| 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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| 02/12/1991 | US4991448 Function checking system for magnetic tape cassette |
| 02/11/1991 | CA2022676A1 Magnetic disk cartridge |
| 02/09/1991 | CA2022742A1 Magnetic tape cassettes |
| 02/07/1991 | WO1991001555A1 Process for the production of a magnetic-tape cassette casing |
| 02/06/1991 | EP0411978A1 Bobbin for winding a tape, particularly an alveolar tape containing electronic components |
| 02/06/1991 | EP0411673A2 Video cassette integral dust door latch/spring |
| 02/06/1991 | EP0411670A2 Disk cartridge |
| 02/06/1991 | EP0411622A2 Video cassette integral actuator/reel lock/spring |
| 02/06/1991 | EP0411237A2 Display case for a jacketed cassette |
| 02/06/1991 | EP0293494B1 Memorizing device with moving information carriers |
| 02/05/1991 | US4991048 Disc cartridge casing with shutter slidably fitted therein to uncover a pick-inserting hole |
| 02/05/1991 | US4991047 Tape guides and method of manufacturing the same |
| 02/05/1991 | US4990077 Injection mold |
| 02/05/1991 | US4989806 Tape cartridge housing fastener system |
| 01/30/1991 | EP0193614B1 Disk-shaped record carrier |
| 01/30/1991 | CN1048946A System for recording/reproducing signals on/from a magnetic tape in a cassette |
| 01/30/1991 | CN1011445B Magnetic head supporting device of tape-recorder |
| 01/29/1991 | US4989195 Disk recording/reproducing system using disk identification signal to retrieve stored control parameters |
| 01/29/1991 | US4989191 Data processing system with mixed media memory packs |
| 01/29/1991 | US4989111 Tape cassette utilizing fiber optic bundle |
| 01/29/1991 | US4989107 Microfloppy disk drive with centering mechanism |
| 01/29/1991 | US4989105 Front-loading |
| 01/29/1991 | US4988573 Medium related members |
| 01/29/1991 | US4988204 Joint inspection apparatus |
| 01/29/1991 | US4988000 Videocassette storage and display sleeve |
| 01/29/1991 | US4987999 Videocassette storage and display sleeve |
| 01/24/1991 | DE3923898A1 Verfahren zur herstellung eines gehaeuses einer magnetbandkassette A method of manufacturing a housing of a magnetic tape cassette |
| 01/23/1991 | EP0409534A2 Carrier with tape connector interlock for videocassette |
| 01/23/1991 | EP0409110A2 System for identifying information on optical discs |
| 01/23/1991 | EP0408607A1 Tape cassette with rigid tape guide |
| 01/23/1991 | CN1048765A Magnetic-tape cassette |
| 01/22/1991 | US4987533 Method of managing data in a data storage hierarchy and a data storage hierarchy therefor with removal of the least recently mounted medium |
| 01/22/1991 | US4987514 Method and apparatus for preventing parasitic electrical discharges in magnetic disk drives |
| 01/22/1991 | US4987503 Method to produce pre-recorded tape cassettes |
| 01/22/1991 | US4986491 Reel leaf spring/cassette cover combinations and methods for assembly |
| 01/22/1991 | CA1279182C Conductive coatings and foams for anti-static protection, energy absorption, and electromagnetic compatability |
| 01/20/1991 | CA2021485A1 Packaging for sound and/or video recordings, or recording media |
| 01/17/1991 | CA2016327A1 Carrier with tape connector interlock for videocassette |
| 01/16/1991 | CN2069605U Postal communication tape |
| 01/16/1991 | CN2069604U Folding type magnetic disc cassette |
| 01/16/1991 | CN2069603U Automatic conversion of cartridge for video tape |
| 01/16/1991 | CN1048621A System for recording/reproducing signals on/from maguetic tape, and apparatus and cassette for use in the system |
| 01/15/1991 | US4985799 Disk cartridge with improved disk cleaning |
| 01/15/1991 | US4985798 Magnetic tape cassette having improved dust proofing |
| 01/15/1991 | US4984753 Tape cassette |
| 01/15/1991 | US4984751 Spool for strip-form recording substrates, in particular for photographic films |
| 01/10/1991 | WO1991000594A1 Method for compensating for the unique mechanical and electrical characteristics of a disc drive |
