Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7989064 | Ceramic-coated tungsten powder | Ricky D. Morgan, Henry J. Stevens, Dale E. Benjamin, Tuan A. Dang, Timothy A. Frisk | 2011-08-02 |
| 7988760 | Method of making nanocrystalline tungsten powder | Henry J. Stevens | 2011-08-02 |
| 6478845 | Boron addition for making potassium-doped tungsten | Michael Salmen, Anna S. Nached, Maria Bozena Winnicka, Henry J. Stevens | 2002-11-12 |
| 6165412 | Method of making non-sag tungsten wire for electric lamps | Michael Salmen, Henry J. Stevens | 2000-12-26 |
| 6129890 | Method of making non-sag tungsten wire | Henry J. Stevens, Thomas J. Patrician, Harry D. Martin, III | 2000-10-10 |
| 5795366 | Method of manufacturing a non-sag tungsten wire for electric lamps | Michael Salmen, Alfred Gahn, Bernhard Altmann, Martin Fait | 1998-08-18 |
| 5785731 | Process of making a non-sag tungsten wire for electric lamps | Martin Fait, Joachim Fuchs, Alfred Gahn, Michael Salmen, Burkhard Ziemer | 1998-07-28 |