Vacuum-based leak detection
US-12480832-B2 · Nov 25, 2025 · US
by testing the possibility of maintaining the vacuum in containers, e.g. in can-testing machines
by testing the possibility of maintaining the vacuum in containers, e.g. in can-testing machines · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01M3/34 |
| Official title | by testing the possibility of maintaining the vacuum in containers, e.g. in can-testing machines |
| Display label | by testing the possibility of maintaining the vacuum in containers, e.g. in can-testing machines |
| Total patents | 56 |
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 | 7 |
| 2017 | 8 |
| 2018 | 2 |
| 2019 | 6 |
| 2020 | 6 |
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 8 |
| 2024 | 1 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Leak detection in a viscous flow
US-2025130133-A1 · Apr 24, 2025 · US
Vacuum-helium-leak-detection method based on carbon-nanotube-based field-emission sensor
US-12276576-B2 · Apr 15, 2025 · US
Low power memristive vacuum sensor
US-12216026-B2 · Feb 4, 2025 · US
Method and hardware for post maintenance vacuum recovery system
US-12072267-B2 · Aug 27, 2024 · US
Balancing of a rotationally symmetrical component, particularly a rotor component
US-11821332-B2 · Nov 21, 2023 · US
Pin hole inspection apparatus and method
US-11815429-B2 · Nov 14, 2023 · US
Pin hole inspection apparatus and method
US-2023314270-A1 · Oct 5, 2023 · US
Die casting machine and airtight inspection method
US-2023286039-A1 · Sep 14, 2023 · US
Vacuum-helium-leak-detection method based on carbon-nanotube-based field-emission sensor
US-2023213407-A1 · Jul 6, 2023 · US
Management system for vacuum heat insulating body
US-2023204164-A1 · Jun 29, 2023 · US
Method and device for balancing
US-11656143-B2 · May 23, 2023 · US
Vacuum-Based Leak Detection
US-2023139875-A1 · May 4, 2023 · US
Low power memristive vacuum sensor
US-2022412836-A1 · Dec 29, 2022 · US
Method of assessing damage to composite members
US-11402291-B2 · Aug 2, 2022 · US
Method and hardware for post maintenance vacuum recovery system
US-2022065735-A1 · Mar 3, 2022 · US
Enhanced rig check and leak detection of aircraft doors
US-11067468-B2 · Jul 20, 2021 · US
Device and method for checking pouches for filling lines
US-11067471-B2 · Jul 20, 2021 · US
Internal combustion engine for a motor vehicle
US-11035264-B2 · Jun 15, 2021 · US
Test fixture and method of liquid leak testing an electronic device
US-10996135-B1 · May 4, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01M3/34?
- CPC G01M3/34 is the Cooperative Patent Classification code for “by testing the possibility of maintaining the vacuum in containers, e.g. in can-testing machines.”
- How many patents are filed under CPC G01M3/34 (by testing the possibility of maintaining the vacuum in containers, e.g. in can-testing machines)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC G01M3/34 growing?
- Publication counts under this code: 1 in 2024 vs 4 in 2025 (latest complete years).