Rubbing position identification device and rubbing position identification method for rotating machine
US-12560472-B2 · Feb 24, 2026 · US
Subtraction
Subtraction · 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 | F05D2200/12 |
| Official title | Subtraction |
| Display label | Subtraction |
| Total patents | 33 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 5 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 3 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Turbomachinery engines with high-speed low-pressure turbines
US-2026028947-A1 · Jan 29, 2026 · US
Turbomachinery engines with high-speed low-pressure turbines
US-2026002492-A1 · Jan 1, 2026 · US
Turbomachinery engines with high-speed low-pressure turbines
US-2026002491-A1 · Jan 1, 2026 · US
Gas turbine engine with acoustic spacing of the fan blades and outlet guide vanes
US-12510104-B2 · Dec 30, 2025 · US
Gas turbine engine with acoustic spacing of the fan blades and outlet guide vanes
US-2025382974-A1 · Dec 18, 2025 · US
Gas turbine engine
US-2025215823-A1 · Jul 3, 2025 · US
Rubbing position identification device and rubbing position identification method for rotating machine
US-2024192047-A1 · Jun 13, 2024 · US
Gas turbine engine with third stream
US-11859516-B2 · Jan 2, 2024 · US
Combustion adjustment method and combustion control device of gas turbine
US-2023392789-A1 · Dec 7, 2023 · US
Adaptive boosting algorithm-based turbofan engine direct data-driven control method
US-11788473-B2 · Oct 17, 2023 · US
Method for operating a pump
US-11698084-B2 · Jul 11, 2023 · US
Gas turbine engine with third stream
US-2023076976-A1 · Mar 9, 2023 · US
Gas turbine engine with third stream
US-11492918-B1 · Nov 8, 2022 · US
Fuel supply control device
US-11352959-B2 · Jun 7, 2022 · US
Speed limiting for power turbine governing and protection in a turboshaft engine
US-11346290-B2 · May 31, 2022 · US
Adaptive boosting algorithm-based turbofan engine direct data-driven control method
US-2021348567-A1 · Nov 11, 2021 · US
Method for operating a pump
US-2021332830-A1 · Oct 28, 2021 · US
System and method for estimation of gas fuel lower heating value using energy balances and parametric error modeling
US-11131251-B2 · Sep 28, 2021 · US
Speed limiting for power turbine governing and protection in a turboshaft engine
US-2021262400-A1 · Aug 26, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F05D2200/12?
- CPC F05D2200/12 is the Cooperative Patent Classification code for “Subtraction.”
- How many patents are filed under CPC F05D2200/12 (Subtraction)?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC F05D2200/12 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).