Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677920 | Upconversion fiber laser | David F. Welch, Steven Sanders, Donald R. Scifres | 1997-10-14 |
| 5657153 | Optical amplifier with complementary modulation signal inputs | John G. Endriz, David F. Welch, Steven Sanders, Donald R. Scifres | 1997-08-12 |
| 5654229 | Method for replicating periodic nonlinear coefficient patterning during and after growth of epitaxial ferroelectric oxide films | Florence Leplingard, John J. Kingston, Ross D. Bringans, David K. Fork, David F. Welch +1 more | 1997-08-05 |
| 5644584 | Tunable blue laser diode | Derek W. Nam, David F. Welch, Jo S. Major | 1997-07-01 |