- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F23D - Burners
- F23D 11/38 - NozzlesCleaning devices therefor
Patent holdings for IPC class F23D 11/38
Total number of patents in this class: 304
10-year publication summary
|
38
|
23
|
42
|
37
|
16
|
13
|
15
|
10
|
10
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24525 |
24 |
| Collins Engine Nozzles, Inc. | 282 |
24 |
| Rtx Corporation | 9325 |
19 |
| General Electric Company | 13829 |
18 |
| Pratt & Whitney Canada Corp. | 4700 |
17 |
| GE Infrastructure Technology, LLC | 6209 |
15 |
| Mitsubishi Hitachi Power Systems, Ltd. | 993 |
8 |
| Siemens Energy Global GmbH & Co. KG | 2937 |
8 |
| Rolls-Royce PLC | 3073 |
7 |
| ClearSign Technologies Corporation | 52 |
7 |
| Halliburton Energy Services, Inc. | 20835 |
6 |
| Mitsubishi Heavy Industries, Ltd. | 8685 |
6 |
| Air Products and Chemicals, Inc. | 1416 |
6 |
| Delavan Inc | 30 |
6 |
| Woodward, Inc. | 644 |
6 |
| Mitsubishi Power, Ltd. | 1760 |
6 |
| IHI Corporation | 3414 |
5 |
| Babcock-Hitachi Kabushiki Kaisha | 103 |
4 |
| Safran Helicopter Engines | 754 |
4 |
| Kawasaki Heavy Industries, Limited | 1627 |
3 |
| Other owners | 105 |