| Patents for G11B 11 - Recording on, or reproducing from, the same record carrier wherein for these two operations the methods or means are covered by different main groups of groups or by different subgroups of group; Record carriers therefor (14,351) |
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| 01/20/1988 | EP0253282A2 Thin-film having large kerr rotation angle and production process thereof |
| 01/13/1988 | EP0252813A1 High-frequency light polarisation modulator |
| 01/13/1988 | EP0252445A1 Apparatus for optically recording and reproducing information in record tracks on a rotatable record disc |
| 01/12/1988 | US4719154 Magneto-optic recording element with amorphous aluminum-nitrogen alloy layer |
| 01/12/1988 | US4719137 Aluminum nitride dielectric layer |
| 01/07/1988 | EP0251749A2 Optical-magnetic recording medium |
| 01/07/1988 | EP0251561A1 Magnetic field generator |
| 01/05/1988 | US4717628 Magnetooptical storage element |
| 12/29/1987 | US4716063 Transfer layer is composed of unsaturated cycloacetal compound, mercapto compound, and (meth)acrylic ester |
| 12/22/1987 | CA1230677A1 Magneto-optical file memory |
| 12/22/1987 | CA1230484A1 Optical storage system having expanded capacity |
| 12/16/1987 | EP0249214A2 Electrophotographic image recording system |
| 12/16/1987 | EP0249199A1 Optoelectronic signal recording medium and method of making same |
| 12/09/1987 | EP0248212A2 Magnetic device and method of manufacture |
| 12/08/1987 | US4712203 Method and apparatus for thermo magnetic recording/erasing information with preselected magnetic field switching |
| 12/08/1987 | US4711821 Opto-magnetic recording medium |
| 12/03/1987 | WO1987007422A1 Magneto-optical disk |
| 12/02/1987 | EP0247810A2 Optical turnable system |
| 12/01/1987 | US4710912 Air cushion-optical data read head |
| 12/01/1987 | US4710895 Magnetic bubble memory module with protected terminals |
| 12/01/1987 | US4710434 Mulitlayers of gadoliium, terbium or dysprosium and alloy of iron, cobalt and germanium |
| 12/01/1987 | US4710431 Crystalline recording layer of boron, rare earth metal, and transition metal alloy |
| 12/01/1987 | US4710418 Sealed edge area of substrate is free of recording material; corrosion resistant |
| 11/19/1987 | EP0245833A2 Magneto-optical recording medium |
| 11/19/1987 | EP0245743A2 Magneto-optical recording medium |
| 11/19/1987 | DE3715443A1 Optical system for photo-magnetic recording device |
| 11/17/1987 | US4707814 Extended cavity laser recording method and apparatus |
| 11/17/1987 | US4707755 Optical read-out magnetic head |
| 11/11/1987 | EP0244827A2 Improved optical head |
| 11/10/1987 | US4706232 Optical recording and reproducing apparatus |
| 11/04/1987 | EP0243976A2 Method for recording, reproducing and erasing information and thin film for recording information |
| 11/04/1987 | EP0243656A2 Method and apparatus for encoding and direct overwriting of magneto-optic data |
| 11/03/1987 | CA1228919A1 Magneto-optical apparatus |
| 10/28/1987 | EP0242837A1 Magnetooptical recording apparatus |
| 10/21/1987 | EP0242217A2 Optically recordable carriers |
| 10/21/1987 | EP0241924A2 Optically readable/writable card |
| 10/20/1987 | US4701895 Magnetic biasing apparatus for magneto-optic recording including a permanent magnet |
| 10/20/1987 | US4701894 Magnetic biasing apparatus for magneto-optic recording including a magnetic circuit |
| 10/20/1987 | US4701881 Magneto-optical recording medium |
| 10/20/1987 | US4701880 Optical system for recording/reproducing information by means of a dielectric breakdown effected by photoswitching of a bias-voltage |
| 10/14/1987 | EP0241222A1 Opto-magnetic recording apparatus for sequentially driving optical head drive means and biasing magnetic field generation means |
| 10/14/1987 | EP0241007A2 Optical head |
| 10/13/1987 | US4700198 Process for recording information by irradiation of, an deposition on, a substrate |
| 10/07/1987 | EP0240046A1 Magneto-optical recording element and a magneto-optical recording device |
| 10/07/1987 | EP0239974A2 Magneto-optical recording medium |
| 10/06/1987 | US4698820 Neodymium, praseodymium, iron garnets; lasers |
| 10/06/1987 | US4698281 Garnet-type magnetic material high faraday rotation magnetic film containing such a material and process for the production thereof |
