Isao Shimizu
1Patents
0Active
1Granted
23Portfolio score
Filing activity: Apr 23, 1992 → Apr 23, 1992
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5291012A | High resolution optical microscope and irradiation spot beam-forming mask | Physics | 21 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.