Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826788 | Composition for producing foamed glass molded products | Hans V. Dennert, Alois Seidl | 1989-05-02 |
| 4430107 | Method for making shaped foam glass bodies | Hans V. Dennert, Alois Seidl | 1984-02-07 |
| 4295810 | Apparatus for insulating building blocks | Hans V. Dennert | 1981-10-20 |