Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4510254 | Method of treating zeolite ores to remove discoloring impurities and improve its brightness and resulting finely ground zeolite | John R. Whyte, Jr., Ellen S. Forbus, Catherine M. Dentan, David Robert Collins | 1985-04-09 |
| 4492628 | Method of treating clay to improve its whiteness | Raymond H. Young, Robert Lester Brooks | 1985-01-08 |