- 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: 203
10-year publication summary
|
13
|
12
|
11
|
16
|
7
|
9
|
11
|
13
|
13
|
14
|
| 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 | 4003 |
13 |
| Praxair Technology, Inc. | 1283 |
9 |
| Tenova S.p.A. | 156 |
8 |
| Chugai Ro Co., Ltd. | 129 |
7 |
| IHI Corporation | 3452 |
7 |
| Kyungdong Navien Co., Ltd. | 618 |
7 |
| WS Warmeprozesstechnik GmbH | 41 |
6 |
| American Air Liquide, Inc. | 252 |
5 |
| Linde Aktiengesellschaft | 1496 |
4 |
| Midea Group Co., Ltd. | 4612 |
4 |
| Wuhu Midea Kitchen and Bath Appliances Mfg. Co., Ltd. | 170 |
4 |
| NOVA Chemicals (International) S.A. | 778 |
3 |
| Selas Heat Technology Company LLC | 43 |
3 |
| Kueppers Solutions GmbH | 9 |
3 |
| Linde GmbH | 1265 |
3 |
| Nissan Motor Co., Ltd. | 12560 |
2 |
| NGK Insulators, Ltd. | 5103 |
2 |
| Bloom Engineering Company, Inc. | 24 |
2 |
| Brunswick Corporation | 1378 |
2 |
| Cambridge Engineering, Inc. | 16 |
2 |
| Other owners | 107 |