Inventor · disambiguated record
Masakatsu Ohta
Also filed as: OHTA MASAKATSU
8 granted patents·1 pending application·421 citations·filing 1985–2005
89Inventor score
Top patents by PatentIndex Score
9 records- 0196US4988188AIllumination deviceCANON KK·Filed 1988·Granted Jan 29, 1991·140 cites·13 claims
- 0292US5148214AAlignment and exposure apparatusCANON KK·Filed 1991·Granted Sep 15, 1992·80 cites·34 claims
- 0390US4786947AProjection exposure apparatusCANON KK·Filed 1987·Granted Nov 22, 1988·115 cites·8 claims
- 0484US4998821AProjection apparatusCANON KK·Filed 1988·Granted Mar 12, 1991·39 cites·10 claims
- 0579US4683524AIllumination apparatusCANON KK·Filed 1986·Granted Jul 28, 1987·31 cites·8 claims
- 0657US4887957ANozzle for melt spinning of pitch and method for spinning pitchIDEMITSU KOSAN CO·Filed 1988·Granted Dec 19, 1989·10 cites·15 claims
- 0748US7005081B2Base material cutting method, base material cutting apparatus, ingot cutting method, ingot cutting apparatus and wafer producing methodCANON KK·Filed 2002·Granted Feb 28, 2006·1 cites·5 claims
- 0848US2006027531A1Base material cutting method, base material cutting apparatus, ingot cutting method, ingot cutting apparatus and wafer producing methodKAWASE NOBUO·Filed 2005·Application pending·0 cites
- 0940US4608150APitch material for carbonaceous body and a method for the preparation thereofIDEMITSU KOSAN CO·Filed 1985·Granted Aug 26, 1986·5 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →