Steam utilization system of factory producing concrete pipe pile
US-12485577-B2 · Dec 2, 2025 · US
for returning condensate to boiler
for returning condensate to boiler · 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 | F22D11/06 |
| Official title | for returning condensate to boiler |
| Display label | for returning condensate to boiler |
| Total patents | 26 |
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 | 4 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Energy-saving system using electric heat pump to deeply recover flue gas waste heat from heat power plant for district heating
US-11821637-B2 · Nov 21, 2023 · US
Steam utilization system of factory producting concrete pipe pile
US-2023264387-A1 · Aug 24, 2023 · US
Method for driving machines in an ethylene plant steam generation circuit, and integrated ethylene and power plant system
US-2022356818-A1 · Nov 10, 2022 · US
Combined cooling, heating and power system
US-11466594-B2 · Oct 11, 2022 · US
Segregated steam system and process in a hydrogen production facility
US-11391457-B2 · Jul 19, 2022 · US
Silencer
US-11315537-B2 · Apr 26, 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
Energy-saving system using electric heat pump to deeply recover flue gas waste heat from heat power plant for district heating
US-2021239326-A1 · Aug 5, 2021 · US
Steam-Producing Process and System
US-2021071861-A1 · Mar 11, 2021 · US
Segregated Steam System and Process in a Hydrogen Production Facility
US-2021033275-A1 · Feb 4, 2021 · US
Cooking appliance
US-10871291-B2 · Dec 22, 2020 · US
Steam turbine plant
US-10787934-B2 · Sep 29, 2020 · US
Silencer
US-2020066244-A1 · Feb 27, 2020 · US
Cooking appliance
US-2019316783-A1 · Oct 17, 2019 · US
Combined cooling, heating and power system
US-2019277164-A1 · Sep 12, 2019 · US
Steam turbine plant
US-2019145285-A1 · May 16, 2019 · US
Systems and methods for providing override control for a feedwater pump recirculation valve
US-10094370-B2 · Oct 9, 2018 · US
Drain recovery device
US-10094554-B2 · Oct 9, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F22D11/06?
- CPC F22D11/06 is the Cooperative Patent Classification code for “for returning condensate to boiler.”
- How many patents are filed under CPC F22D11/06 (for returning condensate to boiler)?
- Our database includes 26 publications tagged with this CPC code.
- Is patent activity under CPC F22D11/06 growing?
- Publication counts under this code: 2 in 2023 vs 1 in 2025 (latest complete years).