Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6897749 | Magnetic energy storage device | Karin Thorburn, Udo Fromm, Peter Hessling, Arne Gustafsson, Christian Sasse +2 more | 2005-05-24 |
| 6898095 | Bidirectional VSC converter with a resonant circuit | Bo Bijlenga, Gunnar Asplund, Peter Lundberg, Niklas Johansson, Staffan Norrga | 2005-05-24 |
| 6404656 | Control equipment for thyristor-controlled series capacitor equipment, and a method for control thereof | Lennart Angquist | 2002-06-11 |
| 6361147 | Direct electrostatic printing method and apparatus | — | 2002-03-26 |
| 6361148 | Direct electrostatic printing method and apparatus | Anders Ingelhag, Göran Nybom, Henrik Gustavsson, Krister Uvnäs, Lennart Sjostedt +1 more | 2002-03-26 |
| 6102525 | Method and apparatus for controlling the print image density in a direct electrostatic printing apparatus | — | 2000-08-15 |
| 6082850 | Apparatus and method for controlling print density in a direct electrostatic printing apparatus by adjusting toner flow with regard to relative positioning of rows of apertures | — | 2000-07-04 |
| 6081283 | Direct electrostatic printing method and apparatus | — | 2000-06-27 |
| 5701239 | High-voltage direct current transmission installation having a high voltage regulation capability | Per-Erik Bjorklund, Lars-Erik Juhlin | 1997-12-23 |
| 5694306 | Method and device for control of a series-compensated converter station | Per-Erik Bjorklund | 1997-12-02 |
| 5666277 | Series-compensated converter station | Per-Erik Bjorklund, Tommy Holmgren, Urban strom | 1997-09-09 |
| 5657213 | Method and device for control of a series-compensated converter station | Per-Erik Bjorklund | 1997-08-12 |
| 5627735 | Method and device for compensation of unbalance in a series compensated converter station | Per-Erik Bjorklund, Lars-Erik Juhlin | 1997-05-06 |
| 5621626 | Method and device for control of an installation for transmission of high-voltage direct current | Per-Erik Bjorklund, Lars-Erik Juhlin | 1997-04-15 |