Inventor · disambiguated record
Toshiro Ishiyama
Also filed as: ISHIYAMA TOSHIRO
9 granted patents·304 citations·filing 1993–2003
90Inventor score
Files withNIKON CORP9
Top patents by PatentIndex Score
9 records- 0188US5694241ACatadioptric reduction projection optical system and exposure apparatus employing the sameNIKON CORP·Filed 1995·Granted Dec 2, 1997·92 cites·22 claims
- 0286US5592329ACatadioptric optical systemNIKON CORP·Filed 1994·Granted Jan 7, 1997·74 cites·12 claims
- 0382US5668673ACatadioptric reduction projection optical systemNIKON CORP·Filed 1995·Granted Sep 16, 1997·62 cites·28 claims
- 0466US5321554AInverse telescopic wide angle lensNIKON CORP·Filed 1993·Granted Jun 14, 1994·28 cites·13 claims
- 0556US5771125ACatadioptric system for photolithographyNIKON CORP·Filed 1997·Granted Jun 23, 1998·17 cites·20 claims
- 0649US5477388AInverse telescopic wide angle lensNIKON CORP·Filed 1994·Granted Dec 19, 1995·14 cites·17 claims
- 0744US5321553AZoom lensNIKON CORP·Filed 1993·Granted Jun 14, 1994·11 cites·7 claims
- 0841US5434425AOptical position detecting apparatusNIKON CORP·Filed 1993·Granted Jul 18, 1995·6 cites·6 claims
- 0937US7154585B2Projection optical system, exposure apparatus, and device production methodNIKON CORP·Filed 2003·Granted Dec 26, 2006·0 cites·46 claims
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