- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F23D - Burners
- F23D 14/66 - Preheating the combustion air or gas
Patent holdings for IPC class F23D 14/66
Total number of patents in this class: 195
10-year publication summary
|
13
|
14
|
12
|
17
|
7
|
9
|
11
|
15
|
13
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3878 |
13 |
| Praxair Technology, Inc. | 1318 |
8 |
| IHI Corporation | 3382 |
7 |
| Kyungdong Navien Co., Ltd. | 598 |
7 |
| Chugai Ro Co., Ltd. | 126 |
6 |
| Tenova S.p.A. | 153 |
6 |
| WS Warmeprozesstechnik GmbH | 40 |
6 |
| American Air Liquide, Inc. | 245 |
5 |
| Linde Aktiengesellschaft | 1532 |
4 |
| Midea Group Co., Ltd. | 4435 |
4 |
| Wuhu Midea Kitchen and Bath Appliances Mfg. Co., Ltd. | 169 |
4 |
| NOVA Chemicals (International) S.A. | 763 |
3 |
| Selas Heat Technology Company LLC | 41 |
3 |
| Kueppers Solutions GmbH | 9 |
3 |
| Linde GmbH | 1247 |
3 |
| Nissan Motor Co., Ltd. | 12335 |
2 |
| NGK Insulators, Ltd. | 4856 |
2 |
| Bloom Engineering Company, Inc. | 24 |
2 |
| Brunswick Corporation | 1325 |
2 |
| Cambridge Engineering, Inc. | 16 |
2 |
| Other owners | 103 |