Inventor
FUKUSHIMA TAKUO
JP6 patents
⚠️ This page may combine multiple inventors who share the name “FUKUSHIMA TAKUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ASAHI DENKA KOGYO KK
5 patentsUS5193960AMar 16, 1993
Washer with elastic water-swellable rubber
ASAHI DENKA KOGYO KK34 citations90
US5044835ASep 3, 1991
Expansion joint for use in constructing concrete structures
ASAHI DENKA KOGYO KK20 citations79
US4816509AMar 28, 1989
Water swellable sealant
ASAHI DENKA KOGYO KK9 citations70
US4905429AMar 6, 1990
Device for filling up of recess left in concrete wall after removal
ASAHI DENKA KOGYO KK14 citations65
US4889312ADec 26, 1989
Waterstop for concrete form separator
ASAHI DENKA KOGYO KK3 citations51