Hiroaki Okada
27Patents
25h-index
26Co-inventors
85Inventor score
Filing activity: Jun 19, 1973 → Mar 7, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4652441A | Prolonged release microcapsule and its production | Emerging Cross-Sectional Technologies | 355 | Expired |
| US5061492A | Prolonged release microcapsule of a water-soluble drug | Emerging Cross-Sectional Technologies | 223 | Expired |
| US6113943A | Sustained-release preparation capable of releasing a physiologically active substance | Human Necessities | 204 | Expired |
| US4659696A | Pharmaceutical composition and its nasal or vaginal use | Emerging Cross-Sectional Technologies | 203 | Expired |
| US5202352A | Intravascular embolizing agent containing angiogenesis-inhibiting substance | Human Necessities | 152 | Expired |
| US6699500B2 | Sustained-release preparation capable of releasing a physiologically active substance | Human Necessities | 148 | Expired |
| US4711782A | Prolonged release microcapsules and their production | Emerging Cross-Sectional Technologies | 143 | Expired |
| US5271945A | Sustained release microcapsule for water soluble drug | Emerging Cross-Sectional Technologies | 141 | Expired |
| US6376461B1 | Sustained-release preparation | Human Necessities | 136 | Expired |
| US4728721A | Polymer, production and use thereof | Performing Operations; Transporting | 131 | Expired |
| US5480656A | Prolonged release microcapsules | Human Necessities | 127 | Expired |
| US4917893A | Prolonged release microcapsules | Emerging Cross-Sectional Technologies | 110 | Expired |
| US4211769A | Preparations for vaginal administration | Emerging Cross-Sectional Technologies | 107 | Expired |
| US5631020A | Method for producing microcapsule | Emerging Cross-Sectional Technologies | 81 | Expired |
| US4849228A | Polymer, production and use thereof | Performing Operations; Transporting | 75 | Expired |
| US5643607A | Prolonged release microcapsules | Human Necessities | 75 | Expired |
| US5442043A | Peptide conjugate | Human Necessities | 71 | Expired |
| US5422363A | Stable pharmaceutical composition of fumagillol derivatives | Human Necessities | 61 | Expired |
| US5750100A | Sustained releasable parenteral pharmaceutical preparations and method of producing the same | Human Necessities | 55 | Expired |
| US5196406A | Cyclodextrin complex of fumagillin derivative | Performing Operations; Transporting | 54 | Expired |
| US5631021A | Method for producing microcapsule | Emerging Cross-Sectional Technologies | 51 | Expired |
| US5814342A | Prolonged release microcapsules | Human Necessities | 49 | Expired |
| US5476663A | Prolonged release microcapsule | Emerging Cross-Sectional Technologies | 45 | Expired |
| US6190700A | Production of sustained-release preparation for injection | Human Necessities | 41 | Expired |
| US5628993A | Sustained releasable parenteral pharmaceutical preparations and method of producing the same | Human Necessities | 31 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.