Wellbore gun perforating system and method
US-2019360315-A1 · Nov 28, 2019 · US
Arrangements for electric ignition (dynamo-electric generators H02K)
Arrangements for electric ignition (dynamo-electric generators H02K) · 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 | F42D1/045 |
| Official title | Arrangements for electric ignition (dynamo-electric generators H02K) |
| Display label | Arrangements for electric ignition (dynamo-electric generators H02K) |
| Total patents | 188 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 14 |
| 2017 | 18 |
| 2018 | 9 |
| 2019 | 18 |
| 2020 | 12 |
| 2021 | 26 |
| 2022 | 27 |
| 2023 | 14 |
| 2024 | 20 |
| 2025 | 21 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods of igniting devices
US-10480920-B2 · Nov 19, 2019 · US
Multi-phasic explosive fracturing system
US-10480301-B2 · Nov 19, 2019 · US
Detonation control
US-10436005-B2 · Oct 8, 2019 · US
Current feed-through wireline release tool and method
US-2019284915-A1 · Sep 19, 2019 · US
Wellbore gun perforating system and method
US-10408024-B2 · Sep 10, 2019 · US
Method of making an initiator head assembly
US-2019242222-A1 · Aug 8, 2019 · US
Initiator head assembly
US-10309199-B2 · Jun 4, 2019 · US
Pressure Activated Selective Perforating Switch Support
US-2019162056-A1 · May 30, 2019 · US
Igniter and Ignition Device for Downhole Setting Tool Power Charge
US-2019128657-A1 · May 2, 2019 · US
Pressure bulkhead structure with integrated selective electronic switch circuitry
US-2019086189-A1 · Mar 21, 2019 · US
Select-fire, downhole shockwave generation devices, hydrocarbon wells that include the shockwave generation devices, and methods of utilizing the same
US-10196886-B2 · Feb 5, 2019 · US
Explosive assembly and method
US-10184331-B2 · Jan 22, 2019 · US
Pressure bulkhead structure with integrated selective electronic switch circuitry, pressure-isolating enclosure containing such selective electronic switch circuitry, and methods of making such
US-10161733-B2 · Dec 25, 2018 · US
Compact Electrically Actuated Chemical Energy Heat Source for Downhole Devices
US-2018334873-A1 · Nov 22, 2018 · US
Radio frequency igniter
US-10107607-B1 · Oct 23, 2018 · US
Pressure bulkhead structure with integrated selective electronic switch circuitry, pressure-isolating enclosure containing such selective electronic switch circuitry, and methods of making such
US-2018299239-A1 · Oct 18, 2018 · US
Wireless initiation device
US-2018231361-A1 · Aug 16, 2018 · US
Methods of igniting devices
US-2018195846-A1 · Jul 12, 2018 · US
Detonator control system
US-2018120073-A1 · May 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F42D1/045?
- CPC F42D1/045 is the Cooperative Patent Classification code for “Arrangements for electric ignition (dynamo-electric generators H02K).”
- How many patents are filed under CPC F42D1/045 (Arrangements for electric ignition (dynamo-electric generators H02K))?
- Our database includes 188 publications tagged with this CPC code.
- Is patent activity under CPC F42D1/045 growing?
- Publication counts under this code: 20 in 2024 vs 21 in 2025 (latest complete years).