Air heating apparatus
US-2026071828-A1 · Mar 12, 2026 · US
This page is not indexed by search engines while we improve data quality.
The tubes containing an electrically heated intermediate fluid, e.g. water
The tubes containing an electrically heated intermediate fluid, e.g. water · 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 | F24H3/085 |
| Official title | {The tubes containing an electrically heated intermediate fluid, e.g. water} |
| Display label | The tubes containing an electrically heated intermediate fluid, e.g. water |
| Total patents | 16 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 1 |
| 2022 | 3 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Device for heating room air and a liquid
US-2025237409-A1 · Jul 24, 2025 · US
Air heating apparatus
US-12241641-B2 · Mar 4, 2025 · US
A device for heating room air and a liquid
US-2024384894-A1 · Nov 21, 2024 · US
Air heating apparatus
US-2022178553-A1 · Jun 9, 2022 · US
Air heating apparatus
US-2022178623-A1 · Jun 9, 2022 · US
Air heating apparatus
US-2022178554-A1 · Jun 9, 2022 · US
Fluid-heating device
US-10773568-B2 · Sep 15, 2020 · US
Electric heater device
US-2019309991-A1 · Oct 10, 2019 · US
Electric heater device
US-2019313483-A1 · Oct 10, 2019 · US
Layered heat exchanger and heat medium heating apparatus
US-10352631-B2 · Jul 16, 2019 · US
Heating-medium heating unit and vehicle air conditioner using the same
US-10024575-B2 · Jul 17, 2018 · US
Fluid-heating device
US-2018186215-A1 · Jul 5, 2018 · US
Heat medium heating unit and vehicle air conditioning apparatus provided with the same
US-9186956-B2 · Nov 17, 2015 · US
Heating-medium heating unit and vehicle air conditioner using the same
US-2015076133-A1 · Mar 19, 2015 · US
Heat medium heating device and vehicle air conditioner including the same
US-8948582-B2 · Feb 3, 2015 · US