Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7373046 | Optical add/drop multiplexers | Bengt Sahlgren, Sten Helmfrid | 2008-05-13 |
| 7260292 | Optical coupler | Bengt Sahlgren, Mikael Bergman, Raoul Stubbe, Sten Helmfrid, Bengt Johansson | 2007-08-21 |