Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885145 | Method for providing oxygen ion vacancies in lanthanide oxides | D. Alan R. Kay | 1989-12-05 |
| 4857280 | Method for the regeneration of sulfided cerium oxide back to a form that is again capable of removing sulfur from fluid materials | D. Alan R. Kay | 1989-08-15 |
| 4826664 | Methods of desulfurizing gases | D. Alan R. Kay | 1989-05-02 |