- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F23K - Feeding fuel to combustion apparatus
- F23K 5/20 - Preheating devices
Patent holdings for IPC class F23K 5/20
Total number of patents in this class: 60
10-year publication summary
|
6
|
2
|
3
|
1
|
3
|
3
|
4
|
10
|
3
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Green Eco Labs, LLC | 8 |
6 |
| General Electric Company | 13915 |
4 |
| Kal-fire Beheer B.V. | 25 |
4 |
| Rolls-Royce PLC | 3224 |
3 |
| American Air Liquide, Inc. | 267 |
3 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4122 |
3 |
| Siemens AG | 23996 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 9168 |
2 |
| Coolbrook Oy | 73 |
2 |
| General Electric Technology GmbH | 1336 |
2 |
| IHI Corporation | 3527 |
2 |
| Nexterra Systems Corp. | 13 |
2 |
| Webasto SE | 1191 |
2 |
| Illinois Tool Works Inc. | 11862 |
1 |
| Shell Internationale Research Maatschappij B.V. | 3394 |
1 |
| Toyota Motor Corporation | 35927 |
1 |
| Shell Oil Company | 2068 |
1 |
| Foret Plasma Labs, LLC | 64 |
1 |
| Hephzibah Co., Ltd. | 20 |
1 |
| Homestead Engineering Inc. | 2 |
1 |
| Other owners | 16 |