Inventor · disambiguated record
Michio Tokunaga
Also filed as: TOKUNAGA MICHIO
12 granted patents·129 citations·filing 1975–1982
91Inventor score
Top patents by PatentIndex Score
12 records- 0183US4015143ASemiconductor switchHITACHI LTD·Filed 1975·Granted Mar 29, 1977·20 cites·9 claims
- 0281US4125787ASemiconductor switch circuitHITACHI LTD·Filed 1977·Granted Nov 14, 1978·20 cites·8 claims
- 0379US4039863ALight activated semiconductor switch deviceHITACHI LTD·Filed 1975·Granted Aug 2, 1977·17 cites·22 claims
- 0472US4465967ACurrent supply circuitHITACHI LTD·Filed 1982·Granted Aug 14, 1984·22 cites·8 claims
- 0566US4058741ASemiconductor switch circuitHITACHI LTD·Filed 1976·Granted Nov 15, 1977·9 cites·7 claims
- 0664US4039865ASemiconductor switchHITACHI LTD·Filed 1975·Granted Aug 2, 1977·10 cites·15 claims
- 0759US4041332ASemiconductor switch deviceHITACHI LTD·Filed 1975·Granted Aug 9, 1977·8 cites·11 claims
- 0858US4039864ASemiconductor bidirectional switch circuitHITACHI LTD·Filed 1976·Granted Aug 2, 1977·8 cites·15 claims
- 0951US4112346AConstant current circuitHITACHI LTD·Filed 1977·Granted Sep 5, 1978·8 cites·7 claims
- 1042US4277696ASemiconductor switch circuitHITACHI LTD·Filed 1979·Granted Jul 7, 1981·4 cites·8 claims
- 1140US4232234ASemiconductor switch circuitHITACHI LTD·Filed 1977·Granted Nov 4, 1980·3 cites·4 claims
- 1227US4315206ACurrent supply circuit for telephone exchangeNIPPON TELEGRAPH & TELEPHONE·Filed 1979·Granted Feb 9, 1982·0 cites·33 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →