Inventor · disambiguated record
Sumio Kawakami
Also filed as: KAWAKAMI SUMIO
3 granted patents·109 citations·filing 1975–1991
75Inventor score
Files withHITACHI LTD3
Top patents by PatentIndex Score
3 records- 0178US5177568ATunnel injection semiconductor devices with schottky barriersHITACHI LTD·Filed 1991·Granted Jan 5, 1993·48 cites·4 claims
- 0269US4083062AAvalanche photodiode with reduced avalanche breakdown voltageHITACHI LTD·Filed 1977·Granted Apr 4, 1978·35 cites·21 claims
- 0362US4079405ASemiconductor photodetectorHITACHI LTD·Filed 1975·Granted Mar 14, 1978·26 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →