- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F42B - Explosive charges, e.g. for blastingfireworksammunition
- F42B 4/28 - Parachute flares
Patent holdings for IPC class F42B 4/28
Total number of patents in this class: 11
10-year publication summary
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2
|
1
|
1
|
0
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0
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0
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0
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0
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0
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1
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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 | 2913 |
3 |
| BAE SYSTEMS plc | 2524 |
2 |
| Rheinmetall Waffe Munition GmbH | 565 |
2 |
| The Boeing Company | 20212 |
1 |
| The United States of America as represented by the Secretary of the Army | 1264 |
1 |
| Pehutec Oy | 1 |
1 |
| Rheinmetall Waffe Munition GmbH, Patente | 15 |
1 |
| Other owners | 0 |