Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5788761 | Process for the manufacture of construction materials | Dieter Hums | 1998-08-04 |
| 4422989 | Method of producing hydrothermally cured aerated concrete building units | Dieter Hums, Armin Hartmann, Werner Wetzig | 1983-12-27 |