Inventor
KUMASAKA SADAO
JP13 patents
⚠️ This page may combine multiple inventors who share the name “KUMASAKA SADAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYO RUBBER CHEMICAL IND CO
7 patentsUS4463951AAug 7, 1984
Ball
TOYO RUBBER CHEMICAL IND CO101 citations94
US4520141AMay 28, 1985
Method for manufacturing phenolic resin foam
TOYO RUBBER CHEMICAL IND CO6 citations72
US4596684AJun 24, 1986
Method for manufacturing low density rubber foamed body
TOYO RUBBER CHEMICAL IND CO17 citations71
US4325688AApr 20, 1982
Mold equipment
TOYO RUBBER CHEMICAL IND CO7 citations71
US4517312AMay 14, 1985
Process for regenerating resin
TOYO RUBBER CHEMICAL IND CO13 citations69
US4338271AJul 6, 1982
Method for manufacturing a low density synthetic resin body
TOYO RUBBER CHEMICAL IND CO16 citations68
US4352651AOct 5, 1982
Mold equipment
TOYO RUBBER CHEMICAL IND CO5 citations60
HUMAN IND CORP
5 patentsUS4666393AMay 19, 1987
Apparatus for manufacturing polyurethane foam slabs in a batch
HUMAN IND CORP33 citations89
US4988271AJan 29, 1991
Apparatus for producing polyurethane foam
HUMAN IND CORP19 citations70
US4814515AMar 21, 1989
Method of manufacturing a modified polyhydroxy compound
HUMAN IND CORP2 citations61
US4610922ASep 9, 1986
Asphalt impregnated foam and method of producing the same
HUMAN IND CORP3 citations60
US5079276AJan 7, 1992
Method of manufacturing polyurethane foam
HUMAN IND CORP6 citations57