Opening maching apparatus for heat transfer tube, method of forming opening in tube wall of heat transfer tube using same, and method of removing foreign material through same opening of same heat transfer tube
US-12485462-B2 · Dec 2, 2025 · US
This page is not indexed by search engines while we improve data quality.
Washing-out devices
Washing-out devices · 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 | F22B37/52 |
| Official title | Washing-out devices |
| Display label | Washing-out devices |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sludge lance for cleaning a steam generator
US-2025251202-A1 · Aug 7, 2025 · US
Apparatus and method of removing foreign substances from steam generator
US-12345412-B2 · Jul 1, 2025 · US
Method of pre-operational cleaning of water and steam systems in combined cycle power plants and combined cycle power plant arranged therefor
US-2025188848-A1 · Jun 12, 2025 · US
Electric steam generating device
US-2024247798-A1 · Jul 25, 2024 · US
Seawater leakage detection device in feedwater system, method for detecting seawater leakage in feedwater system, and steam turbine plant
US-11802688-B2 · Oct 31, 2023 · US
Apparatus and method of removing foreign substances from steam generator
US-2023138837-A1 · May 4, 2023 · US
Flexible lance for machining or inspecting a tubesheet of a boiler
US-11060718-B2 · Jul 13, 2021 · US
Seawater leakage detection device in feedwater system, method for detecting seawater leakage in feedwater system, and steam turbine plant
US-2020256218-A1 · Aug 13, 2020 · US
Scale remover in steam generating facility
US-10703659-B2 · Jul 7, 2020 · US
Method for removing scale and scale remover in steam generating facility
US-10384966-B2 · Aug 20, 2019 · US
Deoxidizing agent for boilers and method for deoxidizing boiler water system
US-2019144314-A1 · May 16, 2019 · US
Flexible lance for machining or inspecting a tubesheet of a boiler
US-2018347807-A1 · Dec 6, 2018 · US
Injection device and steam turbine system
US-10107491-B2 · Oct 23, 2018 · US
Scale remover in steam generating facility
US-2018215637-A1 · Aug 2, 2018 · US
Method for removing scales in steam generation facility
US-9834462-B2 · Dec 5, 2017 · US
Controlling cooling flow in a sootblower based on lance tube temperature
US-9671183-B2 · Jun 6, 2017 · US
Injection device and steam turbine system
US-2017130955-A1 · May 11, 2017 · US
Method for removing scale and scale remover in steam generating facility
US-2017050873-A1 · Feb 23, 2017 · US
Method for completing a chemical power plant cleaning
US-9302300-B2 · Apr 5, 2016 · US