Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8294353 | Lighting apparatus having barrier coating for reduced mercury depletion | István Károly Deme, Ottokar GYULASI, Gabriella Révész, Géza István Szeghy | 2012-10-23 |
| 7427829 | Fluorescent lamp having improved barrier layer | István Károly Deme, Judit Szigeti | 2008-09-23 |
| 7391041 | Germicidal UV reactor and UV lamp | Katalin Toth | 2008-06-24 |
| 6713950 | Low volatility slurry for emission mix powder | Thomas F. Soules | 2004-03-30 |
| 6369502 | Low pressure mercury vapor discharge lamp with doped phosphor coating | Zsuzsa Auber, Laszlo Balazs, István Károly Deme, Judit Szigeti | 2002-04-09 |
| 5917291 | Electrodeless fluorescent lamp having an improved phosphor distribution arrangement and a method of making the same | Thomas F. Soules, Judit Szigeti, Pamela K. Whitman, Laszlo Balazs | 1999-06-29 |
| 5004948 | Luminescent material, especially for application in mercury vapor gas discharge light sources, and mercury vapor gas discharge light source | Peter Kinczel, Laszlo Balazs | 1991-04-02 |