Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883687 | Fluid bed process for producing polysilicon | Marcelian F. Gautreaux | 1989-11-28 |
| 4871524 | Hydrogen purification process | — | 1989-10-03 |
| 4868013 | Fluidized bed process | — | 1989-09-19 |
| 4851297 | Dopant coated bead-like silicon particles | Jameel Ibrahim | 1989-07-25 |
| 4820587 | Polysilicon produced by a fluid bed process | Marcelian F. Gautreaux | 1989-04-11 |