Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857830 | Method for measuring insulation resistance of electric line | — | 1989-08-15 |
| 4857855 | Method for compensating for phase of insulation resistance measuring circuit | — | 1989-08-15 |
| 4851761 | Method for measuring insulation resistance of electric line | — | 1989-07-25 |
| 4638242 | Method and device for measuring insulation deterioration of electric line | — | 1987-01-20 |
| 4422034 | Method for measuring insulation resistance and device therefor | Yosio Nomura | 1983-12-20 |