Inventor · disambiguated record
Sei Matsui
Also filed as: MATSUI SEI
10 granted patents·204 citations·filing 1976–1997
89Inventor score
Top patents by PatentIndex Score
10 records- 0195US4338001ATelephoto lens systemNIPPON KOGAKU KK·Filed 1980·Granted Jul 6, 1982·126 cites·5 claims
- 0262US5831775ALong focal length microlens systemNIKON CORP·Filed 1996·Granted Nov 3, 1998·26 cites·20 claims
- 0347US4118722AOptical system for indication in the viewfinder of single-lens reflex cameraNIPPON KOGAKU KK·Filed 1976·Granted Oct 3, 1978·3 cites·1 claims
- 0446US5825546A"Macro" Photographic lens having long focal length and vibration compensationNIKON CORP·Filed 1997·Granted Oct 20, 1998·13 cites·13 claims
- 0544US4139265AModified gauss type photographic lensNIPPON KOGAKU KK·Filed 1977·Granted Feb 13, 1979·9 cites·4 claims
- 0642US4099850AWide angle photographic lensNIPPON KOGAKU KK·Filed 1977·Granted Jul 11, 1978·8 cites·6 claims
- 0741US4062630ATelephoto lens systemNIPPON KOGAKU KK·Filed 1976·Granted Dec 13, 1977·7 cites·8 claims
- 0838US4162498AViewfinder for reflex cameraNIPPON KOGAKU KK·Filed 1977·Granted Jul 24, 1979·1 cites·8 claims
- 0937US5909319ALong focal length macrolens systemNIKON CORP·Filed 1997·Granted Jun 1, 1999·7 cites·14 claims
- 1033US4303314ACompact telephoto lensNIPPON KOGAKU KK·Filed 1980·Granted Dec 1, 1981·4 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →