Issued Patents 2019
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10456768 | Aluminum oxide forming heat transfer tube for thermal cracking | Jorge J. Perdomo | 2019-10-29 |
| 10351784 | Pyrolysis furnace tubes | David B. Spicer | 2019-07-16 |
| 10207242 | Alumina forming refinery process tubes with mixing element | David B. Spicer | 2019-02-19 |