Inventor · disambiguated record
Hiroji Shoyama
Also filed as: SHINKAWA KEIRO · SHOYAMA HIROJI
3 granted patents·53 citations·filing 1977–1978
72Inventor score
Files withHITACHI LTD3
Top patents by PatentIndex Score
3 records- 0175US4219779ASelf-oscillating mixer circuitHITACHI LTD·Filed 1978·Granted Aug 26, 1980·23 cites·6 claims
- 0270US4187476ASHF band oscillator circuit using FETHITACHI LTD·Filed 1978·Granted Feb 5, 1980·19 cites·5 claims
- 0355US4211977AMixer circuit arrangementHITACHI LTD·Filed 1977·Granted Jul 8, 1980·11 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →