Inventor · disambiguated record
Jun-Ichi Umeda
Also filed as: SHIGE NORIYUKI · UMEDA JUN-ICHI
12 granted patents·326 citations·filing 1977–1988
93Inventor score
Top patents by PatentIndex Score
12 records- 0195US4503540APhase-locked semiconductor laser deviceHITACHI LTD·Filed 1982·Granted Mar 5, 1985·58 cites·4 claims
- 0294US4337443ASemiconductor laser device with facet passivation filmHITACHI LTD·Filed 1980·Granted Jun 29, 1982·53 cites·9 claims
- 0388US4176325ASemiconductor laser deviceHITACHI LTD·Filed 1977·Granted Nov 27, 1979·34 cites·22 claims
- 0486US4369513ASemiconductor laser deviceHITACHI LTD·Filed 1980·Granted Jan 18, 1983·32 cites·6 claims
- 0583US4326176ASemiconductor laser deviceHITACHI LTD·Filed 1977·Granted Apr 20, 1982·27 cites·37 claims
- 0682US5031172AUnit and disc having a relatively rough surface and method of producingHITACHI MAXELL·Filed 1988·Granted Jul 9, 1991·27 cites·27 claims
- 0782US4257011ASemiconductor laser deviceHITACHI LTD·Filed 1978·Granted Mar 17, 1981·24 cites·30 claims
- 0876US4432091ASemiconductor laser deviceHITACHI LTD·Filed 1982·Granted Feb 14, 1984·20 cites·3 claims
- 0969US4288757ASemiconductor laser deviceHITACHI LTD·Filed 1979·Granted Sep 8, 1981·17 cites·6 claims
- 1064US4509173APhase-locked semiconductor laser deviceHITACHI LTD·Filed 1982·Granted Apr 2, 1985·14 cites·12 claims
- 1161US4404678ASemiconductor laser deviceHITACHI LTD·Filed 1982·Granted Sep 13, 1983·13 cites·10 claims
- 1244US4426703ASemiconductor laser deviceHITACHI LTD·Filed 1981·Granted Jan 17, 1984·7 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →