Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874518 | Porous silica microspheres having a silanol enriched surface | Jurgen Kohler | 1989-10-17 |
| 4847159 | Substrates coated with organo-silanes that are sterically-protected | Joseph L. Glajch | 1989-07-11 |