Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4458057 | Process for producing spherical and porous vinyl resin particles | — | 1984-07-03 |
| 4229547 | Method of preparing spherical porous bead-type polymers | Louis Cohen | 1980-10-21 |