Inventor · disambiguated record
Sadao Kumasaka
Also filed as: KUMASAKA SADAO
13 granted patents·233 citations·filing 1980–1989
92Inventor score
Top patents by PatentIndex Score
13 records- 0192US4463951ABallTOYO RUBBER CHEMICAL IND CO·Filed 1982·Granted Aug 7, 1984·101 cites·5 claims
- 0271US4666393AApparatus for manufacturing polyurethane foam slabs in a batchHUMAN IND CORP·Filed 1986·Granted May 19, 1987·33 cites·3 claims
- 0358US4338271AMethod for manufacturing a low density synthetic resin bodyTOYO RUBBER CHEMICAL IND CO·Filed 1980·Granted Jul 6, 1982·16 cites·14 claims
- 0455US4988271AApparatus for producing polyurethane foamHUMAN IND CORP·Filed 1987·Granted Jan 29, 1991·19 cites·2 claims
- 0555US4517312AProcess for regenerating resinTOYO RUBBER CHEMICAL IND CO·Filed 1983·Granted May 14, 1985·13 cites·3 claims
- 0654US4596684AMethod for manufacturing low density rubber foamed bodyTOYO RUBBER CHEMICAL IND CO·Filed 1983·Granted Jun 24, 1986·17 cites·17 claims
- 0742US4520141AMethod for manufacturing phenolic resin foamTOYO RUBBER CHEMICAL IND CO·Filed 1982·Granted May 28, 1985·6 cites·18 claims
- 0835US4325688AMold equipmentTOYO RUBBER CHEMICAL IND CO·Filed 1980·Granted Apr 20, 1982·7 cites·15 claims
- 0934US5079276AMethod of manufacturing polyurethane foamHUMAN IND CORP·Filed 1989·Granted Jan 7, 1992·6 cites·18 claims
- 1034US4814515AMethod of manufacturing a modified polyhydroxy compoundHUMAN IND CORP·Filed 1987·Granted Mar 21, 1989·2 cites·10 claims
- 1132US4610922AAsphalt impregnated foam and method of producing the sameHUMAN IND CORP·Filed 1985·Granted Sep 9, 1986·3 cites·9 claims
- 1232US4352651AMold equipmentTOYO RUBBER CHEMICAL IND CO·Filed 1980·Granted Oct 5, 1982·5 cites·5 claims
- 1331US4810298AManufacturing method of asphalt foamTOYO CHEMICAL INDUSTRY CO LTD·Filed 1987·Granted Mar 7, 1989·5 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →