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| Number | Title | Issue Date |
| 8168282 | Trimethine cyanine compounds, their preparation and their use The present invention relates to a trimethine cyanine represented by the formula (1): wherein each of the symbols are defined in the specification. The present invention also relates to a use of the above dimeric trimethine... | 05/01/2012 |
| 8097324 | Enhanced security of optical article An optical article comprising a mark disposed on the optical article; wherein the mark comprises an optical state change material; wherein the optical state change material undergoes a change in its optical state when exposed to an activation signal selected from on... | 01/17/2012 |
| 8092891 | Bridged cyanine compound and optical recording material using the same A cyanine compound is represented by: wherein, R11 and R12 each independently represent a hydrogen atom, a hydroxyl group, a halogen atom, a nitro group, a cyano group, an organic group having 1 to 30 ... | 01/10/2012 |
| 8092890 | Optical information recording medium, method of recording information, and azo metal complex dye The optical information recording medium comprises a recording layer on a surface of a support. The surface of the support has pregrooves with a track pitch ranging from 50 to 500 nm, the recording layer comprises an azo metal complex dye, the azo metal complex dye ... | 01/10/2012 |
| 8075976 | Optical recording medium, optical recording material and metal complex compound An optical recording medium having excellent light resistance that includes a substrate; and a recording layer which is provided on the substrate directly or on another layer provided on the substrate, wherein the recording layer is capable of recording and/or readi... | 12/13/2011 |
| 8067080 | Optical recording medium Provided is an optical recording medium including, in sequence: a first substrate; a first information recording layer; an intermediate layer; a second information recording layer; and a second substrate having wobble convex portio... | 11/29/2011 |
| 8039076 | Dye and recording media utilizing the same The invention provides dyes for optical disc recoding media, having the general formula: wherein m, n is independently selected from integers 0-3; X represents oxygen, sulfur, C—R1, or ... | 10/18/2011 |
| 7955682 | Photochemical and photothermal rearrangements for optical data and image recording A system for recording and/or transmitting optical data or visual images includes an optical data or visual image recording medium and a light and/or heat source. The medium includes a markable coating established on a substrate. The markable coating includes a leuc... | 06/07/2011 |
| 7923091 | Indole compound, optical filter and optical recording material An indole compound represented by general formula (I): wherein R1 and R2 each represent a hydrogen atom, a hydrocarbon group having 1 to 30 carbon atoms or a substituent represented by general formula ... | 04/12/2011 |
| 7781044 | Organic compound for recording layer for high speed recording of information and optical recording medium including the same A recording layer including a novel organic compound for a high density optical recording medium is provided. The information may be recorded on the recording layer at a 2× speed or higher speed with a relatively lower writing power so that heat distribution of the... | 08/24/2010 |
| 7695793 | Compound, optical filter and optical recording material using the same A compound represented by the following general formula (I), wherein ring A and ring B each independently represent a benzene, naphthalene, or heterocyclic ring which may be substituted; R1 and R2 each... | 04/13/2010 |
| 7439008 | Optical recording medium, and, method and apparatus for optical recording and reproducing using optical recording medium The object of the present invention is to provide an optical recording medium in which a recording material of the optical recording medium has a high solubility in an organic solvent, so that the recording material can be shaped to film by a coating process and the... | 10/21/2008 |
| 7432036 | Non-resonant two-photon absorbing material, non-resonant two-photon emitting material, and method for inducing absorption or generating emission of non-resonant two photons by using the material A non-resonant two-photon absorbing material is provided, comprising a methine dye undergoing a non-resonant two-photon absorption, in which the methine dye is preferably a cyanine dye, a merocyanine dye or an oxonol dye, and a non-resonant two-photon absorbing mate... | 10/07/2008 |
| 7427432 | Optical recording medium A dual-layer optical recording medium, which is formed by adhering a disk substrate (inverted-stack structure) formed by stacking a reflective layer (1) and a recording layer (1) on a substrate (1) and a disk substrate (conventional-stack struct... | 09/23/2008 |
| 7425401 | Cyanine compounds, optical recording materials and optical recording media An optical recording medium containing a cyanine dyes of formula: Where at least one pair of R1 & R2 and R3 & R4 are benzyl moieties, rings A and B are each a benzene or naphthalene ring, Y1 and Y2 are C 1-30 organic groups... | 09/16/2008 |
| 7419762 | Media and method for limiting access to data thereon A media can comprise: a reflective layer, an oxygen penetrable UV coating, and a reactive layer disposed between the UV coating and the reflective layer. The reactive layer can comprise a reactive material that oxidizes with exposure to oxygen. ... | 09/02/2008 |
| 7402375 | Cyanine dyes The present invention provides organic dye compounds having their absorption maxima in a region ranging from the ultraviolet region to a relatively short wavelength visible region and uses thereof. The present invention provides specific monomethine cyanine dyes, li... | 07/22/2008 |
| 7390549 | Asymmetric bis (indolestyryl) compound and high density recording media utilizing the same An asymmetric bis(indolestyryl) compound. The asymmetric bis(indolestyryl) compound has formula (I): wherein A and B comprise benzene, naphthalene, or heterocyclic ring containing O, S, or N, R1 and... | 06/24/2008 |
| 7384677 | Metal alloys for the reflective or semi-reflective layer of an optical storage medium A silver-based alloy thin film is provided for the highly reflective or the semi-reflective layer of optical discs. Alloy additions to silver include magnesium, gold, rhodium, ruthenium, osmium, platinum, palladium, copper, silicon, cadmium, tin, lithium, nickel, co... | 06/10/2008 |
| 7384723 | Optical information recording medium An optical information recording medium including a substrate having successively disposed thereon a recording layer, an interlayer, a pressure sensitive adhesive layer and a cover film in which information is recordable and reproducible by irradiating laser light a... | 06/10/2008 |
