Compact electric detonator with built-in electromagnetic interference (emi) filter and method of assembling the same
US-2026071856-A1 · Mar 12, 2026 · US
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having radio-frequency filters {, e.g. containing ferrite cores or inductances (F42B3/185 takes precedence)}
having radio-frequency filters {, e.g. containing ferrite cores or inductances (F42B3/185 takes precedence)} · 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 | F42B3/188 |
| Official title | having radio-frequency filters {, e.g. containing ferrite cores or inductances (F42B3/185 takes precedence)} |
| Display label | having radio-frequency filters {, e.g. containing ferrite cores or inductances (F42B3/185 takes precedence)} |
| Total patents | 6 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2021 | 2 |
| 2024 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
RF attenuating switch
US-12078461-B2 · Sep 3, 2024 · US
Rf Attenuating Switch
US-2021341265-A1 · Nov 4, 2021 · US
RF attenuating switch for use with explosives and method of using the same
US-11067369-B2 · Jul 20, 2021 · US
Rf attenuating switch
US-2017176152-A1 · Jun 22, 2017 · US
Electric and magnetic field hardened igniter for electrically fired ammunition
US-9157708-B1 · Oct 13, 2015 · US