Inventor · disambiguated record
Ulfert Elle Wiersum
Also filed as: WIERSUM ULFERT E · WIERSUM ULFERT ELLE
8 granted patents·74 citations·filing 1974–1996
85Inventor score
Top patents by PatentIndex Score
8 records- 0187US3948858APolymerization of ethylenically unsaturated compoundsAKZO NV·Filed 1974·Granted Apr 6, 1976·33 cites·6 claims
- 0261US5588083ANon-linear optically active polycarbonateAKZO NOBEL NV·Filed 1994·Granted Dec 24, 1996·13 cites·13 claims
- 0347US4351935AThermosetting coating composition containing a blocked acid catalystAKZO NV·Filed 1981·Granted Sep 28, 1982·8 cites·10 claims
- 0443US5688896ANon-linear optically active polycarbonateAKZO NOBEL NV·Filed 1996·Granted Nov 18, 1997·8 cites·10 claims
- 0540US4049726AFire retardant compoundsAKZONA INC·Filed 1974·Granted Sep 20, 1977·2 cites·4 claims
- 0639US4374938AProcess for the degradation of polymersAKZONA INC·Filed 1981·Granted Feb 22, 1983·4 cites·18 claims
- 0736US5872882ANon-linear optical polycarbonatesAKZO NOBEL NV·Filed 1996·Granted Feb 16, 1999·6 cites·11 claims
- 0829US3984452AProcess for the preparation of a p,p'-dicyanobibenzyl and a m,m'-dicyanobibenzylAKZONA INC·Filed 1975·Granted Oct 5, 1976·0 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →