Issued Patents All Time
Showing 25 most recent of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10221500 | System for forming an ingot including crucible and conditioning members | Salvador Zepeda, Richard J. Phillips, Christopher Vaughn Luers, Steven L. Kimbel, Harold W. Korb +4 more | 2019-03-05 |
| 7691199 | Melter assembly and method for charging a crystal forming apparatus with molten source material | — | 2010-04-06 |
| 7497907 | Partially devitrified crucible | Richard J. Phillips | 2009-03-03 |
| 7465351 | Melter assembly and method for charging a crystal forming apparatus with molten source material | — | 2008-12-16 |
| 7344594 | Melter assembly and method for charging a crystal forming apparatus with molten source material | — | 2008-03-18 |
| 7291222 | Systems and methods for measuring and reducing dust in granular material | Hariprasad Sreedharamurthy, John David Hilker | 2007-11-06 |
| 6749683 | Process for producing a silicon melt | — | 2004-06-15 |
| 6652645 | Process for preparing a silicon melt | — | 2003-11-25 |
| 6589332 | Method and system for measuring polycrystalline chunk size and distribution in the charge of a Czochralski process | Steven M. Joslin, Hariprasad Sreedharamurthy, John Lhamon | 2003-07-08 |
| 6461427 | Barium doping of molten silicon for use in crystal growing process | Richard J. Phillips, Steven Jack Keltner | 2002-10-08 |
| 6454851 | Method for preparing molten silicon melt from polycrystalline silicon charge | Robert H. Fuerhoff, Mohsen Banan | 2002-09-24 |
| 6350312 | Strontium doping of molten silicon for use in crystal growing process | Richard J. Phillips, Steven Jack Keltner | 2002-02-26 |
| 6344083 | Process for producing a silicon melt | — | 2002-02-05 |
| 6319313 | Barium doping of molten silicon for use in crystal growing process | Richard J. Phillips, Steven Jack Keltner | 2001-11-20 |
| 6315828 | Continuous oxidation process for crystal pulling apparatus | Bayard K. Johnson | 2001-11-13 |
| 6284040 | Process of stacking and melting polycrystalline silicon for high quality single crystal production | Hariprasad Sreedharamurthy | 2001-09-04 |
| 6214109 | Apparatus for controlling the oxygen content in silicon wafers heavily doped with antimony or arsenic | — | 2001-04-10 |
| 6183553 | Process and apparatus for preparation of silicon crystals with reduced metal content | Steven M. Joslin, Harold W. Korb | 2001-02-06 |
| 6039801 | Continuous oxidation process for crystal pulling apparatus | Bayard K. Johnson | 2000-03-21 |
| 5980629 | Methods for improving zero dislocation yield of single crystals | Richard L. Hansen, Larry E. Drafall, Robert M. McCutchan, Leon A. Allen, Robert D. Shelley | 1999-11-09 |
| 5976247 | Surface-treated crucibles for improved zero dislocation performance | Richard L. Hansen, Larry E. Drafall, Robert M. McCutchan, Leon A. Allen, Robert D. Shelley | 1999-11-02 |
| 5919303 | Process for preparing a silicon melt from a polysilicon charge | — | 1999-07-06 |
| 5913975 | Crucible and method of preparation thereof | — | 1999-06-22 |
| 5904768 | Process for controlling the oxygen content in silicon wafers heavily doped with antimony or arsenic | — | 1999-05-18 |
| 5795381 | SIO probe for real-time monitoring and control of oxygen during czochralski growth of single crystal silicon | — | 1998-08-18 |