| 01/09/1991 | EP0407140A2 Disc drive apparatus |
| 01/09/1991 | EP0407120A1 Reel lock for video cassette |
| 01/09/1991 | EP0406943A1 System for recording/reproducing signals on/from magnetic tape, and apparatus and cassette for use in the system |
| 01/09/1991 | CN2069161U Magnetic tape (cartridge) and winding tape axle of high fidelity and small size |
| 01/09/1991 | CN2069160U Pouched holder for computer floppy disk |
| 01/09/1991 | CN2069159U Magnetic tape cartridgl |
| 01/08/1991 | US4984122 Tape cassette with air blocking baffles |
| 01/08/1991 | US4984120 Cleaning cassette for a video cassette tape deck |
| 01/08/1991 | US4984119 Cleaning apparatus for magnetic data tape cartridges |
| 01/08/1991 | US4984113 Information storage and reproduction apparatus and method employing a flexible belt record member |
| 01/08/1991 | US4984110 Tape cartridge holder arrangement in a magnetic recording and reproducing device |
| 01/08/1991 | US4983496 Directing laser beams, continuous movement, scanning, modulation |
| 01/08/1991 | US4983439 Method of manufacturing a recording medium and recording medium |
| 01/08/1991 | US4982911 Belt drive for power transfer to cartridge |
| 01/08/1991 | US4982636 Severing |
| 01/04/1991 | CA2020214A1 Reversible cassette |
| 01/02/1991 | EP0405661A1 System for recording/reproducing signals on/from a magnetic tape in a cassette |
| 01/02/1991 | EP0405629A2 Device for associating descriptive inserts with cases for video cassettes |
| 01/02/1991 | EP0405046A2 Cassette delivery system |
| 01/02/1991 | CN1048280A System for recording/reproducing signals on magnetic tape in cassettes |
| 01/02/1991 | CN1011095B Non-oscillating spool for belt driven cartridge |
| 01/01/1991 | US4982399 Information processing apparatus |
| 01/01/1991 | US4982075 Information recording medium with track group indicators |
| 01/01/1991 | US4981538 Process for producing information recording medium |
| 01/01/1991 | US4981211 Videotape cassette storage container having a photograph mat |
| 12/27/1990 | WO1990016066A1 Method and apparatus for cleaning magnetic tapes |
| 12/27/1990 | EP0404591A2 A method of moulding a tape cassette storage case |
| 12/27/1990 | EP0404245A1 Magnetic-tape cassette |
| 12/26/1990 | CN1011000B Method for mfg. tape reel |
| 12/26/1990 | CN1010999B Disc cassette |
| 12/26/1990 | CN1010993B Magnetic tape recording and/or reproducing apparatus with rotary head assembly |
| 12/26/1990 | CA2019655A1 System for recording/reproducing signals on/from a magnetic tape in a cassette |
| 12/25/1990 | US4980883 Disk tray |
| 12/25/1990 | US4980785 Disk drive slot dust protector |
| 12/25/1990 | US4979690 Apparatus and method for winding up magnetic tapes in cassettes |
| 12/23/1990 | CA2019371A1 Magnetic-tape cassette |
| 12/19/1990 | EP0402920A2 Apparatus for and method of applying part onto cartridge |
| 12/18/1990 | US4979135 Vision system illumination calibration apparatus |
| 12/18/1990 | US4979065 Disc cartridge having a liner and an elastic member for maintaining the liner in contact with a disc |
| 12/18/1990 | US4979062 Disk drive architecture |
| 12/18/1990 | US4978083 Reel holder for retaining reels of video film |
| 12/18/1990 | US4978009 Video cassette box with removable panel |
| 12/18/1990 | US4977787 Electromechanical device for changing the position of head mounting plate in a magnetic tape apparatus |
| 12/18/1990 | CA1278091C Disc cartridge |
| 12/18/1990 | CA1277923C Disk cartridge |
| 12/16/1990 | WO1990016064A1 A gear-wheel drive for a cleaning cassette for use in cassette tape recorders |
| 12/16/1990 | CA2056615A1 Gear-wheel drive for a cleaning cassette for use in cassette tape recorders |
| 12/13/1990 | WO1990015507A1 Television program selection |
| 12/13/1990 | WO1990015001A1 Case for video tape cassettes |
| 12/12/1990 | EP0402037A2 Disk Cartridge |
| 12/12/1990 | EP0357600A4 Video cassettes |
| 12/12/1990 | CN2067449U Recorder tape |
| 12/12/1990 | CN2067448U Single-reel tape with hanging hole |