Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8404205 | Apparatus and method for producing polycrystalline silicon having a reduced amount of boron compounds by forming phosphorus-boron compounds | Richard M. Halstead, Michael W. Keevan | 2013-03-26 |