Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Air sandwiched optical discs with closable pressure relief holes

Air sandwiched optical discs with closable pressure relief holes

US Patent 5774448 · Granted Jun 30, 1998

Estimated economic value: $6,602,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Copy protection using multiple security levels on a programmable CD-ROM2006
Phase-change recording element for write once applications2002
Hybrid optical disc construction2002
Hybrid optical disc construction2001
Air bag module assembly2000
DRDW differential phase tracking method and apparatus1999
Optical discs with cover sheets and pressure equalization of the enclosed air1999
Optical discs with cover sheets and pressure equalization of the enclosed air1999
Dynamic tracking control in an optical recording system by diffraction-based mar1999
Multihead optical disc drives with direct reading after writing operation1999
Diffraction-based direct read during write using magneto-optic recording media1998
Optical discs with cover sheets and dynamic pressure stabilization of the enclos1998