Detection system and detection method
US-12247951-B2 · Mar 11, 2025 · US
Change of phase or condition
Change of phase or condition · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01N2291/025 |
| Official title | Change of phase or condition |
| Display label | Change of phase or condition |
| Total patents | 43 |
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 | 2 |
| 2016 | 1 |
| 2017 | 5 |
| 2018 | 1 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 6 |
| 2022 | 4 |
| 2023 | 7 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for acoustic monitoring of trayed distillation columns
US-2025035591-A1 · Jan 30, 2025 · US
Non-invasive monitoring of a mixing process in a container
US-12115509-B2 · Oct 15, 2024 · US
Image forming apparatus that detects status of transport belt that transports recording medium
US-12011917-B2 · Jun 18, 2024 · US
Method for detecting failure of vehicle, system, vehicle, electronic device, and storage medium
US-2024029485-A1 · Jan 25, 2024 · US
System for measuring an inhomogeneity of a medium
US-11860128-B2 · Jan 2, 2024 · US
Resonant acoustic rheometry for characterization of soft viscoelastic materials
US-2023228715-A1 · Jul 20, 2023 · US
Evaluating and exchanging batteries
US-11686709-B2 · Jun 27, 2023 · US
Apparatus and method for testing combined dynamic-static loading strength of rock-like material
US-11644398-B1 · May 9, 2023 · US
Apparatus and method for testing combined dynamic-static loading strength of rock-like material
US-2023137003-A1 · May 4, 2023 · US
Image forming apparatus that detects status of transport belt that transports recording medium
US-2023132842-A1 · May 4, 2023 · US
Ultrasound transmitting and receiving device and computer readable medium storing ultrasound transmitting and receiving program
US-2023082314-A1 · Mar 16, 2023 · US
Ultrasound transmitting and receiving device and computer readable medium storing ultrasound transmitting and receiving program
US-11592288-B1 · Feb 28, 2023 · US
Self-propelled inspection device and equipment inspection system
US-2022397908-A1 · Dec 15, 2022 · US
Evaluating and exchanging batteries
US-2022299478-A1 · Sep 22, 2022 · US
Detection system and detection method
US-2022120716-A1 · Apr 21, 2022 · US
Detection system and detection method
US-11249052-B2 · Feb 15, 2022 · US
Non-invasive monitoring of a mixing process in a container
US-2021205772-A1 · Jul 8, 2021 · US
System and method for monitoring a change over time of a physical medium using ultrasonic wave sensing elements embedded therein
US-2021140924-A1 · May 13, 2021 · US
System for measuring an inhomogeneity of a medium
US-2021140927-A1 · May 13, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01N2291/025?
- CPC G01N2291/025 is the Cooperative Patent Classification code for “Change of phase or condition.”
- How many patents are filed under CPC G01N2291/025 (Change of phase or condition)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC G01N2291/025 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).