Method of producing molten iron using electric furnace including video device
US-12566029-B2 · Mar 3, 2026 · US
Ram or pusher apparatus · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F27D3/04 |
| Official title | Ram or pusher apparatus |
| Display label | Ram or pusher apparatus |
| Total patents | 14 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 3 |
| 2021 | 1 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12566029-B2 · Mar 3, 2026 · US
US-2025003684-A1 · Jan 2, 2025 · US
US-2024085110-A1 · Mar 14, 2024 · US
US-2024034663-A1 · Feb 1, 2024 · US
US-11136646-B2 · Oct 5, 2021 · US
US-2019218642-A1 · Jul 18, 2019 · US
US-10287651-B2 · May 14, 2019 · US
US-10260814-B2 · Apr 16, 2019 · US
US-10101090-B2 · Oct 16, 2018 · US
US-2018162656-A1 · Jun 14, 2018 · US
US-2018017330-A1 · Jan 18, 2018 · US
US-9557109-B2 · Jan 31, 2017 · US
US-2017023304-A1 · Jan 26, 2017 · US
US-2016069615-A1 · Mar 10, 2016 · US