Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5912275 | Process for depolymerizing polyester | Stephen Hall, Richard Redfearn Hepner, Robert E. Michel, Donald Richard Wheatcraft, Jr. | 1999-06-15 |
| 5504122 | Recovery of dimethyl terephthalate from polymer mixtures | Robert E. Michel | 1996-04-02 |