- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F23L - Supplying air or non-combustible liquids or gases to combustion apparatus in generalvalves or dampers specially adapted for controlling air supply or draught in combustion apparatusinducing draught in combustion apparatustops for chimneys or ventilating shaftsterminals for flues
- F23L 15/04 - Arrangements of recuperators
Patent holdings for IPC class F23L 15/04
Total number of patents in this class: 229
10-year publication summary
|
22
|
19
|
18
|
19
|
16
|
9
|
21
|
17
|
6
|
11
|
| 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 | 3985 |
29 |
| WS Warmeprozesstechnik GmbH | 41 |
9 |
| American Air Liquide, Inc. | 252 |
6 |
| 8 Rivers Capital, LLC | 235 |
4 |
| Fives Stein | 105 |
4 |
| ESA S.p.A. | 10 |
4 |
| Mitsubishi Power, Ltd. | 1772 |
4 |
| Honeywell International Inc. | 13540 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 8752 |
3 |
| Alstom Technology Ltd | 1100 |
3 |
| AGC Glass Europe | 1133 |
3 |
| Corrosion Monitoring Service, Inc. | 6 |
3 |
| IFP Energies Nouvelles | 2937 |
3 |
| IHI Corporation | 3450 |
3 |
| Kyungdong Navien Co., Ltd. | 618 |
3 |
| Selas Heat Technology Company LLC | 43 |
3 |
| Suzhou Tpri Ener & Enviro Tech Co., Ltd. | 29 |
3 |
| Robert Bosch GmbH | 42705 |
2 |
| Air Products and Chemicals, Inc. | 1443 |
2 |
| Doosan Heavy Industries & Construction Co., Ltd. | 581 |
2 |
| Other owners | 133 |