Inventor · disambiguated record

Kazuyoshi Kuroishi

Also filed as: KUROISHI KAZUYOSHI

4 granted patents·49 citations·filing 1987–1990

76Inventor score

Technology areasC08G

Files withHITACHI LTD4

Top patents by PatentIndex Score

4 records

0169US4742089ARigid polyurethane foam and process for producing the sameHITACHI LTD·Filed 1987·Granted May 3, 1988·18 cites·14 claims
0267US5173517ARigid polyurethane foam and heat insulator obtained therefromHITACHI LTD·Filed 1990·Granted Dec 22, 1992·17 cites·26 claims
0356US5034425ARigid polyurethane foam, process for producing the same, and heat insulators and refrigerators using such polyurethane foamHITACHI LTD·Filed 1989·Granted Jul 23, 1991·10 cites·11 claims
0437US5216040ARigid polyurethane foam and process for producing the sameHITACHI LTD·Filed 1990·Granted Jun 1, 1993·4 cites·9 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →