Inventor · disambiguated record
Masakazu Hirota
Also filed as: HIROTA MASAKAZU
2 granted patents·5 citations·filing 1976–2017
47Inventor score
Top patents by PatentIndex Score
2 records- 0166US10959615B2Eye-fatigue examining device and eye-fatigue examining methodUNIV OSAKA·Filed 2017·Granted Mar 30, 2021·1 cites·16 claims
- 0235US4040240AMethod and apparatus for doubling and twisting a yarn by a two-step changeover systemTORAY INDUSTRIES·Filed 1976·Granted Aug 9, 1977·4 cites·21 claims
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