Inventor · disambiguated record
Tooru Koyama
Also filed as: KOYAMA TOORU
2 granted patents·4 citations·filing 1989–1991
45Inventor score
Technology areasG03F
Files withMITSUBISHI ELECTRIC CORP2
Top patents by PatentIndex Score
2 records- 0133US4933257APositive quinone diazide photo-resist composition with antistatic agentMITSUBISHI ELECTRIC CORP·Filed 1989·Granted Jun 12, 1990·3 cites·2 claims
- 0229US5168030APositive type o-quinone diazide photo-resist containing antistatic agent selected from hydrazones, ethylcarbazole and bis(dimethylamino)benzeneMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Dec 1, 1992·1 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when Tooru Koyama files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →