System and Methods for Methane Number Generation
US-2018372709-A1 · Dec 27, 2018 · US
Gas in oils, e.g. hydrogen in insulating oils
Gas in oils, e.g. hydrogen in insulating oils · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01N33/2841 |
| Official title | {Gas in oils, e.g. hydrogen in insulating oils} |
| Display label | Gas in oils, e.g. hydrogen in insulating oils |
| Total patents | 211 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 19 |
| 2017 | 17 |
| 2018 | 18 |
| 2019 | 17 |
| 2020 | 18 |
| 2021 | 19 |
| 2022 | 19 |
| 2023 | 22 |
| 2024 | 25 |
| 2025 | 25 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Devices and methods for measuring analyte concentration
US-10137423-B2 · Nov 27, 2018 · US
Multiphase flow meters and related methods having asymmetrical flow therethrough
US-2018274730-A1 · Sep 27, 2018 · US
Dissolved gas analysis devices, systems, and methods
US-2018259451-A1 · Sep 13, 2018 · US
Systems and methods of calibrating integrated computational elements
US-10031074-B2 · Jul 24, 2018 · US
Optical sensors for downhole tools and related systems and methods
US-10025000-B2 · Jul 17, 2018 · US
Trace gas measurement apparatus for electrical equipment
US-10024836-B2 · Jul 17, 2018 · US
Gas analysis
US-2018180588-A1 · Jun 28, 2018 · US
Process comprising analysing a flowing fluid
US-2018143177-A1 · May 24, 2018 · US
Diagnosis method for internal fault of oil-immersed electric apparatus
US-2018143176-A1 · May 24, 2018 · US
Hydrogen sensor element for measuring concentration of hydrogen gas dissolved in liquid and method for measuring concentration of hydrogen gas using same
US-9977006-B2 · May 22, 2018 · US
Bi-Directional Oil-Flow Adapter for Attaching to a Valve-Controlled Port of a Transformer
US-2018059087-A1 · Mar 1, 2018 · US
Trace gas measurement apparatus for electrical equipment
US-9874497-B2 · Jan 23, 2018 · US
Liquid treatment method and liquid treatment apparatus for treating a liquid with plasma
US-9855356-B2 · Jan 2, 2018 · US
Method and device for dissolved gas analysis
US-9846148-B2 · Dec 19, 2017 · US
Internal transformer composite-defect fuzzy diagnostic method based on gas dissolved in oil
US-2017336461-A1 · Nov 23, 2017 · US
Predictive Modeling to Estimate Data Values Between Sampling Events
US-2017269055-A1 · Sep 21, 2017 · US
Hydrogen sensor having a protection layer
US-2017261485-A1 · Sep 14, 2017 · US
Measuring rod for verification of a flowing medium in a tube and respective measuring arrangements
US-2017248570-A1 · Aug 31, 2017 · US
Optical sensors for downhole tools and related systems and methods
US-2017212272-A1 · Jul 27, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01N33/2841?
- CPC G01N33/2841 is the Cooperative Patent Classification code for “Gas in oils, e.g. hydrogen in insulating oils.”
- How many patents are filed under CPC G01N33/2841 (Gas in oils, e.g. hydrogen in insulating oils)?
- Our database includes 211 publications tagged with this CPC code.
- Is patent activity under CPC G01N33/2841 growing?
- Publication counts under this code: 25 in 2024 vs 25 in 2025 (latest complete years).