| 09/30/1987 | EP0239390A2 Optomagnetic recording medium |
| 09/29/1987 | CA1227571A1 Optical recording by energy-induced fractionation and homogenization |
| 09/24/1987 | WO1987005737A1 Electrochromic data recording systems |
| 09/23/1987 | EP0238055A2 Optical recording apparatus |
| 09/22/1987 | US4695514 Magneto-optical memory element |
| 09/22/1987 | US4695510 Corrosion resistance |
| 09/15/1987 | US4694358 Magneto-optic recording structure and method |
| 09/15/1987 | US4693943 Magnetooptical recording medium |
| 09/09/1987 | EP0235800A2 Plastic substrate for optical disk and process for producing the same |
| 09/09/1987 | EP0235592A2 Electron beam recording and reproducing apparatus |
| 09/09/1987 | CN87101889A Optical storage |
| 09/08/1987 | CA1226672A1 Magneto-optical memory element |
| 09/02/1987 | EP0234588A2 Optical memory |
| 09/01/1987 | US4691308 Apparatus for reproducing information from magnetooptical recording medium |
| 09/01/1987 | US4690861 Magneto optical recording medium |
| 09/01/1987 | CA1226376A1 Electron beam enhanced surface modification for making highly resolved structures |
| 08/26/1987 | EP0233644A2 An optical recording disc |
| 08/19/1987 | EP0233034A2 Optical memory element |
| 08/19/1987 | EP0232867A1 Optical memory device |
| 08/19/1987 | EP0232293A1 Process and device for recording an information signal |
| 08/13/1987 | WO1987004844A1 Optical memorizing device |
| 08/13/1987 | WO1987004838A1 Apparatus and method for increasing storage capacity of recording media |
| 08/12/1987 | EP0232134A2 Optical disc and disc drive apparatus for writing/reading data into/from the disc |
| 08/12/1987 | EP0231856A2 Method for reversible optical data storage |
| 08/11/1987 | US4686661 Information processing apparatus used in a magneto-optical information recording-reproducing apparatus and having improved erasing capability |
| 08/11/1987 | CA1225467A1 Method of manufacturing optical memory element |
| 08/04/1987 | US4684454 Sputtering process for making magneto optic alloy |
| 07/29/1987 | EP0230325A2 Device for producing a high frequency modulation magnetic field used in magneto-optical recording |
| 07/28/1987 | US4683176 Optical magnetic recording member |
| 07/28/1987 | US4682998 Electronic system for automatically controlling the weight of glass gobs in a molten glass feeder |
| 07/28/1987 | CA1224872A1 Optical-focus-position controlling apparatus |
| 07/22/1987 | EP0229395A2 Optical magnetic recording and reproducing method and apparatus |
| 07/22/1987 | EP0229292A1 Optical-magnetic recording medium |
| 07/21/1987 | US4682316 Optical information processing apparatus for light beam focus detection and control |
| 07/21/1987 | US4682311 Photomagnetic differential reproducing system |
| 07/15/1987 | EP0228909A2 A magnetooptical storage element |
| 07/15/1987 | EP0228814A1 An optical memory element |
| 07/14/1987 | US4680742 Magneto-optical recording element |
| 07/14/1987 | US4680211 Recording disks |
| 07/14/1987 | CA1224270A1 Magneto-optic memory element |
| 07/14/1987 | CA1224268A1 Method of recording information in a magneto-optical record carrier, apparatus for carrying out the method, and magneto-optical record carrier for use in an apparatus for carrying out the method |
| 07/07/1987 | US4679180 Process for direct over-writing of digital data recorded on magneto-optical recording media |
| 07/01/1987 | EP0227480A2 Magneto-optical recording |
| 07/01/1987 | EP0226647A1 Read/write head for optical disks |
| 06/30/1987 | US4677601 Method of forming permanent memory locations in a magnetooptic memory medium |
| 06/30/1987 | US4677513 Magneto-optic thin film head and method of use |
| 06/24/1987 | CN86102515A Laser magnetic recording grafting technique and recording carrier thereof |
| 06/23/1987 | US4675767 Opto-magnetic recording medium |
| 06/23/1987 | CA1223349A1 Optical system in a magneto-optical memory device |
| 06/16/1987 | EP0225801A1 Optical devices |
| 06/10/1987 | EP0225141A2 Magneto-optical recording media |
| 06/09/1987 | US4672594 Magneto-optical recording system utilizing a leakage magnetic field of focusing actuator |
| 06/09/1987 | US4672593 Optical head with improved extinction ratio for magneto-optical memory |