Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4475953 | Emulsion and method of making same | Allen C. Ludwig, Larry W. Wolter | 1984-10-09 |
| RE31575 | Sulfur compounds and method of making same | Allen C. Ludwig, John M. Dale | 1984-05-01 |
| 4290816 | Sulfur compounds and method of making same | Allen C. Ludwig, John M. Dale | 1981-09-22 |