Randolph E. Campbell
41Patents
10h-index
22Co-inventors
75Inventor score
Filing activity: Jun 27, 1983 → Feb 14, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4580816A | Quick disconnect tube coupling | Emerging Cross-Sectional Technologies | 138 | Expired |
| US8399006B2 | Posterior segment drug delivery | Emerging Cross-Sectional Technologies | 68 | Active |
| US8277830B2 | Posterior segment drug delivery | Emerging Cross-Sectional Technologies | 61 | Active |
| US4490145A | Ostomy pouch with deodorizing filter | Human Necessities | 50 | Expired |
| US8623395B2 | Implantable therapeutic device | Chemistry; Metallurgy | 38 | Active |
| US8795712B2 | Posterior segment drug delivery | Emerging Cross-Sectional Technologies | 27 | Active |
| US8808727B2 | Posterior segment drug delivery | Emerging Cross-Sectional Technologies | 25 | Active |
| US8298578B2 | Posterior segment drug delivery | Emerging Cross-Sectional Technologies | 23 | Active |
| US9033911B2 | Injector apparatus and method for drug delivery | Human Necessities | 22 | Active |
| US8905963B2 | Injector apparatus and method for drug delivery | Human Necessities | 17 | Active |
| US9883968B2 | Fluid exchange apparatus and methods | Human Necessities | 9 | Active |
| US9066779B2 | Implantable therapeutic device | Chemistry; Metallurgy | 7 | Active |
| US9851351B2 | Posterior segment drug delivery | Emerging Cross-Sectional Technologies | 7 | Active |
| US9861521B2 | Injector apparatus and method for drug delivery | Human Necessities | 6 | Active |
| US10166142B2 | Small molecule delivery with implantable therapeutic device | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US10398593B2 | Ophthalmic implant for delivering therapeutic substances | Human Necessities | 2 | Active |
| US10617557B2 | Combined drug delivery methods and apparatus | Human Necessities | 2 | Active |
| US11065151B2 | Therapeutic agent formulations for implanted devices | Human Necessities | 2 | Active |
| US10874548B2 | Therapeutic agent formulations for implanted devices | Human Necessities | 2 | Active |
| US10010448B2 | Insertion and removal methods and apparatus for therapeutic devices | Human Necessities | 2 | Active |
| US10656152B2 | Posterior segment drug delivery | Emerging Cross-Sectional Technologies | 2 | Active |
| US10500091B2 | Expandable drug delivery devices and methods of use | Human Necessities | 2 | Active |
| US11110001B2 | Expandable drug delivery devices and methods of use | Human Necessities | 1 | Active |
| US11786396B2 | Injector apparatus and method for drug delivery | Human Necessities | 1 | Active |
| US10265215B2 | Injector apparatus and method for drug delivery | Human Necessities | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.