
1 |
| Honeywell International Inc. | 12770 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 9172 |
1 |
| Pratt & Whitney Canada Corp. | 5523 |
1 |
| Mitsubishi Electric Corporation | 48236 |
1 |
| Lockheed Martin Corporation | 3254 |
1 |
| Daikin Industries, Ltd. | 10513 |
1 |
| Chevron U.S.A. Inc. | 4162 |
1 |
| Alfa Laval Corporate AB | 1343 |
1 |
| ATI Properties LLC | 199 |
1 |
| Other owners | 39 |