Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10294109 | Primary distillation boron reduction | April Ashworth | 2019-05-21 |
| 8404205 | Apparatus and method for producing polycrystalline silicon having a reduced amount of boron compounds by forming phosphorus-boron compounds | Laura Prine, Richard M. Halstead | 2013-03-26 |