- 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: 307
10-year publication summary
|
32
|
22
|
39
|
33
|
15
|
13
|
12
|
11
|
10
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24352 |
24 |
| Collins Engine Nozzles, Inc. | 284 |
24 |
| General Electric Company | 13858 |
20 |
| Rtx Corporation | 9461 |
20 |
| Pratt & Whitney Canada Corp. | 4834 |
18 |
| GE Infrastructure Technology, LLC | 6250 |
15 |
| Mitsubishi Hitachi Power Systems, Ltd. | 993 |
8 |
| Siemens Energy Global GmbH & Co. KG | 3026 |
8 |
| Rolls-Royce PLC | 3134 |
7 |
| ClearSign Technologies Corporation | 52 |
7 |
| Halliburton Energy Services, Inc. | 20964 |
6 |
| Mitsubishi Heavy Industries, Ltd. | 8803 |
6 |
| Air Products and Chemicals, Inc. | 1447 |
6 |
| Delavan Inc | 30 |
6 |
| Woodward, Inc. | 648 |
6 |
| Mitsubishi Power, Ltd. | 1788 |
6 |
| IHI Corporation | 3452 |
5 |
| Babcock-Hitachi Kabushiki Kaisha | 102 |
4 |
| Edwards Limited | 790 |
4 |
| Safran Helicopter Engines | 768 |
4 |
| Other owners | 103 |