Darrell E. O'Brien
3Patents
3h-index
4Co-inventors
33Inventor score
Filing activity: May 22, 1975 → Jan 28, 1976
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4021556A | Xanthine oxidase inhibitors | Human Necessities | 26 | Expired |
| US4036840A | 2-Substituted-s-triazolo[1,5a]pyrimidines | Chemistry; Metallurgy | 22 | Expired |
| US4093617A | 3,5,7-Trisubstituted pyrazolo[1,5-a]pyrimidines | Chemistry; Metallurgy | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.