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| Number | Title | Issue Date |
| 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 |
| 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 |
| 7270882 | Weatherable multilayer articles and method for their preparation Disclosed are weatherable multilayer articles comprising (i) a coating layer comprising a block copolyestercarbonate comprising structural units derived from at least one 1,3-dihydroxybenzene and at least one aromatic dicarboxylic acid, (ii) a second layer comprisin... | 09/18/2007 |
| 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 |
| 7112359 | Method and apparatus for multilayer optical articles The present invention provides a method and apparatus for a multilayer optical articles. A method comprises forming a first multilayer article with a first substrate and a second substrate with a first adherent disposed between the first and second substrate. A firs... | 09/26/2006 |
| 7078084 | Optical information recording medium transparent sheet, process for producing the same, and optical information recording medium The present invention provides a process for producing an optical information recording medium transparent sheet, including applying a radiation-curable resin coating solution continuously to one surface of a cover film wound in a roll form, followed by continuously... | 07/18/2006 |
| 7052756 | Adhesive for optical disk and optical disk The present invention provides an adhesive that can provide an excellent durability (reliability) to a bonded optical disk having a translucent reflection film comprising silicone, silver or a silver alloy. The adhesive of the present invention contains a (meth)acry... | 05/30/2006 |
| 7011877 | Method for treating an optical disc layer to improve adhesion properties A method of improving the ability of plastic layers of a multi-layered optical disc to bond to adhesive materials includes exposing the plastic layers to a plurality of ions. In one embodiment, one side of a plastic layer of a multi-layered optical disc is exposed t... | 03/14/2006 |
| 7005174 | Optical recording medium-producing sheet and optical recording medium An optical disc-producing sheet 1, which has an adhesive layer 11 having a specific heat capacity after curing of not more than 1.9 J/g·° C. at 80° C. and a protective sheet 12, is laminated onto an information recording layer 3 (a lam... | 02/28/2006 |
| 6994900 | Optical disk and method for manufacturing disk substrate for optical disk To improve a bad appearance due to an interconnection between a pair of disk substrates (20, 30) which are bonded with annular grooves (25, 35) being opposed to each other by a simple structure and at a low cost, which have annular grooves (25, 35 | 02/07/2006 |
| 6972143 | Protective U.V. curable cover layer for optical media The invention relates to a protective U.V. curable or photoimageable cover layer for an optical disk substrate and a method of applying the protective cover layer to an optical substrate. The U.V. curable or photoimageable layer is applied as a dry film and has high... | 12/06/2005 |
| 6971428 | Device for vacuum-pressing of DVD substrates The invention relates to a device for vacuum-pressing of disk-shaped substrates, in particular DVD substrates into a finished DVD, wherein the device has a vacuum chamber with two substrate holders and an intermediate element that can be displaced inside the vacuum ... | 12/06/2005 |
| 6953514 | Method and device for assembling substrates A method and apparatus for joining at least two substrates together, especially to form an optical data carrier, are provided. Substrates are disposed in a spaced-apart manner between two plates that are disposed opposite from, and are movable relative to, one anoth... | 10/11/2005 |
| 6908725 | Double-sided hybrid optical disk with surface topology An optical disk has a multi-layer tuned optical coating overlying both small bumps to store pre-recorded information and lands onto which information is written to and read. The optical coating includes a phase-change metal/alloy layer formed over the disk substrate... | 06/21/2005 |
| 6887548 | Optical information recording medium An optical information recording medium includes a substrate having a thickness of approximately 1.0 mm to 1.2 mm, with a spiral pre-groove being formed at a predetermined area on the substrate excluding a central hole and an outer periphery. Successively disposed o... | 05/03/2005 |
| 6884315 | Method for bonding DVD layers A method for bonding DVD layers which comprises EB bonding at least two layers of a DVD with an EB curable adhesive composition which consists essentially of at least one epoxy resin and at least one aryl iodonium salt (cationic) photoinitiator and DVDs produced by ... | 04/26/2005 |
| 6855389 | Photopolymerizable resin compositions for optical recording media and optical recording media The present invention relates to photopolymerizable resin composition inducing substantially no chemical degradation in metals in tight contract with the resin. Further, the present invention relates to optical recording media using the photopolymerizable resins. In... | 02/15/2005 |
| 6852773 | Photocurable resin composition and optical parts The invention relates to a photocurable resin composition comprising: (A) a di or more functional urethane (meth)acrylate compound; (B) a monofunctional (meth)acrylate; (C) a photoinitiator; and (D) a polyoxyalkylene alkyl ether phosphate represented by the followin... | 02/08/2005 |
| 6833053 | Thin film bonding method and optical disk bonding method and apparatus using the same A thin film bonding method for bonding a thin film to an target surface by using an adhesive agent includes the steps of: applying the adhesive agent on the target surface and mounting the thin film on the adhesive agent; applying a a fluid pressure on the target su... | 12/21/2004 |
| 6818089 | Attachment method for disc protective sheet An attachment apparatus and method for attaching a disc protective sheet to at least one half of a magnetic disc cartridge body include a supporting mechanism that supports each half body section of the cartridge body. The apparatus and method also include a supply ... | 11/16/2004 |
