Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885030 | Titanium diboride composite body | Charles W. Phillips | 1989-12-05 |
| 4880600 | Method of making and using a titanium diboride comprising body | Charles W. Phillips | 1989-11-14 |
| 4859124 | Method of cutting using a titanium diboride body | Charles W. Phillips | 1989-08-22 |
| 4820392 | Method of increasing useful life of tool steel cutting tools | David W. Hoffman, Duane J. Schmatz | 1989-04-11 |