IP Library › Granted Patent US 6,512,878
Granted Patent Utility
US 6,512,878 · Confirmation No. 5236

VARIABLE OPTIC ATTENUATOR

Inventor: Chih Chiang Chang
Patented Case View Patent ↗
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 Code Description Pages PDF
2001-12-24 TRNA Transmittal of New Application 2 View
2001-12-24 SPEC Specification 7 View
2001-12-24 CLM Claims 5 View
2001-12-24 ABST Abstract 1 View
2001-12-24 DRW Drawings-only black and white line drawings 6 View
2001-12-24 OATH Oath or Declaration filed 2 View
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Quick Facts
Patent No.
US 6,512,878
App. No.
10/036,212
Filed
2001-12-24
Granted
2003-01-28
Examiner
ULLAH, AKM E
Art Unit
2874
PTA
-71 days