Assignee
SEIBU POLYMER KASEI KK
JP·11 granted patents·231 citations·filing 1974–1997
Top patents by PatentIndex Score
11 records- 0180US4221502ACulvert jointSEIBU POLYMER KASEI KK·Filed 1979·Granted Sep 9, 1980·42 cites·16 claims
- 0279US4824516APavement-marking tape applicatorSEIBU POLYMER KASEI KK·Filed 1986·Granted Apr 25, 1989·35 cites·9 claims
- 0376US4025674AReflex light reflecting sheetSEIBU POLYMER KASEI KK·Filed 1975·Granted May 24, 1977·40 cites·10 claims
- 0470US4653854ACellular reflex-reflecting sheetingSEIBU POLYMER KASEI KK·Filed 1985·Granted Mar 31, 1987·33 cites·14 claims
- 0569US3994086AReflex light reflectorSEIBU POLYMER KASEI KK·Filed 1974·Granted Nov 30, 1976·20 cites·9 claims
- 0668US4921754AHigh-durability pavement marking sheet materialSEIBU POLYMER KASEI KK·Filed 1985·Granted May 1, 1990·23 cites·3 claims
- 0754US4751140AHigh-brightness pavement marking sheet materialSEIBU POLYMER KASEI KK·Filed 1985·Granted Jun 14, 1988·16 cites·3 claims
- 0836US4027902AJoint for culvert sections and the likeSEIBU POLYMER KASEI KK·Filed 1976·Granted Jun 7, 1977·9 cites·8 claims
- 0927US5794987AFlexible joint for a culvertSEIBU POLYMER KASEI KK·Filed 1997·Granted Aug 18, 1998·6 cites·3 claims
- 1026US5704657AFlexible joint for a culvertSEIBU POLYMER KASEI KK·Filed 1995·Granted Jan 6, 1998·6 cites·2 claims
- 1122US5879032AFlexible joint for a culvertSEIBU POLYMER KASEI KK·Filed 1997·Granted Mar 9, 1999·1 cites·2 claims
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