Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874440 | Superplastic aluminum products and alloys | Ralph R. Sawtell, Craig L. Jensen | 1989-10-17 |
| 4869870 | Aluminum-lithium alloys with hafnium | Roberto J. Rioja, John E. Jacoby | 1989-09-26 |
| 4832910 | Aluminum-lithium alloys | Roberto J. Rioja, John E. Jacoby | 1989-05-23 |
| 4797165 | Aluminum-lithium alloys having improved corrosion resistance and method | Ralph R. Sawtell, Warren H. Hunt, Jr. | 1989-01-10 |