Systems and Methods for Detection of Phases and Phase Transitions in Some Materials
US-2026079123-A1 · Mar 19, 2026 · US
of critical point; of other phase change
of critical point; of other phase change · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01N25/12 |
| Official title | of critical point; of other phase change |
| Display label | of critical point; of other phase change |
| Total patents | 46 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 5 |
| 2021 | 5 |
| 2022 | 5 |
| 2023 | 10 |
| 2024 | 2 |
| 2025 | 8 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Liquid fluid systems including phase detection sensors for turbine engines
US-12571327-B2 · Mar 10, 2026 · US
Open-air, variable-temperature x-ray diffractometer
US-2025377319-A1 · Dec 11, 2025 · US
System for determination of a quantity of emissions of carbon dioxide resulting from the heating of an electrical conductor of an electrical cable by the Joule effect
US-2025321198-A1 · Oct 16, 2025 · US
Systeme de determination d'une quantite d'emissions de dioxyde de carbone resultant de l'echauffement d'un conducteur electrique d'un cable electrique par effet joule
US-2025264429-A1 · Aug 21, 2025 · US
Liquid fluid systems including phase detection sensors for turbine engines
US-2025207509-A1 · Jun 26, 2025 · US
Device and method for detecting curie temperature of permanent magnet material
US-2025123226-A1 · Apr 17, 2025 · US
Liquid fluid systems including phase detection sensors for turbine engines
US-12264588-B2 · Apr 1, 2025 · US
Cold filter plugging point prediction using spectroscopy
US-2025067665-A1 · Feb 27, 2025 · US
Determining Molecules to Implement in Refrigeration Systems
US-2025046400-A1 · Feb 6, 2025 · US
Methods and systems for determining phase state or subcooling state
US-11933528-B2 · Mar 19, 2024 · US
Sensor assembly
US-11927378-B2 · Mar 12, 2024 · US
Method for predicting gasification reaction characteristics of biomass char
US-2023419073-A1 · Dec 28, 2023 · US
High pressure high temperature direct fluid injection to gas chromatography in a PVT system
US-11852616-B2 · Dec 26, 2023 · US
Real time integrity monitoring of on-shore pipes
US-2023324010-A1 · Oct 12, 2023 · US
Liquid fluid systems for turbine engines
US-2023279784-A1 · Sep 7, 2023 · US
Real time integrity monitoring of on-shore pipes
US-11680685-B2 · Jun 20, 2023 · US
Method for calibrating internal temperature field of amorphous alloy prepared by spark plasma sintering
US-11673192-B2 · Jun 13, 2023 · US
Sensor assembly
US-2023175750-A1 · Jun 8, 2023 · US
Methods and systems for determining phase state or subcooling state
US-2023168014-A1 · Jun 1, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01N25/12?
- CPC G01N25/12 is the Cooperative Patent Classification code for “of critical point; of other phase change.”
- How many patents are filed under CPC G01N25/12 (of critical point; of other phase change)?
- Our database includes 46 publications tagged with this CPC code.
- Is patent activity under CPC G01N25/12 growing?
- Publication counts under this code: 2 in 2024 vs 8 in 2025 (latest complete years).