Total heat energy recovery system for furnace-process phosphoric acid
US-12398039-B2 · Aug 26, 2025 · US
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Feed-water heaters, i.e. economisers or like preheaters
Feed-water heaters, i.e. economisers or like preheaters · 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 | F22D1/00 |
| Official title | Feed-water heaters, i.e. economisers or like preheaters |
| Display label | Feed-water heaters, i.e. economisers or like preheaters |
| Total patents | 13 |
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 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Total Heat Energy Recovery System For Furnace-Process Phosphoric Acid
US-2022281747-A1 · Sep 8, 2022 · US
All-condition auxiliary denitration system and operation method thereof
US-10960353-B2 · Mar 30, 2021 · US
All-condition auxiliary denitration system and operation method thereof
US-2021016224-A1 · Jan 21, 2021 · US
Thermal energy recovery device and startup operation method for the same
US-10851678-B2 · Dec 1, 2020 · US
Thermal energy recovery device and startup operation method for the same
US-2019383177-A1 · Dec 19, 2019 · US
Boiler, combined cycle plant, and steam cooling method for boiler
US-10227900-B2 · Mar 12, 2019 · US
Method for operating a solar thermal power system with an economizer recirculation line
US-9995285-B2 · Jun 12, 2018 · US
Solar Thermal Power System
US-2017284378-A1 · Oct 5, 2017 · US
Boiler, combined cycle plant, and steam cooling method for boiler
US-2017211427-A1 · Jul 27, 2017 · US
Recovery system using fluid coupling on power generating system
US-2015377075-A1 · Dec 31, 2015 · US
Recovery system using fluid coupling on power generating system
US-9188027-B2 · Nov 17, 2015 · US
Solar thermal power system
US-2015240792-A1 · Aug 27, 2015 · US