David E. Edgren
59Patents
31h-index
50Co-inventors
91Inventor score
Filing activity: Oct 14, 1980 → May 29, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6245357A | Extended release dosage form | Human Necessities | 329 | Expired |
| US4326525A | Osmotic device that improves delivery properties of agent in situ | Human Necessities | 271 | Expired |
| US6120803A | Prolonged release active agent dosage form adapted for gastric retention | Human Necessities | 255 | Expired |
| US5024842A | Annealed coats | Human Necessities | 162 | Expired |
| US6797283B1 | Gastric retention dosage form having multiple layers | Emerging Cross-Sectional Technologies | 148 | Expired |
| US5128145A | Dosage form for Parkinson's disease, spasticity and muscle spasms | Human Necessities | 140 | Expired |
| US4519801A | Osmotic device with wall comprising cellulose ether and permeability enhancer | Human Necessities | 136 | Expired |
| US4917895A | Transdermal drug delivery device | Human Necessities | 120 | Expired |
| US6210712A | Dosage form having first and second coats | Human Necessities | 113 | Expired |
| US5057321A | Dosage form comprising drug and maltodextrin | Human Necessities | 113 | Expired |
| US5190763A | Dosage form indicated for the management of abnormal posture, tremor and involuntary movement | Human Necessities | 109 | Expired |
| US4871548A | Controlled release dosage form comprising different cellulose ethers | Human Necessities | 101 | Expired |
| US6342249B1 | Controlled release liquid active agent formulation dosage forms | Human Necessities | 101 | Expired |
| US5160743A | Annealed composition for pharmaceutically acceptable drug | Human Necessities | 89 | Expired |
| US4915954A | Dosage form for delivering a drug at two different rates | Human Necessities | 84 | Expired |
| US5192550A | Dosage form for treating central nervous system disorders | Human Necessities | 83 | Expired |
| US4946685A | Cellulosic dosage form | Human Necessities | 82 | Expired |
| US4931285A | Aqueous based pharmaceutical coating composition for dosage forms | Human Necessities | 78 | Expired |
| US6635281B2 | Gastric retaining oral liquid dosage form | Human Necessities | 76 | Expired |
| US5200194A | Oral osmotic device | Human Necessities | 71 | Expired |
| US4814181A | Dosage form comprising fast agent delivery followed by slow agent delivery | Human Necessities | 68 | Expired |
| US6217905A | Antiparkinson dosage form | Human Necessities | 67 | Expired |
| US5006346A | Delivery system | Human Necessities | 66 | Expired |
| US5221536A | Dosage form indicated for the management of abnormal posture, tremor and involuntary movement | Human Necessities | 62 | Expired |
| US4522625A | Drug dispenser comprising wall formed of semipermeable member and enteric member | Human Necessities | 61 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.