Inventor · disambiguated record
Masahisa Okawa
Also filed as: OKAWA MASAHISA · SASAKI TOSHIO · SHIGA AKINOBU
11 granted patents·77 citations·filing 1977–1988
89Inventor score
Files withSUMITOMO CHEMICAL CO11
Top patents by PatentIndex Score
11 records- 0171US4235984AProcess for producing highly stereoregular α-olefin polymersSUMITOMO CHEMICAL CO·Filed 1979·Granted Nov 25, 1980·13 cites·9 claims
- 0267US4279776ACatalyst systemSUMITOMO CHEMICAL CO·Filed 1980·Granted Jul 21, 1981·14 cites·9 claims
- 0358US4364851AProcess for producing olefin polymersSUMITOMO CHEMICAL CO·Filed 1980·Granted Dec 21, 1982·12 cites·12 claims
- 0457US4165298ACatalysts for the polymerization of olefinsSUMITOMO CHEMICAL CO·Filed 1977·Granted Aug 21, 1979·12 cites·34 claims
- 0553US4485035AProcess for producing highly stereoregular α-olefin polymersSUMITOMO CHEMICAL CO·Filed 1980·Granted Nov 27, 1984·9 cites·26 claims
- 0645US4246135AOlefin polymerization catalystSUMITOMO CHEMICAL CO·Filed 1979·Granted Jan 20, 1981·4 cites·15 claims
- 0741US4183824ACatalysts for the polymerization of olefinsSUMITOMO CHEMICAL CO·Filed 1978·Granted Jan 15, 1980·4 cites·34 claims
- 0837US5026889ACatalyst system for olefin polymerization and method for production of olefin polymers by using the sameSUMITOMO CHEMICAL CO·Filed 1988·Granted Jun 25, 1991·3 cites·1 claims
- 0935US4748210AVinyl chloride-grafted ethylene copolymer and process for producing sameSUMITOMO CHEMICAL CO·Filed 1987·Granted May 31, 1988·3 cites·11 claims
- 1035US4304892AOlefin polymerization catalystSUMITOMO CHEMICAL CO·Filed 1980·Granted Dec 8, 1981·2 cites·17 claims
- 1133US4243786ACatalysts for the polymerization of olefinsSUMITOMO CHEMICAL CO·Filed 1979·Granted Jan 6, 1981·1 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →