- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F22B - Methods of steam generationsteam boilers
- F22B 27/02 - Instantaneous or flash steam boilers built-up from fire tubes
Patent holdings for IPC class F22B 27/02
Total number of patents in this class: 6
10-year publication summary
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Northrop Grumman Systems Corporation | 2933 |
4 |
| Alliant Techsystems Inc. | 46 |
1 |
| Lochinvar Corporation | 3 |
1 |
| Other owners | 0 |