Inventor · disambiguated record

Helmut Prestel

Also filed as: PRESTEL HELMUT

3 granted patents·50 citations·filing 1989–1991

72Inventor score

Technology areasC07D

Files withCIBA GEIGY CORP3

Top patents by PatentIndex Score

3 records

0184US4999433AProcess for the preparation of benzotriazole derivativesCIBA GEIGY CORP·Filed 1989·Granted Mar 12, 1991·20 cites·18 claims
0276US5276161AProcess for the preparation of benzotriazolesCIBA GEIGY CORP·Filed 1990·Granted Jan 4, 1994·18 cites·15 claims
0368US5086173AProcess for the preparation of alkylhydroxyanilinothiotriazine derivativesCIBA GEIGY CORP·Filed 1991·Granted Feb 4, 1992·12 cites·13 claims

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