Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11155735 | Microabrasive compositions containing oöids | Usha F. Lingappa, John P. Grotzinger, Woodward Fischer | 2021-10-26 |
| 10407601 | Microabrasive compositions containing oöids | Usha F. Lingappa, John P. Grotzinger, Woodward Fischer | 2019-09-10 |