Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5059301 | Process for the preparation of recarburizer coke | John K. Shigley | 1991-10-22 |
| 5028311 | Delayed coking process | John K. Shigley, Steve Harris | 1991-07-02 |
| 4998709 | Method of making graphite electrode nipple | Robert R. Griffin, Ta-Wei Fu | 1991-03-12 |
| 4959139 | Binder pitch and method of preparation | Dave L. Blakeburn, II, Ta-Wei Fu | 1990-09-25 |