Inventor

OHWADA TAKEO

JP3 patents

Patents

3 patents

US5109088AApr 28, 1992

Resin composition for cement

HITACHI CHEMICAL CO LTD11 citations70

US4923929AMay 8, 1990

Process for producing graft copolymer

HITACHI CHEMICAL CO LTD5 citations70

US5075404ADec 24, 1991

Concrete-protective material

HITACHI CHEMICAL CO LTD1 citations49