Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5838104 | Shield for high pressure discharge lamps | Douglas M. Rutan, Jeannine A. Woyansky, Katherine L. McGinnis | 1998-11-17 |
| 5729090 | Sodium halide discharge lamp | Joseph A. Shrawder, Mohan Rajaram | 1998-03-17 |
| 5708331 | Electrodeless lamp with external insulative coating | Spiro Vamvakas, Timothy A. Taubert, Mahomed Hanif Girach, Vito J. Arsena | 1998-01-13 |
| 5683949 | Conversion of doped polycrystalline material to single crystal material | Mary Sue Kaliszewski, Lionel M. Levinson | 1997-11-04 |
| 5631522 | Low sodium permeability glass | Mohan Rajaram, Joseph A. Shrawder | 1997-05-20 |
| 5588992 | Conversion of doped polycrystalline material to single crystal material | Mary Sue Kaliszewski, Lionel M. Levinson | 1996-12-31 |
| 5569979 | UV absorbing fused quartz and its use for lamp envelopes | Cynthia A. Secen, Thomas G. Parham, Gary R. Allen, Robert L. Bateman, Paul G. Mathews | 1996-10-29 |
| 5549746 | Solid state thermal conversion of polycrystalline alumina to sapphire using a seed crystal | Jack M. Strok, Lionel M. Levinson | 1996-08-27 |
| 5540182 | Conversion of polycrystalline material to single crystal material using bodies having a selected surface topography | Lionel M. Levinson | 1996-07-30 |
| 5487353 | Conversion of doped polycrystalline material to single crystal | Mary Sue Kaliszewski, Lionel M. Levinson | 1996-01-30 |
| 5468168 | Means for supporting and sealing the lead structure of a lamp and method for making such lamp | Edward James Balaschak, George E. Sakoske | 1995-11-21 |
| 5451553 | Solid state thermal conversion of polycrystalline alumina to sapphire | Lionel M. Levinson, Randolph E. Maxwell, Mary Sue Kaliszewski | 1995-09-19 |
| 5449971 | Method, composition, and means for limiting lead wire arcing in an arc discharge lamp | Harihar D. Chevali | 1995-09-12 |
| 5440199 | Base for electrodeless discharge lamp | Raymond A. Heindl, Mark E. Duffy, Frederick Hetzel, David J. Marks, Lawrence T. Mazza +1 more | 1995-08-08 |
| 5427051 | Solid state formation of sapphire using a localized energy source | Randolph E. Maxwell, Mary Sue Kaliszewski, Marshall Gordon Jones, Lionel M. Levinson, Carl Edward Erikson | 1995-06-27 |
| 5412280 | Electrodeless lamp with external conductive coating | Vito J. Arsena, Spiro Vamvakas, Joseph C. Oberle | 1995-05-02 |
| 5404069 | Filament support for incandescent lamps | Ronald J. Olwert, Frederic F. Ahlgren, Laverne E. Walsh, Donald R. Schindler, Rolf S. Bergman +1 more | 1995-04-04 |
| 5394057 | Protective metal silicate coating for a metal halide arc discharge lamp | Timothy D. Russell, Charles N. Stewart, Ranajit K. Datta, Mary Sue Kaliszewski, Paul G. Mathews | 1995-02-28 |
| 5374872 | Means for supporting and sealing the lead structure of a lamp and method for making such lamp | Edward James Balaschak, George E. Sakoske | 1994-12-20 |
| 5353210 | Reflector lamp with low UV emission | Jack M. Strok, Thomas G. Parham | 1994-10-04 |
| 5350972 | UV absorbing lamp glass | Gerald L. Bucher, Christopher H. Welker, Edward E. Hammer, Thomas F. Soules | 1994-09-27 |
| 4690727 | Glaze polishing polycrystalline alumina material | Charles I. McVey | 1987-09-01 |
| 4633137 | Glaze polished polycrystalline alumina material | Charles I. McVey | 1986-12-30 |
| 4285732 | Alumina ceramic | Richard J. Charles, Svante Prochazka | 1981-08-25 |