Air heating apparatus
US-12241641-B2 · Mar 4, 2025 · US
This page is not indexed by search engines while we improve data quality.
Central heating systems employing combinations of heat transfer fluids covered by two or more of groups F24D1/00 - F24D7/00 (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00)
Central heating systems employing combinations of heat transfer fluids covered by two or more of groups F24D1/00 - F24D7/00 (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00) · 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 | F24D9/00 |
| Official title | Central heating systems employing combinations of heat transfer fluids covered by two or more of groups F24D1/00 - F24D7/00 (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00) |
| Display label | Central heating systems employing combinations of heat transfer fluids covered by two or more of groups F24D1/00 - F24D7/00 (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00) |
| Total patents | 10 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2022 | 4 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Automatically switching a combi radiator
US-2024133562-A1 · Apr 25, 2024 · US
Methods and systems for thermal energy storage and their use in buildings applications
US-11480395-B2 · Oct 25, 2022 · US
Air heating apparatus
US-2022178553-A1 · Jun 9, 2022 · US
Air heating apparatus
US-2022178554-A1 · Jun 9, 2022 · US
Methods and systems for thermal energy storage and their use in buildings applications
US-2022034598-A1 · Feb 3, 2022 · US
Combined space conditioning or heating and water heating system
US-10012396-B2 · Jul 3, 2018 · US
Rooftop hydronic heating unit
US-9683748-B2 · Jun 20, 2017 · US
Method of controlling a variable delivery pump fitted to a heating system
US-8978748-B2 · Mar 17, 2015 · US
Method of controlling a variable delivery pump fitted to a heating system
US-2015013961-A1 · Jan 15, 2015 · US