Inventor · disambiguated record
Nagayoshi Hirano
Also filed as: HIRANO NAGAYOSHI
6 granted patents·56 citations·filing 1975–1994
82Inventor score
Technology areasG02B
Files withFUJI PHOTO OPTICAL CO LTD6
Top patents by PatentIndex Score
6 records- 0157US3951524AProjection lens system for motion picture projectorFUJI PHOTO OPTICAL CO LTD·Filed 1975·Granted Apr 20, 1976·16 cites·5 claims
- 0256US4149774AZoom lens systemFUJI PHOTO OPTICAL CO LTD·Filed 1977·Granted Apr 17, 1979·14 cites·5 claims
- 0342US4953958AVariable magnification duplicator lens systemFUJI PHOTO OPTICAL CO LTD·Filed 1988·Granted Sep 4, 1990·10 cites·5 claims
- 0442US4514049AZoom lens system for finite conjugate distancesFUJI PHOTO OPTICAL CO LTD·Filed 1983·Granted Apr 30, 1985·9 cites·2 claims
- 0531US5526082AAutomatic visibility regulator for a camera viewfinderFUJI PHOTO OPTICAL CO LTD·Filed 1994·Granted Jun 11, 1996·5 cites·18 claims
- 0620US4907865AVariable magnification duplicator lens systemFUJI PHOTO OPTICAL CO LTD·Filed 1988·Granted Mar 13, 1990·2 cites·7 claims
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