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Browse by Category: Main > Information Technology
Class Information
Number: 369/275.5
Name: Dynamic information storage or retrieval > Storage medium structure > Optical track structure (e.g., phase or diffracting structure, etc.) > Protection (e.g., preventing damage to medium, etc.)
Description: Subject matter wherein some means of guarding is provided to prevent some undesired effect.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8685621 First-side dual-layer optical data storage disk and method of manufacturing the same Apr. 1, 2014
8582415 Multilayer optical recording medium Nov. 12, 2013
8530140 Optical information recording medium and method for manufacturing the same Sep. 10, 2013
8526292 Manufacturing method for optical recording medium, optical recording medium, optical information device, and information reproducing method Sep. 3, 2013
8470514 Information recording medium and method for manufacturing the same Jun. 25, 2013
8451708 Manufacturing method for optical recording medium, optical recording medium, optical information device, and information reproducing method May. 28, 2013
8264944 Manufacturing method for optical recording medium, optical recording medium, optical information device, and information reproducing method Sep. 11, 2012
8241834 Optical recording medium and production method therefor, and sputtering target and production method therefor Aug. 14, 2012
8189452 Manufacturing method for optical recording medium, optical recording medium, optical information device, and information reproducing method May. 29, 2012
8144568 Information recording medium, information recording apparatus and method, and information reproducing apparatus and method Mar. 27, 2012
8130628 Manufacturing method for optical recording medium, optical recording medium, optical information device, and information reproducing method Mar. 6, 2012
8014261 Optically-readable disk with copy protection device Sep. 6, 2011
8014262 Optical information recording medium Sep. 6, 2011
7995452 Thin optical data storage media with hard coat Aug. 9, 2011
7986611 High-density optical recording media and method for making same Jul. 26, 2011
7944806 Method for modifying optical path on optical recording medium having distortion regions May. 17, 2011
7944804 Optical disk recording method, optical disk device, program, and recording medium May. 17, 2011
7916619 Optically-readable disk with copy protection device Mar. 29, 2011
RE42222 Reversible optival information-recording medium Mar. 15, 2011
7869328 Optical disk and optical disk reproducing device Jan. 11, 2011
7858290 Information recording medium and method for manufacturing the same Dec. 28, 2010
7859983 Optical disk and optical disk recording and reproducing device Dec. 28, 2010
7800993 Optical recording medium, recording method thereof and evaluation method of optical recording medium Sep. 21, 2010
7782746 Optical information recording medium and method for manufacturing same Aug. 24, 2010
7697407 Multilayer optical recording medium and method for recording information in multilayer optical recording medium Apr. 13, 2010
7684309 Multi-purpose high-density optical disc Mar. 23, 2010
7680025 Optical information recording medium, reproducing method thereof, and manufacturing method thereof Mar. 16, 2010
7659049 Phase-change recording material used for information recording medium and information recording medium employing it Feb. 9, 2010
7601481 Multilayer phase-change information recording medium, and method for recording and reproducing using the same Oct. 13, 2009
7583580 Optical recording medium as well as optical recording and reproduction method Sep. 1, 2009
7566523 Optical information-recording media and optical information-recording/reproduction apparatus Jul. 28, 2009
7542401 Birefringence characteristic measuring method, optical recording medium and optical information recording/reproducing apparatus Jun. 2, 2009
7422838 Phase-change optical recording medium Sep. 9, 2008
7420908 Optical recording medium Sep. 2, 2008
7406005 Optical recording medium, memory apparatus, and recording/reproduction method Jul. 29, 2008
7394751 Optical storage system optical storage medium and use of such a medium Jul. 1, 2008
7384723 Optical information recording medium Jun. 10, 2008
7385740 Hologram recording medium Jun. 10, 2008
7376073 Optical storage medium having distortion regions, and a method of modifying an optical storage medium to include distortion regions May. 20, 2008
7368223 Multi-stack optical data storage medium and use of such a medium May. 6, 2008
7368222 Optical data storage media with enhanced contrast May. 6, 2008
7370367 Security device and article incorporating same May. 6, 2008
7366081 Information recording medium Apr. 29, 2008
7352680 Optical recording medium having relation between reflection layer and pit length Apr. 1, 2008
7341820 Optical information recording medium Mar. 11, 2008
7335459 Phase-change optical recording medium Feb. 26, 2008
7295508 Optical disk Nov. 13, 2007
7294446 Digital analog recording using near field optical imaging Nov. 13, 2007
7275040 RFID security device for optical disc Sep. 25, 2007
7272107 Optical recording medium having super resolution layer Sep. 18, 2007

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