Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7224665 | Optical recording medium its manufacturing method and injection molding apparatus In an optical disc in which an information signal is recorded/reproduced by irradiating a laser beam to a disc substrate 1 in which an information signal portion 1c has been provided on one principal plane from the side where the information sig... | 05/29/2007 |
| 7213749 | Interactive multimedia smart affinity card A multimedia card, including, a multimedia portion, a multimedia card holder portion, and a multimedia cover portion, and wherein the multimedia cover portion and the multimedia card holder portion releasably cover the multimedia card portion in between the multimed... | 05/08/2007 |
| 7194751 | Optical information medium An optical information medium comprises a pair of discs which are bonded to each other, an optical recording layer provided on at least one of the discs, and a reflecting layer formed on an upper side of the optical recording layer. The optical information medium fu... | 03/20/2007 |
| 7094516 | Benzobisazole compound and optical recording medium containing the compound An optical recording medium having an organic dye layer as a recording layer on a substrate, wherein at least one benzobisazole-based compound represented by a general formula (1) is contained in the recording layer: | 08/22/2006 |
| 7042676 | Hard disk clamping apparatus An apparatus for clamping a hard disk includes a motor rotating body having a boss inserted in a central hole of the hard disk and having a threaded portion formed on an outer circumferential surface of the boss and an accommodation surface supporting part a lower s... | 05/09/2006 |
| 7027385 | Optical disk, disk substrate, and drive An optical disk 100 is provided with a hub 3 at the central portion of a substratel. A relationship Y/X≧0.015, preferably Y/X≧0.05 is satisfied where X is the projected area of the substrate 1 and Y is a contact area between the hub 3... | 04/11/2006 |
| 6970400 | Information recording medium with magnetic marks, recording and reproducing apparatus therefor, and head positioning method using detected magnetic leakage fields from the magnetic marks A recording and reproducing apparatus including a recording magnetic head and a reproducing magnetic head with their floating height lowered for high density recordation and reproduction is provided. An information recording medium is provided on which it is possibl... | 11/29/2005 |
| 6926198 | Wheel calculator A wheel chart having at least one rigid disk formed by a compact disk which, in addition to having a mirrored or reflective layer capable of carrying reproducible information, has legible matter on an obverse side which cooperates with a member such as a transparent... | 08/09/2005 |
| 6795389 | Optical information recording medium with substrate and multiple information An optical information recording medium is provided with a plurality of information layers (2, 3), each of which has a sector structure in which a data area (8, 12) is divided in the circumferential direction by a sector address (9, 13). The pos... | 09/21/2004 |
| 6636475 | Compact disk storage device A system for storing a set of disks, each disk having a first major surface and a second major surface opposed to the first major surface and defining a uniform central aperture. The system comprises a set of spacers, any one of which is adapted to cooper... | 10/21/2003 |
| 6445676 | Optical information medium An optical information medium comprises a pair of discs which are bonded to each other, an optical recording layer provided on at least one of the discs, and a reflecting layer formed on an upper side of the optical recording layer. The optical informatio... | 09/03/2002 |
| 6404730 | Optical disk having a groove and a projection for combining two disk members A disk medium and a method of manufacturing the disk medium are disclosed. The disk medium includes a first disk member having a penetrating hole, and a second disk member having a projecting portion, wherein the projecting portion is placed within the pe... | 06/11/2002 |
| 6368691 | Substrates disk for digital video A substrate disk consists of a first and a second substrate connected to one another wherein the first and second substrates have center holes. The first substrate has at least one projection positioned at the circumference of the center hole and projecti... | 04/09/2002 |
| 6307830 | Protected recording medium A protected recording medium generally in the form of a disk and in one embodiment corresponding to a compact disk (CD) is provided with an annular spacer on one side thereof near the periphery thereof that will elevate an exposed downward recordable regi... | 10/23/2001 |
| 6160787 | Multiple layer optical recording medium for use with two different wavelength laser beams A double sided (or higher multiple sided) data storing compact disc for optically recorded data has data surfaces that are separated by a thin film of wavelength selective material that passes light of one frequency and reflects light of a second (or mult... | 12/12/2000 |
| 6031813 | Optical recording medium having dual information surfaces The optical recording medium of this invention includes: a first substrate having a first information surface; a semitransparent reflection film formed on the first information surface of the first substrate; a second substrate having a second information... | 02/29/2000 |
| 6021279 | Colorimetric device for use in a camera A colorimetric device, particularly suitable for a camera, that provides reliable color data so that a subject field is photographed with appropriate color balance. A CPU reads out sensor data DB, DR corresponding to red (R) and blue... | 02/01/2000 |
| 6018512 | System and method of encoding for identifying a given surface among several identically patterned disk surfaces A system and method is disclosed for assembling a pre-formatted top half and a pre-formatted bottom half of a disk platter, and for further assembling pre-formatted disk platters into a multi-platter MO disk drive, with the servo sectors in a predetermine... | 01/25/2000 |
| 5966367 | Optical information recording medium An optical information recording medium which can be played back by both a playback system for an SD (Super-density Disk) and a playback system for an HDMCD (High Density Multimedia Compact Disk), or by both the playback system for the SD and a playback s... | 10/12/1999 |
| 5875171 | Interlocking disk stack that prevents disk slip in a storage disk An interlocking disk apparatus for preventing disk slip in a disk stack of a magnetic or optical disk drive is provided. A textured region within the inner diameter of the disks in the disk stack is forced in tight contact with a conformable adjacent surf... | 02/23/1999 |
| 5726969 | Optical recording medium having dual information surfaces The optical recording medium of this invention includes: a first substrate having a first information surface; a semitransparent reflection film formed on the first information surface of the first substrate; a second substrate having a second information... | 03/10/1998 |
| 5608715 | Multi-layered recording disk and recording/reproducing system using the same A multi-layered disk which can improve a data recording density and also can record signals and allow reading and reproduction of the recorded signals in good conditions and a recording system as well as a reproducing system using the same and a multi-lay... | 03/04/1997 |
| 5579296 | Optically readable thin film digital data storage medium An optically readable data storage medium includes a thin film data carrier fabricated from first and second juxtaposed plastic layers. A microembossed data surface is positioned within an interface zone and includes physically displaced surface elements ... | 11/26/1996 |
| 5378517 | Optical disc having signal recording layer on each side and method for producing same A double-side optical disc formed by a pair of optical disc halves bonded together, and a process for producing the double-side optical disc. An adhesive is applied to the disc halves, which are then bonded together at an angle relative to each other in w... | 01/03/1995 |
| 4917751 | Method of producing double sided optical memory disks Double sided optical memory disks are produced by dropping a viscous adhesive material hardenable by ultraviolet radiation at predetermined longitudinal intervals onto an elongated cloth material of uniform thickness thereby causing the adhesive material ... | 04/17/1990 |
| 4101135 | Sound reproducing unit A voice or sound unit adapted for use on toys and the like has a mechanical linkage system with a joint capable of transmitting sound indicia while isolating the tone arm from any absorption of stylus movement. The tone arm can employ flexure hinges to in... | 07/18/1978 |
