Inventor · disambiguated record
Junichi Umeda
Also filed as: UMEDA JUNICHI
3 granted patents·57 citations·filing 1975–1980
72Inventor score
Files withHITACHI LTD3
Top patents by PatentIndex Score
3 records- 0184US4178604ASemiconductor laser deviceHITACHI LTD·Filed 1977·Granted Dec 11, 1979·29 cites·102 claims
- 0270US4361887ASemiconductor light emitting elementHITACHI LTD·Filed 1980·Granted Nov 30, 1982·18 cites·9 claims
- 0345US4073676AGaAs-GaAlAs semiconductor having a periodic corrugation at an interfaceHITACHI LTD·Filed 1975·Granted Feb 14, 1978·10 cites·9 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →