System and method for warmkeeping sub-critical steam generator
US-11927344-B2 · Mar 12, 2024 · US
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for direct heat transfer, e.g. by mixing water and steam
for direct heat transfer, e.g. by mixing water and steam · 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 | F22D1/28 |
| Official title | for direct heat transfer, e.g. by mixing water and steam |
| Display label | for direct heat transfer, e.g. by mixing water and steam |
| Total patents | 12 |
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 | 1 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 3 |
| 2020 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of efficiency enhancement of fired heaters without air preheat systems
US-11802687-B2 · Oct 31, 2023 · US
System and method for warmkeeping sub-critical steam generator
US-2023204206-A1 · Jun 29, 2023 · US
Method of efficiency enhancement of fired heaters without air preheat systems
US-2022252254-A1 · Aug 11, 2022 · US
Spray nozzle and deaerator
US-10859258-B2 · Dec 8, 2020 · US
Drain recovery device
US-10094554-B2 · Oct 9, 2018 · US
Spray nozzle and deaerator
US-2018245789-A1 · Aug 30, 2018 · US
Preheating of untreated water in power plants
US-2018016947-A1 · Jan 18, 2018 · US
Economizer water recirculation system for boiler exit gas temperature control in supercritical pressure boilers
US-9696027-B2 · Jul 4, 2017 · US
Drain recovery device
US-2017074505-A1 · Mar 16, 2017 · US
Closed drain recovery system
US-9500360-B2 · Nov 22, 2016 · US
Closed Drain Recovery System
US-2015027384-A1 · Jan 29, 2015 · US