| 6815035 | Polycarbonate articles and adhesive composition therefor An article is disclosed that includes: a) a first polycarbonate substrate; b) a second polycarbonate substrate; and c) an adhesive composition disposed between the first polycarbonate substrate and... | 11/09/2004 |
| 6767424 | Hot-melt adhesive for glueing DVDs The present invention relates to a process for preparing a digital versatile disc. The process of the present invention includes providing a hot melt adhesive containing at least one thermoplastic elastomer, at least one hydrocarbon resin, at least one poly-α-olefi... | 07/27/2004 |
| 6740607 | Substrate with stretch and heat sealing properties to make a multidirectional restraint module design The invention is directed to coating a plurality of polyurethane films onto a stretchable knit fabric substrate and heat sealing such substrates together to yield an air curtain or air bag having improved air-holding properties. ... | 05/25/2004 |
| 6737144 | 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 surface; a... | 05/18/2004 |
| 6726973 | Two sided graphical image DVDs and methods for making same Methods for forming a single-side-readable DVD having graphical information viewable from the DVD's frontside disc are provided. A first, frontside disc having a first and a second surface, with the second surface comprising program information and coated with a sem... | 04/27/2004 |
| 6663935 | Disk-like multilayer information recording medium and production method thereof The present invention relates to a multi-layered disc-shaped information recording medium having a plurality of signal recording layers each carrying information signals. In preparing the recording medium, a first substrate obtained on punching a sheet ob... | 12/16/2003 |
| 6645596 | Optical disk and ultraviolet-curing composition for optical disk An object is to provide a technique of imparting durability which is equal to that of existing types of DVD-5 and DVD-10 as well as DVD-9 using gold or a silicon based compound as a semitransparent film, to a DVD obtained by bonding two substrates having ... | 11/11/2003 |
| 6645595 | Optical medium An optical disk contains a recording layer and an adhesive layer between at least two substrates, wherein the adhesive layer contains a cationic polymerizable resin (A), a photo-initiator (B), and an anion catcher (C). The weight ratio of the photo-initia... | 11/11/2003 |
| 6632500 | Laminated disc and information recording disc A laminated disc composed of at least two supporting discs superposed upon another, each of the supporting discs having a thickness of 0.01 to 1 mm and being made of a vinyl alicyclic hydrocarbon polymer. This laminated disc is used as an optical disc inc... | 10/14/2003 |
| 6627287 | Optical disc and process for producing optical disc In order to provide an adhesive composition which can bond a substrate having a reflecting layer made of a silicon compound to which adhesion of conventional ultraviolet curable compositions is insufficient, an ultraviolet curable composition is provided ... | 09/30/2003 |
| 6599602 | Polycarbonate articles and adhesive composition therefor An article is disclosed that includes a) a first polycarbonate substrate; b) a second polycarbonate substrate; and c) an adhesive composition disposed between the first polycarbonate substrate and the second polycarbonate substrate such that the first pol... | 07/29/2003 |
| 6573025 | Optical disc An optical disc used with an optical head with a focus depth of about 2 micron meter minimizes defects and deterioration in the optical disc at the time of manufacture, during operation and storage thereof as well. The optical disc includes a pair of tran... | 06/03/2003 |
| 6511729 | Optical information medium and making method An optical information medium includes a support substrate (20) having an information recording layer (4) on one surface, and a light transmissive layer (2) thereon, wherein writing and/or reading light enters the information recording layer (4) through t... | 01/28/2003 |
| 6500513 | Adhesive composition and optical disk using the composition The invention provides a two-part adhesive composition making it possible to mutually bond disk substrates within a relatively short time and to produce an optical disk, and an optical disk having a metal film, corrosion of which is restricted under a hig... | 12/31/2002 |
| 6500295 | Laminate making method A hot-melt web has a buffer adhesive layer of a thermosetting resin on a light transmissive, heat resistant resin support. The hot-melt web has the advantages of light transparency, heat resistance, weather resistance, controlled entrainment of bubbles an... | 12/31/2002 |
| 6495232 | Compact disk with removable center plug A compact digital disk assembly having a label which extends over substantially all of the upper surface of the disk, thereby facilitating the display of artistic and textual information uninterrupted by a center cutout normally found on compact disks. Th... | 12/17/2002 |
| 6465151 | Method of manufacturing optical discs The object of the present invention is to provide an optical disc and a method of manufacturing thereof wherein defects and deterioration in the optical disc are minimized at the time of manufacture, during operation and storage thereof as well. The inven... | 10/15/2002 |
| 6455121 | Cationic and hybrid radiation-curable adhesives for bonding of optical discs Cationic and hybrid radiation-curable pressure sensitive adhesive compositions for digital versatile discs and other substrates, a method for bonding versatile digital disc layers together with a cationic or hybrid radiation-curable pressure sensitive adh... | 09/24/2002 |
| 6447867 | Epoxy resin composition and optical information recording medium using the same An epoxy resin composition according to the present invention is one initiating cationic polymerization upon irradiation with energy rays. The epoxy resin composition is formed of at least bisphenol type epoxy resin (A) as an active ingredient, epoxy resi... | 09/10/2002 |
| 6444285 | Ultraviolet-curing composition, optical disk, and method of producing optical disk To obtain a digital video disc having excellent durability in a high temperature and high humidity environment, an ultraviolet curable composition prepared such that water in which the cured coating film has been immersed has a specific conductivity of 10... | 09/03/2002 |
