Instron Limited
23Patents
0Active
23Granted
28Portfolio score
Filing activity: Jul 18, 1974 → Apr 24, 2006
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5616857A | Penetration hardness tester | Physics | 29 | Expired |
| US5511431A | Structure testing machine | Physics | 26 | Expired |
| US6247356A | Hardness tester | Physics | 26 | Expired |
| US4721000A | Axial loading material testing | Physics | 23 | Expired |
| US6142010A | Penetration hardness tester | Physics | 21 | Expired |
| US6508132B1 | Dynamic load cell apparatus | Physics | 18 | Expired |
| US4160325A | Extensometer | Emerging Cross-Sectional Technologies | 17 | Expired |
| USD394015S | Hardness tester | General | 14 | Expired |
| US4194402A | Testing machine grip | Physics | 11 | Expired |
| US5606515A | Sensor conditioning circuitry for use with electrically excited transducers | Physics | 10 | Expired |
| US4823473A | Extensometer for material testing machine | Physics | 9 | Expired |
| US5329820A | Materials testing grip | Physics | 5 | Expired |
| US6099223A | Adjustable wedge washer | Emerging Cross-Sectional Technologies | 4 | Expired |
| USD351804S | Stress:strain materials testing instrument | General | 4 | Expired |
| US7047819B2 | Testing of samples | Physics | 4 | Expired |
| US3943342A | Coarse and fine electronic ramp function generator | Electricity | 3 | Expired |
| US5413306A | Test frame | Physics | 3 | Expired |
| US5454174A | Position setting device and securing arrangement for an extensometer | Physics | 2 | Expired |
| US5567866A | Side load tester | Physics | 2 | Expired |
| USRE36392E | Test frame | General | 1 | Expired |
| US7610815B2 | Testing of samples | Physics | 1 | Expired |
| US7004017B1 | Materials tester latching coupling device | Physics | 1 | Expired |
| US5440934A | Test apparatus limit switch assembly | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.