Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4349456 | Non-vitreous ceramic metal oxide microcapsules and process for making same | — | 1982-09-14 |
| 4314827 | Non-fused aluminum oxide-based abrasive mineral | Melvin A. Leitheiser | 1982-02-09 |