Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9447131 | Lignosulfonate of a certain quality and method of preparation of lignosulfonate of a certain quality | Bengt Joensson, Hans Grundberg | 2016-09-20 |
| 4780804 | Method and an arrangement for enabling the magnetizing current passing through a transformer to be minimized when an asymmetric load is applied to the secondary side of the transformer | — | 1988-10-25 |
| 4704672 | Method and arrangement for varying a voltage occurring between the electrodes of an electrostatic dust separator | — | 1987-11-03 |
| 4486704 | Control device for an electrostatic dust separator | Sigvard Matts | 1984-12-04 |