Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5897309 | Sequential step belt furnace with individual concentric cooling elements | Robert P. Katz, William Wayne Olah | 1999-04-27 |
| 5421723 | Sequential step belt furnace with individual concentric cooling elements | Robert P. Katz, William Wayne Olah | 1995-06-06 |