Ichiya Hayakawa
1Patents
0Active
1Granted
20Portfolio score
Filing activity: Mar 21, 1991 → Mar 21, 1991
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5249094A | Pulsed-DC ionizer | Electricity | 20 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.