IP Library › Granted Patent US 6,643,306
Granted Patent Utility
US 6,643,306 · Confirmation No. 2643

SEMICONDUCTOR LASER DEVICE IN WHICH COMPRESSIVE STRAIN ACTIVE LAYER IS SANDWICHED BETWEEN TENSILE STRAIN OPTICAL WAVEGUIDE LAYERS AND AVERAGE STRAIN IS LIMITED

Inventor: Toshiaki Fukunaga
Patented Case View Patent ↗ View Publication ↗
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 Code Description Pages PDF
2003-08-28 IFEE Issue Fee Payment (PTO-85B) 1 View
2001-10-31 TRNA Transmittal of New Application 1 View
2001-10-31 SPEC Specification 31 View
2001-10-31 CLM Claims 7 View
2001-10-31 ABST Abstract 1 View
2001-10-31 DRW Drawings-only black and white line drawings 6 View
2001-10-31 OATH Oath or Declaration filed 3 View
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Quick Facts
Patent No.
US 6,643,306
App. No.
09/984,798
Filed
2001-10-31
Granted
2003-11-04
Pub. No.
US20020051476A1
Art Unit
2828
PTA
0 days