Ammunition blank and corresponding bolt
US-2026063402-A1 · Mar 5, 2026 · US
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Blank cartridges, i.e. primed cartridges without projectile but containing an explosive or combustible powder charge
Blank cartridges, i.e. primed cartridges without projectile but containing an explosive or combustible powder charge · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F42B8/04 |
| Official title | Blank cartridges, i.e. primed cartridges without projectile but containing an explosive or combustible powder charge |
| Display label | Blank cartridges, i.e. primed cartridges without projectile but containing an explosive or combustible powder charge |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ammunition blank and corresponding bolt
US-12467727-B2 · Nov 11, 2025 · US
Ammunition blank and corresponding bolt
US-2024230293-A1 · Jul 11, 2024 · US
Muzzleloader systems
US-11668549-B2 · Jun 6, 2023 · US
Muzzleloader systems
US-2022049942-A1 · Feb 17, 2022 · US
Muzzleloader systems
US-11047660-B2 · Jun 29, 2021 · US
Remotely actuated multi-use modular explosive ordnance disposal rocket dearmer
US-10928173-B1 · Feb 23, 2021 · US
Muzzleloader systems
US-2020284567-A1 · Sep 10, 2020 · US
Muzzleloader systems
US-10605577-B2 · Mar 31, 2020 · US
Cartridge casing for a blank cartridge
US-10274294-B2 · Apr 30, 2019 · US
Portable IED training device
US-10161729-B1 · Dec 25, 2018 · US
Muzzleloader systems
US-2018321022-A1 · Nov 8, 2018 · US
Low impact threat rupture device for explosive ordnance disruptor
US-10066916-B1 · Sep 4, 2018 · US
Muzzleloader systems
US-10030956-B2 · Jul 24, 2018 · US
Cartridge casing for a blank cartridge
US-2018058829-A1 · Mar 1, 2018 · US
Muzzleloader systems
US-2017307347-A1 · Oct 26, 2017 · US
Muzzleloader systems
US-9562754-B2 · Feb 7, 2017 · US
Muzzleloader systems
US-9329003-B2 · May 3, 2016 · US
Muzzleloader bullet system
US-9146086-B2 · Sep 29, 2015 · US