System and method for treating wastewater from an oilfield well with co-production of power
US-2026055009-A1 · Feb 26, 2026 · US
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incorporating thermal de-aeration of feed-water (de-aeration produced in the course of direct heat transfer F22D1/28)
incorporating thermal de-aeration of feed-water (de-aeration produced in the course of direct heat transfer F22D1/28) · 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 | F22D1/50 |
| Official title | incorporating thermal de-aeration of feed-water (de-aeration produced in the course of direct heat transfer F22D1/28) |
| Display label | incorporating thermal de-aeration of feed-water (de-aeration produced in the course of direct heat transfer F22D1/28) |
| Total patents | 18 |
Filing trend
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 | 1 |
| 2018 | 2 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 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-12398039-B2 · Aug 26, 2025 · US
System and method for warmkeeping sub-critical steam generator
US-11927344-B2 · Mar 12, 2024 · US
System and method for warmkeeping sub-critical steam generator
US-2023204206-A1 · Jun 29, 2023 · US
Total Heat Energy Recovery System For Furnace-Process Phosphoric Acid
US-2022281747-A1 · Sep 8, 2022 · US
Solar aided coal-fired power generation system participating in primary frequency regulation and control method thereof
US-11236633-B2 · Feb 1, 2022 · US
Solar aided coal-fired power generation system participating in primary frequency regulation and control method thereof
US-2021310365-A1 · Oct 7, 2021 · US
Condensate and feedwater system of steam power plant and operation method for the same
US-10982567-B2 · Apr 20, 2021 · US
Steam-Producing Process and System
US-2021071861-A1 · Mar 11, 2021 · US
Power plant and power output increase controlling method for power plant
US-10941677-B2 · Mar 9, 2021 · US
Spray nozzle and deaerator
US-10859258-B2 · Dec 8, 2020 · US
Power Plant and Power Output Increase Controlling Method for Power Plant
US-2020308991-A1 · Oct 1, 2020 · US
Condensate and Feedwater System of Steam Power Plant and Operation Method for the Same
US-2020271019-A1 · Aug 27, 2020 · US
Deaerator
US-10605533-B2 · Mar 31, 2020 · US
Spray nozzle and deaerator
US-2018245789-A1 · Aug 30, 2018 · US
Method for preheating feed water in steam power plants, with process steam outcoupling
US-9890948-B2 · Feb 13, 2018 · US
Deaerator
US-2017059251-A1 · Mar 2, 2017 · US
Method for preheating feed water in steam power plants, with process steam outcoupling
US-2016138798-A1 · May 19, 2016 · US