Inventor

ICHIZUKA ISAMU

JP3 patents

Patents

3 patents

US5193960AMar 16, 1993

Washer with elastic water-swellable rubber

ASAHI DENKA KOGYO KK34 citations90

US5476718ADec 19, 1995

Compound water-sealing sealant

ASAHI DENKA KOGYO KK27 citations86

US5444128AAug 22, 1995

Water-sealing sheet

ASAHI DENKA KOGYO KK6 citations57