Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4466218 | Fixed abrasive polishing media | John C. S. Shen | 1984-08-21 | $18,050,000 |
| 4393628 | Fixed abrasive polishing method and apparatus | John C. S. Shen | 1983-07-19 | $18,760,000 |