IP Library › Granted Patent US 6,816,449
Granted Patent Utility
US 6,816,449 · Confirmation No. 2285

OPTICAL PICKUP COMPATIBLE WITH A DIGITAL VERSATILE DISK AND A RECORDABLE COMPACT DISK USING A HOLOGRAPHIC RING LENS

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2011-12-28 EBCC.AD Notice of Change of Address Place in File Wrapper Due to Electronic Business Center(EBC) Customer Number Update 1 View
2011-06-28 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2011-06-28 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2011-05-31 PA.. Power of Attorney 1 View
2011-05-31 R3.73 Assignee showing of ownership per 37 CFR 3.73 2 View
2011-05-31 N417 Electronic Filing System Acknowledgment Receipt 2 View
2005-05-12 COCOUT Certificate of Correction - Post Issue Communication 1 View
2004-07-29 LET. Miscellaneous Incoming Letter 1 View
2004-07-29 IFEE Issue Fee Payment (PTO-85B) 1 View
2001-08-17 TRNA Transmittal of New Application 3 View
2001-08-17 SPEC Specification 10 View
2001-08-17 CLM Claims 3 View
2001-08-17 ABST Abstract 1 View
2001-08-17 DRW Drawings-only black and white line drawings 5 View
2001-08-17 OATH Oath or Declaration filed 1 View
2001-08-17 LET. Miscellaneous Incoming Letter 1 View
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Quick Facts
Patent No.
US 6,816,449
App. No.
09/930,963
Filed
2001-08-17
Granted
2004-11-09
Pub. No.
US20020027862A1
Art Unit
2655
PTA
-28 days