Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7741237 | Sealing composition for sealing aluminum nitride and aluminum oxynitride ceramics | Yi Zheng, George C. Wei | 2010-06-22 |
| 7659220 | Sealing composition for sealing aluminum nitride and aluminum oxynitride ceramics | Yi Zheng, George C. Wei | 2010-02-09 |
| 6674001 | Solder glass and electrical device employing same | Paul Salvi | 2004-01-06 |
| 6589896 | Lead- and arsenic-free borosilicate glass having improved melting characteristic | — | 2003-07-08 |
| 6373193 | Long life halogen cycle incandescent lamp and glass envelope composition | Karin Naumann, Franz Ott, Ottmar Becker | 2002-04-16 |
| 6284686 | Lead and arsenic free borosilicate glass and lamp containing same | — | 2001-09-04 |
| 6118216 | Lead and arsenic free borosilicate glass and lamp containing same | — | 2000-09-12 |
| 6017838 | Lead free soft glass having high electrical resistivity | — | 2000-01-25 |
| 5557171 | High intensity discharge lamp with ultra violet absorbing envelope | R. Bruce Biddulph | 1996-09-17 |
| 5528107 | Lead and arsenic free, solarization resistant glass | R. Bruce Biddulph | 1996-06-18 |
| 5391523 | Electric lamp with lead free glass | — | 1995-02-21 |
| 4717607 | Method of making a fluorescent lamp | Paul A. Pfizenmaier | 1988-01-05 |
| 4524301 | Compact fluorescent lamps | Sheppard Cohen, Nikolaos Barakitis, Frederick A. Loughridge | 1985-06-18 |
| 4288713 | Lamp having opaque coating | — | 1981-09-08 |