Diffuser for thermal storage tank
US-2026036334-A1 · Feb 5, 2026 · US
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Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating · 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 | F24H1/22 |
| Official title | Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating |
| Display label | Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2017 | 4 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Diffuser for thermal storage tank
US-12467658-B2 · Nov 11, 2025 · US
Systems and methods for intelligently controlling a hybrid cascade boiler system
US-11739971-B2 · Aug 29, 2023 · US
Tank-based and tankless water heater systems
US-11629884-B2 · Apr 18, 2023 · US
Systems and methods for intelligently controlling a hybrid cascade boiler system
US-2022260273-A1 · Aug 18, 2022 · US
Diffuser for thermal storage tank
US-2022146146-A1 · May 12, 2022 · US
Systems and methods for intelligently controlling a hybrid cascade boiler system
US-11326802-B2 · May 10, 2022 · US
Systems and methods for intelligently controlling a hybrid cascade boiler system
US-2022065486-A1 · Mar 3, 2022 · US
Heat source device
US-11118811-B2 · Sep 14, 2021 · US
Tank-Based and Tankless Water Heater Systems
US-2020224927-A1 · Jul 16, 2020 · US
Heat source device
US-2020191436-A1 · Jun 18, 2020 · US
Tank-based and tankless water heater systems
US-10605486-B2 · Mar 31, 2020 · US
Waste heat recovery device, heat supply system, and operation method for waste heat recovery device
US-10408164-B2 · Sep 10, 2019 · US
Tank-Based and Tankless Water Heater Systems
US-2019170398-A1 · Jun 6, 2019 · US
Combined heating system capable of bi-directional heating
US-10309660-B2 · Jun 4, 2019 · US
Waste Heat Recovery Device, Heat Supply System, and Operation Method for Waste Heat Recovery Device
US-2017370324-A1 · Dec 28, 2017 · US
Combustion apparatus
US-9777919-B2 · Oct 3, 2017 · US
Combined heating system capable of bi-directional heating
US-9746190-B2 · Aug 29, 2017 · US
Boiler unit
US-9732982-B2 · Aug 15, 2017 · US
Combustion apparatus
US-2015316254-A1 · Nov 5, 2015 · US