Inventor · disambiguated record

Masahisa Ohkawa

Also filed as: OHKAWA MASAHISA · SHIGA AKINOBU

2 granted patents·17 citations·filing 1977–1978

54Inventor score

Technology areasC08F

Files withSUMITOMO CHEMICAL CO2

Top patents by PatentIndex Score

2 records

0170US4123387ACatalysts for polymerization of olefinsSUMITOMO CHEMICAL CO·Filed 1977·Granted Oct 31, 1978·16 cites·22 claims
0230US4217432AProcess for the polymerization of olefinsSUMITOMO CHEMICAL CO·Filed 1978·Granted Aug 12, 1980·1 cites·11 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →