Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673353 | Fiber and lens preform with deep radial gradient layer and method of manufacturing same | Robert Ward | 1997-09-30 |
| 5522003 | Glass preform with deep radial gradient layer and method of manufacturing same | Robert Ward | 1996-05-28 |
| 5200858 | Uni-directional gradient index of refraction glasses | James J. Hagerty, Guy E. Rindone | 1993-04-06 |
| 4929065 | Glass plate fusion for macro-gradient refractive index materials | James J. Hagerty | 1990-05-29 |
| 4516281 | Sewage treatment device | David B. MacPherson, Jay E. Paris, Robert W. Foley, Martin W. Greinier | 1985-05-14 |