Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5980629 | Methods for improving zero dislocation yield of single crystals | Richard L. Hansen, Larry E. Drafall, Robert M. McCutchan, John D. Holder, Leon A. Allen | 1999-11-09 |
| 5976247 | Surface-treated crucibles for improved zero dislocation performance | Richard L. Hansen, Larry E. Drafall, Robert M. McCutchan, John D. Holder, Leon A. Allen | 1999-11-02 |
| 5308446 | Fused quartz member for use in semiconductor manufacture | Peter P. Bihuniak, Gordon E. Dogunke | 1994-05-03 |
| 4911896 | Fused quartz member for use in semiconductor manufacture | Peter P. Bihuniak, Gordon E. Dogunke | 1990-03-27 |
| 4253861 | Method of copper staining a glass article | William A. Graff | 1981-03-03 |