Enhanced cement bond and micro-annulus detection and analysis
US-2020300077-A1 · Sep 24, 2020 · US
by measuring mechanical or acoustic impedance
by measuring mechanical or acoustic impedance · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01N29/09 |
| Official title | by measuring mechanical or acoustic impedance |
| Display label | by measuring mechanical or acoustic impedance |
| Total patents | 116 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 10 |
| 2017 | 10 |
| 2018 | 9 |
| 2019 | 12 |
| 2020 | 9 |
| 2021 | 6 |
| 2022 | 11 |
| 2023 | 10 |
| 2024 | 12 |
| 2025 | 10 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for tagging and acoustically characterizing containers
US-10766027-B2 · Sep 8, 2020 · US
Systems and methods for tagging and acoustically characterizing containers
US-2020188902-A1 · Jun 18, 2020 · US
Method for nondestructive testing of joint between wire and electrical terminal
US-2020080973-A1 · Mar 12, 2020 · US
Control valve monitoring system
US-10550959-B2 · Feb 4, 2020 · US
Process for the preparation of polycrystalline silicon
US-10400329-B2 · Sep 3, 2019 · US
Impedance tube and sample holder
US-10345140-B1 · Jul 9, 2019 · US
Acoustic impact particle size measurement
US-10309887-B2 · Jun 4, 2019 · US
Control valve monitoring system
US-2019145544-A1 · May 16, 2019 · US
Acoustic wave acquisition apparatus and method for controlling the same
US-10281436-B2 · May 7, 2019 · US
Validation of cased-hole acoustic tools
US-10241086-B2 · Mar 26, 2019 · US
Method and assembly for inspecting a partially cured repair patch prior to installation
US-10222353-B2 · Mar 5, 2019 · US
Surface property measurement method, surface property measurement apparatus, and recording medium
US-2019059857-A1 · Feb 28, 2019 · US
Methods, systems and computer program products for multi-resolution imaging and analysis
US-10194889-B2 · Feb 5, 2019 · US
Device and method for testing impedance characteristic and expansion performance of sound absorption material
US-10197438-B2 · Feb 5, 2019 · US
Control valve monitoring system
US-10197185-B2 · Feb 5, 2019 · US
Signal processing system and methods
US-10168302-B2 · Jan 1, 2019 · US
Methods, systems and computer program products for single track location shear wave elasticity imaging
US-2018296189-A1 · Oct 18, 2018 · US
Downhole sensor system
US-2018274353-A1 · Sep 27, 2018 · US
Automated ultrasonic inspection of adhesively-bonded joints and inspection method therefor
US-2018231502-A1 · Aug 16, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01N29/09?
- CPC G01N29/09 is the Cooperative Patent Classification code for “by measuring mechanical or acoustic impedance.”
- How many patents are filed under CPC G01N29/09 (by measuring mechanical or acoustic impedance)?
- Our database includes 116 publications tagged with this CPC code.
- Is patent activity under CPC G01N29/09 growing?
- Publication counts under this code: 12 in 2024 vs 10 in 2025 (latest complete years).