Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4893169 | Lead frame and a process for the production of a lead with this lead frame | Helmut Rusch, Guenter Waitl, Hansjoerg Harrasser, Hans J. Richter, Lee FRANCIS +2 more | 1990-01-09 |
| 4826788 | Composition for producing foamed glass molded products | Heinz Dennert, Hans V. Dennert | 1989-05-02 |
| 4430107 | Method for making shaped foam glass bodies | Heinz Dennert, Hans V. Dennert | 1984-02-07 |