- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F42B - Explosive charges, e.g. for blasting; fireworks; ammunition
- 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
|
3
|
2
|
2
|
1
|
1
|
0
|
0
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Northrop Grumman Systems Corporation | 2940 |
3 |
| BAE SYSTEMS plc | 2215 |
2 |
| Rheinmetall Waffe Munition GmbH | 559 |
2 |
| The Boeing Company | 19843 |
1 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
1 |
| Pehutec Oy | 1 |
1 |
| Rheinmetall Waffe Munition GmbH, Patente | 15 |
1 |
| Other owners | 0 |