Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883687 | Fluid bed process for producing polysilicon | Robert H. Allen | 1989-11-28 |
| 4820587 | Polysilicon produced by a fluid bed process | Robert H. Allen | 1989-04-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883687 | Fluid bed process for producing polysilicon | Robert H. Allen | 1989-11-28 |
| 4820587 | Polysilicon produced by a fluid bed process | Robert H. Allen | 1989-04-11 |