Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865444 | Apparatus and method for determining luminosity of hydrocarbon fuels | Tsoung Y. Yan | 1989-09-12 |
| 4851374 | Apparatus and method for regenerating coked fluid cracking catalyst | Tsoung Y. Yan | 1989-07-25 |
| 4828680 | Catalytic cracking of hydrocarbons | Billy K. Huh, Tsoung Y. Yan | 1989-05-09 |
| 4819831 | Droplet generating apparatus | Frederick L. Dryer, Dennis E. Walsh | 1989-04-11 |
| 4804274 | Method and apparatus for determining phase transition temperature using laser attenuation | — | 1989-02-14 |