Inventor · disambiguated record
Yasumasa Hayashida
Also filed as: HAYASHIDA YASUMASA
4 granted patents·46 citations·filing 1985–1989
76Inventor score
Files withASAHI DENKA KOGYO KK4
Top patents by PatentIndex Score
4 records- 0152US5044835AExpansion joint for use in constructing concrete structuresASAHI DENKA KOGYO KK·Filed 1989·Granted Sep 3, 1991·20 cites·16 claims
- 0250US4816509AWater swellable sealantASAHI DENKA KOGYO KK·Filed 1985·Granted Mar 28, 1989·9 cites·22 claims
- 0342US4905429ADevice for filling up of recess left in concrete wall after removalASAHI DENKA KOGYO KK·Filed 1987·Granted Mar 6, 1990·14 cites·3 claims
- 0420US4889312AWaterstop for concrete form separatorASAHI DENKA KOGYO KK·Filed 1987·Granted Dec 26, 1989·3 cites·6 claims
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