| Patents for G11B 23 - Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus (25,121) |
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| 03/20/1990 | US4909455 Method and device for winding magnetic tape using magnetic alignment |
| 03/15/1990 | DE3834389A1 Store for tape cassettes |
| 03/15/1990 | DE3829928A1 Video cassette cover |
| 03/15/1990 | DE3828519A1 Data disk with shutter |
| 03/14/1990 | EP0358442A2 Disk cartridge |
| 03/14/1990 | EP0358269A1 Disc cassette |
| 03/14/1990 | EP0358243A2 Multidisk player |
| 03/14/1990 | EP0357613A1 System for the storage of recording media |
| 03/14/1990 | EP0357600A1 Video cassettes |
| 03/14/1990 | EP0157826B1 Modulable storage device for compact discs, magnetic recording cassettes and the like |
| 03/14/1990 | CN2054560U Key type tape frame |
| 03/14/1990 | CN1007189B Tape protection device for magnetic tape cassette |
| 03/14/1990 | CN1007188B Tape cassette |
| 03/14/1990 | CN1007183B Aegnetic tape cassette |
| 03/13/1990 | US4908817 Cartridge for optical data discs |
| 03/13/1990 | US4908728 VCR protector for VCR machine |
| 03/13/1990 | US4908726 Disk cartride having an improved shutter |
| 03/13/1990 | US4908725 Recording medium casing with erase prevention device |
| 03/13/1990 | US4908723 Compact recording and/or reproducing apparatus with oblique rotary head |
| 03/08/1990 | WO1990002403A1 Storage case for circular data carriers |
| 03/07/1990 | EP0357259A2 Tape cassette reel having an upper reel portion formed by dichromatic moulding resin |
| 03/07/1990 | EP0356811A2 Optical memory disk hub and method for its production |
| 03/07/1990 | EP0207111B1 Container for phono records or video discs |
| 03/07/1990 | EP0164131B1 Information recording medium disc and method and apparatus for recording/reproducing information |
| 03/07/1990 | CN2054192U Envelop for computer floppy disk |
| 03/07/1990 | CN1040283A 光盘 CD |
| 03/06/1990 | CA1266414A1 Videocassette sleeve and cover |
| 03/01/1990 | DE3829458A1 Case for video cassettes |
| 02/28/1990 | EP0355925A1 A method of making a carrier with optically readable, digitable information |
| 02/27/1990 | US4905217 Enclosure for optical disk or the like |
| 02/27/1990 | US4905114 Disk drive compatible tape cartridge with device for positioning the tape relative to the disk drive |
| 02/27/1990 | US4905113 Magnetic tape cassette having a slider mounted on the lower casing member |
| 02/27/1990 | US4905112 Scent cassette |
| 02/27/1990 | US4903916 Cassette reel spring having rolled edges |
| 02/27/1990 | US4903915 Tape cassette having means for locking reels thereof |
| 02/27/1990 | US4903878 Method for manufacturing a tape guide cylinder of small thickness |
| 02/22/1990 | WO1990001772A1 Overwrite-type magnetooptical recording medium cartridge |
| 02/21/1990 | EP0355011A2 Disc magazine |
| 02/21/1990 | CN2053365U Appliance for depositing cassette tapes |
| 02/20/1990 | US4903255 Optical recording disc |
| 02/20/1990 | US4903224 Optical information recording disk |
| 02/20/1990 | US4903159 Tape cassette |
| 02/20/1990 | US4903155 Disc drive |
| 02/20/1990 | US4901879 VCR cover |
| 02/20/1990 | US4901856 Packing for recording medium |
| 02/20/1990 | CA1266011A1 Closure construction having backup support means |
| 02/14/1990 | CN2052927U Magnetic head support device for cassette recorder |
| 02/14/1990 | CN1039674A Display racks and brackets therefor |
| 02/13/1990 | US4901180 Porous high molecular weight polyethylene lining; dustless |
| 02/13/1990 | US4901171 Optical tape end sensing arrangement for magnetic tape cassette |
| 02/13/1990 | US4901167 Loop bin |
| 02/13/1990 | US4900386 Method of producing labels each having a circuit forming an oscillating circuit |
