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Your search returned 148 patents.
( 720/718 in Current US Classification ) |
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| Patent ID | Title | Date Filed |
| 6009433 | Information storage and information transmission media with parental control
| March 24, 1998 |
| 6009057 | Disc drive equipped with identification indication reader provided in an optical disc
| September 25, 1997 |
| 5999513 | Optical disc substrate having relatively thicker central supporting portion and relatively thinner recording portion
| March 24, 1998 |
| 5970039 | Optical recording medium, method of recording information, method of reproducing information, apparatus for recording information, and apparatus for reproducing information
| March 16, 1998 |
| 5875169 | Magneto-optic data storage device having multiple data storage levels
| June 12, 1997 |
| 5874132 | Multi-layer optical recording medium manufacturing method and apparatus thereof
| August 31, 1995 |
| 5852598 | Disk-shaped sound recording medium, especially CD
| December 19, 1996 |
| 5813010 | Information storage and information transmission media with parental control
| April 10, 1996 |
| 5799008 | Casing having multiple printed layers which provide a protected decorative area and unprotected area on which writing can be formed
| February 23, 1994 |
| 5761301 | Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk
| November 17, 1995 |
| 5761181 | Hyperspeed electro-optical digital data storage and retrieval system
| February 6, 1997 |
| 5681634 | Optical information medium, and method and apparatus for fabricating the same
| February 9, 1996 |
| 5618638 | Optical magnetic recording medium
| June 4, 1993 |
| 5598398 | Multiple data surface optical data storage system
| April 19, 1995 |
| 5554451 | Optical data recording medium
| September 28, 1992 |
| 5538773 | Optical recording medium and the reproducing apparatus for the optical recording medium
| June 28, 1994 |
| 5516568 | Optical recording medium
| June 7, 1995 |
| 5513169 | CD-ROM with machine-readable i.d. code
| November 29, 1994 |
| 5508087 | Organic-optic recording tapes
| May 26, 1994 |
| 5506398 | Optical data recording and reproducing apparatus and method employing an optical head at the center of a spherical recording medium
| December 29, 1994 |
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