Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826668 | Process for the production of ultra high purity polycrystalline silicon | William C. Breneman, Robert N. Flagella, Jon M. Gaston | 1989-05-02 |
| 4805556 | Reactor system and method for forming uniformly large-diameter polycrystalline rods by the pyrolysis of silane | William D. Burke, Thomas R. Thoman, McRea B. Willmert | 1989-02-21 |