| 7378221 | Metallocenyl phthalocyanines as optical recording media Mixtures of metallocenyl phthalocyanines obtainable by reacting a mixture A comprising two phthalocyanines: with a metallocene derivative in the presence of a catalyst, and also oligomeric metallocenyl phthalocyanines, proc... | 05/27/2008 |
| 7378220 | Optical information recording method and medium An optical information recording medium includes a substrate having disposed thereon a recording layer that is recordable by irradiating the recording layer with a laser having a wavelength of 450 nm or less. The recording layer contains a specific phthalocyanine de... | 05/27/2008 |
| 7378219 | Optical information carrier comprising immobilized proteorhodopsin The present invention relates to materials comprising hydrophilic polymers and immobilized proteorhodopsin and the use of such materials as an optical information carrier. The material comprises one or more hydrophilic polymers that are capable to form a homogeneous... | 05/27/2008 |
| 7374804 | Method for rendering surface layer of limited play disk lightfast An optically readable media (10) has an information-encoding layer (16) and at least one color-forming layer (12) that embodies an optical readout-limiting mechanism. In a first embodiment the at least one color-forming layer contains an additiv... | 05/20/2008 |
| 7371449 | Optical recording medium In an optical recording medium having two recording layers of a first recording layer and a second recording layer, the second recording layer contains metallized azo dyes represented by the following general formula (I) or (II), and recording characteristics of the... | 05/13/2008 |
| 7368221 | Changing light absorption by disruption of conjugation Copy-protected optical medium utilizing a composition comprising a transient optical state change security materials constrained to change the optical state light absorption at a wavelength of about 400 nm and an electron transfer agent. ... | 05/06/2008 |
| 7364780 | Thermally-sensitive medium with Fabry-Perot cavities A medium includes a plurality of Fabry-Perot cavities of varying depths. The cavities correspond to different colors which are produced by the respective cavities under incident light. A thermo-sensitive material covers the plurality of cavities. The cavities are se... | 04/29/2008 |
| 7361449 | Specific dye compound, optical information recording medium comprising specific dye, and information recording method using this optical information recording medium The present invention provides an optical information recording medium comprising a substrate having disposed thereon a recording layer, wherein the recording layer includes a recording dye represented by the following formula (I) or (II): | 04/22/2008 |
| 7354694 | Styryl dye The present invention provides styryl dyes which have absorption maxima at a wavelength of 400 nm or less and are sensitive to a laser beam with a wavelength of 450 nm or less, light absorbents and optical recording media which comprise the styryl dyes, and a proces... | 04/08/2008 |
| 7353528 | Optical recording medium and its manufacturing method A multi-layered film made of sequentially stacked first dielectric layer, recording layer, record-assist layer, second dielectric layer and first reflection layer on a disc substrate having a concavo-convex structure at least on one surface thereof. An ultraviolet-s... | 04/01/2008 |
| 7351461 | Articles comprising benzopyran colorants, method of manufacture, and method of use An article comprising the compound of Formula (I) wherein X is hydrogen or a radical of Formula (II), R1 independently at each occurrence is a C1-C20 aliphatic radical, a C3-C | 04/01/2008 |
| 7348125 | Optical information recording medium and novel immonium compound Disclosed is an optical information recording medium comprising a substrate having provided thereon a recording layer capable of recording information by laser beam irradiation, wherein the recording layer contains at least one compound represented by the following ... | 03/25/2008 |
| 7341820 | Optical information recording medium The present invention is an optical information recording medium comprising a substrate having disposed in an order thereon a recording layer, an interlayer, and a cover layer, wherein recording and reproduction are carried out by the irradiation with a laser light ... | 03/11/2008 |
| 7332261 | Phthalocyanine compound, process for preparing the same, and optical recording medium containing the same A phthalocyanine compound represented by the following general formula (I) and the mixture thereof, and an optical recording medium containing the compound/mixture in its recording layer. wherein in formula (I), ... | 02/19/2008 |
| 7331055 | Information recording and reproducing medium with areas for recording information optically on one side and recording visual information on another side A program area for the normal writing of information is provided on a first side of an information recording and reproducing medium, and a label area and a program area on which information can be written are provided on the opposing second side of the medium. A bib... | 02/12/2008 |
| 7316890 | Indolestyryl compound for use in recording media and method for fabrication thereof Indolestyryl compounds and use thereof for a high density recording media and method for fabricating the same. The indolestyryl compounds exhibit strong absorbance in the visible light region (400˜700 nm) of the spectrum, resistance to heat and light, high light se... | 01/08/2008 |
| 7316836 | Optical recording medium An optical recording medium comprises a transmission substrate and a recording layer formed on the transmission substrate, the recording layer containing at least a dye material expressed by a general formula shown at the following chemical formula (in the chemical ... | 01/08/2008 |
| 7282320 | Apparatus for three-dimensional optical data storage and retrieval A three dimensional optical data storage and retrieval system that includes a three dimensional optical data storage medium and an apparatus for providing access to data stored on the medium. The data storage medium includes an optical data storage material which ei... | 10/16/2007 |
| 7270864 | Optical information recording medium For improving the jitter property and ensuring the high reliability of an optical disk, a metal film containing phosphorus is disposed in a reflective layer. The layer has a hardness of 60 mgf/μm2 or more as nano indentation hardness, and an adhesive lay... | 09/18/2007 |
| 7247417 | Optical recording medium and optical recording/reproducing method The present invention provides an optical recording medium that includes a recording layer composed mainly of an organic compound and can utilize blue-violet semiconductor laser light (390 to 420 nm in wavelength) as recording/reproducing laser light. The present in... | 07/24/2007 |
