IP Library › Granted Patent US 6,674,494
Granted Patent Utility
US 6,674,494 · Confirmation No. 5573

LIQUID CRYSTAL OPTICAL ELEMENT AND TEST METHOD FOR ITS BOUNDARY LAYER

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2003-08-11 IFEE Issue Fee Payment (PTO-85B) 1 View
2001-08-27 TRNA Transmittal of New Application 2 View
2001-08-27 SPEC Specification 30 View
2001-08-27 CLM Claims 4 View
2001-08-27 ABST Abstract 1 View
2001-05-03 TRNA Transmittal of New Application 4 View
2001-05-03 ADS Application Data Sheet 2 View
2001-05-03 SPEC Specification 15 View
2001-05-03 CLM Claims 2 View
2001-05-03 ABST Abstract 1 View
2001-05-03 DRW Drawings-only black and white line drawings 3 View
2001-05-03 LET. Miscellaneous Incoming Letter 1 View
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Quick Facts
Patent No.
US 6,674,494
App. No.
09/847,333
Filed
2001-05-03
Granted
2004-01-06
Pub. No.
US20020122148A1
Art Unit
2871
PTA
-7 days