Assignee
SPECTRADISC CORP
US·5 granted patents·656 citations·filing 1997–2001
Top patents by PatentIndex Score
5 records- 0197US6338933B1Methods and apparatus for rendering an optically encoded medium unreadableSPECTRADISC CORP·Filed 1999·Granted Jan 15, 2002·181 cites·32 claims
- 0295US6011772AMachine-readable optical disc with reading-inhibit agentSPECTRADISC CORP·Filed 1997·Granted Jan 4, 2000·253 cites·17 claims
- 0394US6434109B2Machine-readable optical disc with reading-inhibit agentSPECTRADISC CORP·Filed 2001·Granted Aug 13, 2002·109 cites·14 claims
- 0492US6531262B1Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistantSPECTRADISC CORP·Filed 2000·Granted Mar 11, 2003·35 cites·47 claims
- 0591US6343063B1Machine-readable optical disc with reading-inhibit agentSPECTRADISC CORP·Filed 1999·Granted Jan 29, 2002·78 cites·6 claims
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