Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9388509 | Method for synthesizing ultrahigh-purity silicon carbide | Ilya Zwieback, Avinash Gupta, Ping Wu, Gary E. Ruland, Thomas E. Anderson | 2016-07-12 |
| 9017629 | Intra-cavity gettering of nitrogen in SiC crystal growth | Ilya Zwieback, Avinash Gupta | 2015-04-28 |
| 8216369 | System for forming SiC crystals having spatially uniform doping impurities | Avinash Gupta, Edward Semenas, Ilya Zwieback, Andrew E. Souzis | 2012-07-10 |
| 7608524 | Method of and system for forming SiC crystals having spatially uniform doping impurities | Avinash Gupta, Edward Semenas, Ilya Zwieback, Andrew E. Souzis | 2009-10-27 |
| 5968261 | Method for growing large silicon carbide single crystals | Raymond G. Seidensticker, Richard H. Hopkins | 1999-10-19 |
| 5937317 | Method of making a low resistivity silicon carbide boule | Richard H. Hopkins, James P. McHugh, Hudson M. Hobgood | 1999-08-10 |
| 5895583 | Method of preparing silicon carbide wafers for epitaxial growth | Godfrey Augustine, Elizabeth Ann Halgas | 1999-04-20 |
| 5788768 | Feedstock arrangement for silicon carbide boule growth | Richard H. Hopkins | 1998-08-04 |
| 5746827 | Method of producing large diameter silicon carbide crystals | Richard N. Thomas, Raymond G. Seidensticker, Richard H. Hopkins | 1998-05-05 |
| 5683507 | Apparatus for growing large silicon carbide single crystals | Raymond G. Seidensticker, Richard H. Hopkins | 1997-11-04 |
| 5611955 | High resistivity silicon carbide substrates for high power microwave devices | Hudson M. Hobgood, James P. McHugh, Richard H. Hopkins | 1997-03-18 |
| 5501173 | Method for epitaxially growing .alpha.-silicon carbide on a-axis .alpha.-silicon carbide substrates | Albert Augustus Burk, Jr., Hudson M. Hobgood, Rowland C. Clarke, Graeme W. Eldridge, Charles D. Brandt | 1996-03-26 |
| 4594173 | Indium doped gallium arsenide crystals and method of preparation | Hudson M. Hobgood, Richard N. Thomas | 1986-06-10 |