Inventor · disambiguated record
Hiroyuki Kumamaru
Also filed as: KUMAMARU HIROYUKI
1 granted patent·40 citations·filing 1975–1975
47Inventor score
Technology areasG02B
Files withSUMITOMO ELECTRIC INDUSTRIES1
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1 recordIdentity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →