Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4910334 | Recovery of overbased alkaline earth metal additives from centrifugates | William H. Tyson, Jr. | 1990-03-20 |
| 4889618 | Treatment of catalyst fines-oil mixtures | William H. Tyson, Jr. | 1989-12-26 |
| 4772399 | Recovery of succinimides from filter cakes | William H. Tyson, Jr. | 1988-09-20 |
| 4614597 | Recovery of oil and sulfonate from filter cake | William H. Tyson, Jr. | 1986-09-30 |
| 4544491 | Recovery of hydrocarbon oil from filter cakes | William H. Tyson, Jr. | 1985-10-01 |
| 4501670 | Recovery of oil and sulfonate from filter cake | William H. Tyson, Jr. | 1985-02-26 |