Method for destruction-free determination of the depth of hardening on surface-hardened components
US-2024027402-A1 · Jan 25, 2024 · US
by amplitude comparison
by amplitude comparison · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01N29/48 |
| Official title | by amplitude comparison |
| Display label | by amplitude comparison |
| Total patents | 250 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 6 |
| 2017 | 13 |
| 2018 | 19 |
| 2019 | 32 |
| 2020 | 40 |
| 2021 | 28 |
| 2022 | 28 |
| 2023 | 26 |
| 2024 | 22 |
| 2025 | 22 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Multielement method and device for testing parts with ultrasound
US-2019360969-A1 · Nov 28, 2019 · US
Refrigerator and controlling method thereof
US-10488098-B2 · Nov 26, 2019 · US
Defect detection method and defect detection device
US-10429172-B2 · Oct 1, 2019 · US
Inspection device and inspection method
US-2019283995-A1 · Sep 19, 2019 · US
Machine fault prediction based on analysis of periodic information in a signal
US-10416126-B2 · Sep 17, 2019 · US
Acoustic profile recognition for discriminating between hazardous emissions and non-hazardous emissions
US-2019277809-A1 · Sep 12, 2019 · US
System and method for detecting structural damage in a component
US-10408798-B2 · Sep 10, 2019 · US
Leak detection system and method of making and using the same
US-2019162625-A1 · May 30, 2019 · US
Acoustic profile recognition for discriminating between hazardous emissions and non-hazardous emissions
US-10302597-B2 · May 28, 2019 · US
Method for testing a structural component of a vehicle
US-10267771-B2 · Apr 23, 2019 · US
Resonant modes in sprays
US-10227890-B2 · Mar 12, 2019 · US
Determination of characteristics of electrochemical systems using acoustic signals
US-2019072614-A1 · Mar 7, 2019 · US
Method and device for monitoring state of charge and state of health of lithium-ion battery
US-2019049518-A1 · Feb 14, 2019 · US
Acoustic inspection apparatus, audio signal acquisition apparatus, acoustic inspection system, and acoustic inspection method
US-2019017973-A1 · Jan 17, 2019 · US
Peak analysis of ultrasonic waveforms for cement bond logging
US-10180511-B2 · Jan 15, 2019 · US
Inspection device, inspection method, and non-transitory recoding medium storing inspection program
US-2019011402-A1 · Jan 10, 2019 · US
Diagnosis device for joint of sheet metal and method of diagnosing defect of joint of sheet metal using the same
US-10161911-B2 · Dec 25, 2018 · US
Resin pelletizer device and cavitation monitoring method
US-10160153-B2 · Dec 25, 2018 · US
Defect detection method and defect detection device
US-2018356205-A1 · Dec 13, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01N29/48?
- CPC G01N29/48 is the Cooperative Patent Classification code for “by amplitude comparison.”
- How many patents are filed under CPC G01N29/48 (by amplitude comparison)?
- Our database includes 250 publications tagged with this CPC code.
- Is patent activity under CPC G01N29/48 growing?
- Publication counts under this code: 22 in 2024 vs 22 in 2025 (latest complete years).