| 02/13/1990 | US4899950 Cassette case for magnetic tape and the like featuring improved tape tension control arrangement |
| 02/13/1990 | US4899946 Apparatus for inspection and repair of recording tape cassettes |
| 02/13/1990 | US4899879 Indexing unit for audio-visual materials |
| 02/07/1990 | EP0353502A2 System and apparatus for automatic management of texts recorded on magnetic tapes, or the like, in a safety room protected against damaging or destructive events |
| 02/07/1990 | CN1006743B Magnetic tape cassette with magnetic tape protective closure and bias means thereof |
| 02/07/1990 | CN1006742B Shuttering mechanism for a cassette |
| 02/06/1990 | US4899330 Adaptor for mini CD |
| 02/06/1990 | US4899329 Optically readable disc with a centering member fixed to a transparent substrate |
| 02/06/1990 | US4899326 Magazine-housed disk player |
| 02/06/1990 | US4899245 Method of checking magnetic tape cassette lid opening operation |
| 02/06/1990 | US4899244 Disk cartridge with hub seal |
| 02/06/1990 | US4899243 Flat spring structure for magnetic tape cassettes, in particular video cassettes |
| 02/06/1990 | US4899242 Locking mechanism of magnetic tape cassette |
| 02/06/1990 | US4899238 Cartridge shutter actuating device in recording and/or reproducing apparatus |
| 02/06/1990 | US4899237 Divided housing for supporting magnetic disks |
| 02/06/1990 | US4898338 Magnetic tape cassette |
| 02/06/1990 | US4898277 Cover-locking device for a video tape cassette |
| 01/31/1990 | EP0353000A2 A shutter of a disk cartridge, apparatus for and method of its manufacture |
| 01/31/1990 | EP0352999A2 Disc cartridge |
| 01/31/1990 | EP0352918A2 A disk cartridge |
| 01/31/1990 | CN2052140U Video tape reels |
| 01/30/1990 | US4897752 Welding cleaning sheet to inside of cartridge case |
| 01/30/1990 | US4897751 Recording tape cartridge |
| 01/30/1990 | US4897750 Encodable insert for a recording cassette |
| 01/30/1990 | US4897540 Apparatus for detecting the presence or absence of overlap at tape joints |
| 01/30/1990 | US4897134 Ultrasonic welding hubs to magnetic recording diskettes |
| 01/30/1990 | US4896925 Storage container for information carrier |
| 01/30/1990 | US4896769 Coded storage display tray |
| 01/25/1990 | WO1990000799A1 Videocassette with counter for indicating the number of viewings |
| 01/25/1990 | WO1990000795A1 A cleaning cassette for cassette tape recorders |
| 01/25/1990 | DE3803982A1 Data carrier with duplication prevention |
| 01/24/1990 | CN1006587B Magnetic tape cassette |
| 01/23/1990 | US4896312 Cartridge loading apparatus |
| 01/23/1990 | US4896238 Tape cassette with pressable cap for fixing reel on reel base |
| 01/23/1990 | US4896237 Magnetic tape cartridge compatible with disk drive and tape drive mechanism therefor |
| 01/23/1990 | US4896040 Method of inspecting floppy disk casing |
| 01/23/1990 | US4895253 Locking device for restricting the viewing of video cassettes |
| 01/18/1990 | DE3919676A1 Video cassette with a counter for indicating plays |
| 01/17/1990 | EP0351251A2 Magnetic disc cartridge |
| 01/17/1990 | EP0351178A2 Disk cartridge |
| 01/17/1990 | EP0351160A2 Disk restraint |
| 01/17/1990 | EP0351159A2 Disk cartridge |
| 01/16/1990 | US4894743 Replaceable cleaner/drive members for a tape drive machine |
| 01/16/1990 | US4894737 Magnetic head apparatus having projections extending from at least a front side thereof |
| 01/16/1990 | US4894733 Tape winding method and machine |
| 01/16/1990 | US4893766 Tape cassette having a front lid and a back lid |
| 01/16/1990 | US4893414 Apparatus for measuring video cassette tape usage |
| 01/11/1990 | DE3921982A1 Protective circuit for optical disc players |