FUKUDA CO., LTD.
11Patents
8Active
11Granted
42Portfolio score
Filing activity: Apr 19, 1989 → Dec 20, 2021 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8205484B2 | Apparatus and method for leak testing | Physics | 27 | Active |
| US4993256A | Leakage test method and apparatus | Physics | 26 | Expired |
| US5868188A | Method, system and apparatus for safely cutting a workpiece on an inverted router table | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5967209A | Method, system and apparatus for safely cutting a workpiece on an inverted router table | Emerging Cross-Sectional Technologies | 5 | Expired |
| US9857264B2 | Leak testing apparatus and method | Physics | 2 | Active |
| US12264949B2 | Gas flow estimation method, hole diameter estimation method, gas flow rate estimation device, and hole diameter estimation device | Physics | 0 | Active |
| US12253436B2 | Method for leak testing | Physics | 0 | Active |
| US10816434B2 | Apparatus and method for leak testing | Physics | 0 | Active |
| US11248984B2 | Method for leak testing and reference leak device for leak testing | Physics | 0 | Active |
| US11860065B2 | Method for leak testing and reference leak device for leak testing | Physics | 0 | Active |
| US11408795B2 | Sealability evaluation method and the like and standard artificial leak device | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.