- 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: 222
10-year publication summary
|
14
|
12
|
17
|
7
|
9
|
12
|
15
|
13
|
19
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
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 | 4117 |
12 |
| Tenova S.p.A. | 158 |
10 |
| Praxair Technology, Inc. | 1222 |
9 |
| Kyungdong Navien Co., Ltd. | 643 |
8 |
| Chugai Ro Co., Ltd. | 130 |
7 |
| IHI Corporation | 3535 |
7 |
| WS Warmeprozesstechnik GmbH | 41 |
6 |
| American Air Liquide, Inc. | 267 |
5 |
| Midea Group Co., Ltd. | 5028 |
5 |
| Wuhu Midea Kitchen and Bath Appliances Mfg. Co., Ltd. | 240 |
5 |
| Linde Aktiengesellschaft | 1421 |
4 |
| Selas Heat Technology Company LLC | 44 |
4 |
| NGK Insulators, Ltd. | 5236 |
3 |
| NOVA Chemicals (International) S.A. | 797 |
3 |
| Saint-Gobain Ceramics & Plastics, Inc. | 805 |
3 |
| ESA S.p.A. | 12 |
3 |
| Kueppers Solutions GmbH | 9 |
3 |
| Linde GmbH | 1360 |
3 |
| Nissan Motor Co., Ltd. | 12964 |
2 |
| Bloom Engineering Company, Inc. | 24 |
2 |
| Other owners | 118 |