Inventor

SHIMOYAMA YOSHIFUMI

JP3 patents

Patents

3 patents

US4743301AMay 10, 1988

Concrete composition for underwater use

TAKENAKA KOMUTEN CO12 citations70

US4508572AApr 2, 1985

Cement composition for laying underwater

TAKENAKA KOMUTEN CO12 citations70

US4487633ADec 11, 1984

Water-inseparable concrete composition

TAKENAKA KOMUTEN CO5 citations59