Frederick Cassidy
26Patents
7h-index
13Co-inventors
62Inventor score
Filing activity: Oct 15, 1976 → Jun 1, 1992
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4831050A | Pyrrolidinyl benzopyrans as hypotensive agents | Human Necessities | 76 | Expired |
| US5254557A | Compound and treatment | Chemistry; Metallurgy | 28 | Expired |
| US4571406A | Anti-hypertensive chromans and chromenes | Chemistry; Metallurgy | 20 | Expired |
| US4575511A | Anti-hypertensive chromanol derivatives | Human Necessities | 19 | Expired |
| US4782083A | 3,4-dihydro-2H-1-benzopyrans useful as anti-hypertensive agents | Chemistry; Metallurgy | 18 | Expired |
| US4631282A | Antihypertensive chromans and chromenes | Chemistry; Metallurgy | 17 | Expired |
| US4812459A | Anti-hypertensive pyranopyridine compounds | Chemistry; Metallurgy | 10 | Expired |
| US4943582A | Active compounds | Chemistry; Metallurgy | 7 | Expired |
| US5210234A | Benzopyran intermediates | Chemistry; Metallurgy | 7 | Expired |
| US4904784A | Active compounds | Chemistry; Metallurgy | 5 | Expired |
| US4299970A | Oxy-alkylamino carboxylic esters | Chemistry; Metallurgy | 5 | Expired |
| US4294972A | 1,2-Disubstituted oxo triazolidine | Chemistry; Metallurgy | 5 | Expired |
| US4262008A | 2,4-Disubstituted 5-oxo-5H-hexahydrofuro[3,2b]pyrroles | Chemistry; Metallurgy | 3 | Expired |
| US4138407A | 2,4 Pyrrolidinediones | Chemistry; Metallurgy | 3 | Expired |
| US4156730A | Pharmaceutically active compounds, preparation thereof, intermediates useful in such preparation and compositions containing the compounds | Chemistry; Metallurgy | 2 | Expired |
| US4136190A | 4,4-Dimethyl-3,5-pyrrolidinediones | Chemistry; Metallurgy | 2 | Expired |
| US4987138A | Active compounds | Chemistry; Metallurgy | 2 | Expired |
| US4201864A | Oxy-alkylamino acids and esters | Chemistry; Metallurgy | 1 | Expired |
| US4187312A | 3-Hydroxy-4,4-dimethyl-5-pyrrolidone derivatives | Chemistry; Metallurgy | 1 | Expired |
| US4241074A | Prostaglandin analogues | Chemistry; Metallurgy | 1 | Expired |
| US4177283A | Aromatic prostaglandin analogues | Chemistry; Metallurgy | 1 | Expired |
| US4272445A | Process for preparing active compounds | Chemistry; Metallurgy | 0 | Expired |
| US5075460A | Epoxybenzopyrans | Chemistry; Metallurgy | 0 | Expired |
| US4341789A | Cycloaliphatic prostaglandin analogues | Chemistry; Metallurgy | 0 | Expired |
| US4341708A | Prostacyclin aza analogue intermediates | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.