The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| 7321415 | Environmental system including vacuum scavenge for an immersion lithography apparatus An environmental system controls an environment in a gap between an optical assembly and a device and includes a fluid barrier and an immersion fluid system. The fluid barrier is positioned near the device. The immersion fluid system delivers an immersion fluid that... | 01/22/2008 |
| 7170583 | Lithographic apparatus immersion damage control A lithographic apparatus includes a substrate table to hold a substrate; a substrate table position measurement system to measure a position quantity of the substrate table, a projection system to project a patterned radiation beam onto a target portion of the subst... | 01/30/2007 |
| 7034319 | Electron beam irradiation apparatus, electron beam irradiation method, original disk, stamper, and recording medium An electron beam irradiation apparatus, includes a support section for supporting an electron beam irradiation subject to be irradiated with an electron beam, and an electron beam irradiation head opposed to the electron beam irradiation subject via a minute space, ... | 04/25/2006 |
| 6837072 | Rewritable optical recording medium and manufacturing method and apparatus therefor A rewritable optical recording medium includes a segmented groove area in which the groove track is segmented along a rotating direction of the recording medium by groove non-forming portions to form a plurality of groove portions; and a continuous groove area in wh... | 01/04/2005 |
| 6757391 | OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN OPTICAL DISK REPRODUCTION APPARATUS, A MARKING FORMING APPARATUS, A METHOD OF FORMING A LASER MARKING ON A OPTICAL DISK, AND A METHOD OF MANUFACTURING AN OPTICAL DISK Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical di... | 06/29/2004 |
| 6567351 | Playback device with predetermined, random function for selection of data groups Proposed is a playback device (1), especially a compact disc changer, which enables a random selection of data groups of recording media to be reproduced in succession. The playback device (1) comprises an input unit (5) and a random generator (10) for ra... | 05/20/2003 |
| 6502755 | Optical data storage card The optical data-storage card includes an optical data-storage medium layer supported on the card. The data-storage medium layer includes a plurality of data storage tracks for storing data therein. Each of the tracks having at least an arc-segment wherei... | 01/07/2003 |
| 6438074 | Optical recording medium manufacturing master recording apparatus A master recording apparatus includes a revolving base (31) for revolving a substrate (1) coated with resist thereon, an irradiating mechanism (32), an elevator mechanism (33) for making the irradiating mechanism (32) capable of moving in a vertical direc... | 08/20/2002 |
| 5742567 | Master optical disk recording apparatus A master optical disk recording apparatus forms a train of pits on a recording layer of a master optical disk by a laser beam which is emitted from the laser light source and is modulated by an acousto-optic modulator. An objective lens in the recording a... | 04/21/1998 |
| 5195083 | Disc-shaped recording medium capable of recording data signals by means of light beam A disc-shaped recording medium is used in a recording/reproducing apparatus in which a light beam is arranged to scan along a groove formed as a concentrical or spiral recording track, to record or reproduce data. Additional data which has preeviously bee... | 03/16/1993 |
| 4821250 | Process and apparatus for the recording of an information signal A process and an apparatus are specified for recording a digital signal onto a recording carrier (4), in particular a signal for recording in compact disc data format, in which an engraving or cutting stylus (2) is pressed substantially by dead weight alo... | 04/11/1989 |
| 4678736 | Optical recording media on which information is stored and method of making same Optical recording media for storing information on which bits are formed by applying radiant energy to a polydiacetylene thin film supported by a substrate, so that the main chain structure of the polydiacetylene is transformed into another form or forms.... | 07/07/1987 |
| 4519065 | Metallized information carrying discs Coded information bearing elements such as video discs may be produced from multilayered articles. The articles comprise a base having a thermoplastic, radiation curable resin on one surface and an embossable electrically conductive or radiation reflectiv... | 05/21/1985 |
| 4148067 | Modulated groove records with a thick metal layer and method for making same A modulated groove record, such as a video disc, has a coating on a conductive layer bearing the modulated groove formed from the material of the layer. The material may be aluminium and the coating may be a uniform dielectric of aluminium oxide formed by... | 04/03/1979 |
| 4101907 | Overcoat structure for optical video disc An optical recording medium comprises a light reflecting material coated with a light absorbing material which is coated with a transparent barrier layer and overcoated with a relatively thick transparent protective layer. During recording, portions of th... | 07/18/1978 |
| 4060831 | Wideband electromechanical recording system A system for recording signals in a disc master comprises an electromechanical cutterhead responsive to the signals and a signal processing means interposed between the cutterhead and a signal source. The signals applied to the cutterhead are of the encod... | 11/29/1977 |
| 4023185 | Ablative optical recording medium An ablative recording medium comprises a substrate coated with a light reflecting coating which in turn is coated with a light absorptive layer of 4-phenylazo-1-naphthylamine formed by evaporation of Sudan Black B dyestuff. During recording, portions of t... | 05/10/1977 |
| 3952146 | Electron beam recording of wide-band signals on thermoplastic film This invention concerns a method of recording wide-band signals on a thermoplastic film. The signal to be recorded is converted to an intensity modulation of a beam of electrons which is directed at the surface of a thin thermoplastic film carried on a co... | 04/20/1976 |