Inventor · disambiguated record
Darrell E. O'Brien
Also filed as: O'BRIEN DARRELL E
3 granted patents·106 citations·filing 1975–1976
76Inventor score
Files withICN PHARMACEUTICALS3
Top patents by PatentIndex Score
3 records- 0194US4036840A2-Substituted-s-triazolo[1,5a]pyrimidinesICN PHARMACEUTICALS·Filed 1975·Granted Jul 19, 1977·45 cites·12 claims
- 0292US4093617A3,5,7-Trisubstituted pyrazolo[1,5-a]pyrimidinesICN PHARMACEUTICALS·Filed 1976·Granted Jun 6, 1978·27 cites·8 claims
- 0379US4021556AXanthine oxidase inhibitorsICN PHARMACEUTICALS·Filed 1975·Granted May 3, 1977·34 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →