Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4916359 | Gas discharge lamp envelope comprising a barium sulphate protective layer disposed on its inner surface | — | 1990-04-10 |
| 4646660 | Arrangement in apparatus for the combustion of waste gases | Ake Bjorkman | 1987-03-03 |
| 4606762 | Process for the recovery of mercury | Ake Sikander, Ake Bjorkman | 1986-08-19 |
| 4564174 | Device for the recovery of mercury | Ake Sikander, Ake Biorkman | 1986-01-14 |
| 4481889 | Method and apparatus for afterburning flue gases | Ake Sikander, Ake Bjorkman | 1984-11-13 |
| 4468011 | Device for the recovery of mercury | Ake Sikander, Ake Bjorkman | 1984-08-28 |
| 4440729 | Procedure for chemical, automatic dissolution of molybdenum core wire in tungsten filament coil and a device for implementing the procedure | — | 1984-04-03 |
| 4216406 | Electric lamp wherein the terminal socket cap contains a foamed cap cement which functions to prevent explosions and/or burning a hole through the cap | Karl-Ake G. Bjorkman | 1980-08-05 |