IP Library Granted Patent US 6,721,253
Granted Patent Utility
US 6,721,253 · Confirmation No. 4772

DISKLIKE RECORDING MEDIA, A METHOD FOR DETECTING FORGED DISKS, AN ANTI-FORGERY SYSTEM FOR PERFORMING A TRUE-FALSE JUDGEMENT BASED ON INFORMATION COLLECTED FROM THE RECORDING MEDIA, AND A MANUFACTURING APPARATUS FOR RECORDING INFORMATION IN THE DISKS

Inventor: Tetsuya Kondo
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Code Description Pages PDF
2017-03-18 C.AD.PAIR Change of Address via Patent Application Information Retrieval (PAIR) 1 View
2017-03-18 C.AD.PAIR Change of Address via Patent Application Information Retrieval (PAIR) 1 View
2008-09-10 EBCC.AD Notice of Change of Address Place in File Wrapper Due to Electronic Business Center(EBC) Customer Number Update 1 View
2003-10-02 IFEE Issue Fee Payment (PTO-85B) 1 View
2002-12-20 TRNA Transmittal of New Application 3 View
2002-12-20 A.PE Preliminary Amendment 5 View
2002-12-20 SPEC Specification 19 View
2002-12-20 CLM Claims 4 View
2002-12-20 ABST Abstract 1 View
2002-12-20 DRW Drawings-only black and white line drawings 12 View
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Quick Facts
Patent No.
US 6,721,253
App. No.
10/326,228
Filed
2002-12-20
Granted
2004-04-13
Pub. No.
US20030142602A1
Art Unit
2655
PTA
-2 days