DW

David F. Welch

SD Sdl: 4 patents #1 of 8Top 15%
📍 Atherton, CA: #2 of 32 inventorsTop 7%
🗺 California: #257 of 13,957 inventorsTop 2%
Overall (1994): #6,604 of 165,921Top 4%
4
Patents 1994

Issued Patents 1994

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5349602 Broad-area MOPA device with leaky waveguide beam expander David G. Mehuys, Stephen O'Brien 1994-09-20
5337328 Semiconductor laser with broad-area intra-cavity angled grating Robert J. Lang, Kenneth M. Dzurko, Donald R. Scifres 1994-08-09
5321718 Frequency converted laser diode and lens system therefor Robert G. Waarts, Donald R. Scifres, Robert J. Lang, Derek W. Nam 1994-06-14
5282080 Surface coupled optical amplifier Donald R. Scifres 1994-01-25