| Patent Number |
Title Of Patent |
Date Issued |
| RE38979 |
Optical information recording medium and composition for optical information recording film |
February 14, 2006 |
| An optical information recording medium is here disclosed which comprises a transparent substrate, a recording layer comprising an organic dyestuff on which information can be written by a laser beam, a reflective layer and a protective layer formed in this order on the substrate, the |
| 7045266 |
Lithographic printing plate |
May 16, 2006 |
| A lithographic printing original plate, a lithographic printing plate using the lithographic printing original plate and a process for producing the lithographic printing plate are disclosed. The lithographic printing original plate has, on a substrate, a photosensitive layer made of |
| 5876820 |
Optical information recording medium and composition for optical information recording film |
March 2, 1999 |
| An optical information recording medium is here disclosed which comprises a transparent substrate, a recording layer comprising an organic dyestuff on which information can be written by a laser beam, a reflective layer and a protective layer formed in this order on the substrate, the af |
| 5696758 |
Optical recording media |
December 9, 1997 |
| Provided is an optical recording medium in which per-pits in a ROM area have a depth of 250 nm or more and 350 nm or less; pre-grooves between the pre-pits have a depth of 30 nm or more and 170 nm or less; wobbling tracks have an amplitude of 25 nm or more and 110 nm or less; the product |
| 5658707 |
Optical recording media |
August 19, 1997 |
| An optical recording medium has a recording layer, a reflective layer and a protective layer, all of which are arranged on a substrate. The recording layer contains a porphyrin compound represented by the following formula (1): ##STR1## wherein R.sub.1 to R.sub.8 independently re |
| 5633106 |
Optical recording media and a method of recording and reproducing information |
May 27, 1997 |
| There is provided with an optical recording medium comprising at least a dye-containing recording layer and a reflective layer laminated on a transparent substrate in this order which has a reflectance of 65% or higher, measured through the substrate, to a light beam having a selected |
| 5573831 |
Optical recording medium |
November 12, 1996 |
| An optical recording medium comprising a transparent substrate; a recording layer on the transparent substrate; a metal reflective layer; and one or more protective layers. These layers are laminated successively on the transparent substrate. The outermost protective layer is formed of a |
| 5492744 |
Optical information recording medium and composition for optical information recording film |
February 20, 1996 |
| An optical information recording medium is here disclosed which comprises a transparent substrate, a recording layer comprising an organic dyestuff on which information can be written by a laser beam, a reflective layer and a protective layer formed in this order on the substrate, the af |
| 5486396 |
Optical recording medium and production thereof |
January 23, 1996 |
| An optical recording medium comprises a substrate, a recording layer overlying the substrate in a manner such that it is not present at the inner and outer peripheral portions of the substrate, a metal reflective layer overlying the recording layer in a manner such that the inner per |
| 5424102 |
Optical recording medium and production thereof |
June 13, 1995 |
| An optical recording medium comprises a substrate, a recording layer overlying the substrate in a manner such that it is not present at the inner and outer peripheral portions of the substrate, a metal reflective layer overlying the recording layer in a manner such that the inner per |
| 5422226 |
Optical recording medium |
June 6, 1995 |
| An optical recording medium comprises a transparent substrate, a recording layer containing at least one organic dye overlying the substrate, a metallic layer directly contacting and overlying the recording layer, a protective layer comprising at least one layer directly contacting and |
| 5391461 |
Optical recording medium and recording method |
February 21, 1995 |
| An optical recording medium for pit length recording with excellent error rate and jitter value which has a transparent injection molded resin substrate, a recording layer containing a phthalocyanine dye of formula (1) overlying the substrate and a covering layer overlying the recording |
| 5344682 |
Optical recording medium |
September 6, 1994 |
| An optical recording medium of a single plate type comprises a substrate having a groove, a recording layer containing a dye overlying the substrate, a reflective layer overlying the recording layer and a protective layer overlying the reflective layer, wherein the recording layer is |
| 5196231 |
Optical recording media |
March 23, 1993 |
| Disclosed are optical recording media, each of which is composed of a substrate and a recording layer formed on the substrate. The recording layer includes an organic-dye-containing layer and an organopolysiloxane resin layer formed by the condensation of a trifunctional silane repre |
| 5132153 |
Optical recording media |
July 21, 1992 |
| Disclosed are optical recording media, each of which is composed of a substrate and a recording layer formed on the substrate. The recording layer includes an organic-dye-containing layer and an organopolysiloxane resin layer formed by the condensation of a trifunctional silane repre |
| 4977064 |
Optical recording medium and process for fabricating the same |
December 11, 1990 |
| This invention relates to an optical recording medium characterized by high sensitivity, high stability, etc, and a process for making the optical recording medium. Specifically, the present invention provides an optical recording medium composed of a transparent substrate having prepits |
| 4859569 |
Optical recording medium |
August 22, 1989 |
| An optical recording medium comprising practically a naphthalocyanine dye represented by the following general formula (I): ##STR1## wherein M means a metal, metal oxide or metal halide, and --OR.sub.1, --OR.sub.2, --OR.sub.3 and --OR.sub.4 are the same or different and denote et |
| 4798781 |
Fabrication process of optical recording medium |
January 17, 1989 |
| Disclosed herein is a fabrication process of an optical recording medium permitting writing and reading-out of signals without any reflective layer. The medium is fabricated by coating, on a transparent thermoplastic resin substrate havnig pregrooves and pits or holes for preformatting |
| 4770975 |
Optical recording medium |
September 13, 1988 |
| Disclosed herein is an optical recording medium permitting recording and reading-out of signals without any reflective layer. The optical recording medium comprises a transparent substrate and an optical recording layer provided directly on the substrate. The recording layer contains at |
| 4766054 |
Optical recording medium |
August 23, 1988 |
| Disclosed herein is an optical recording medium permitting recording and reading-out of signals without any reflective layer. The optical recording medium comprises a transparent substrate and an optical recording layer provided directly on the substrate. The recording layer contains at |
| 4719613 |
Optical recording medium having a reflective recording layer including a resinous binder and a n |
January 12, 1988 |
| An optical recording medium comprising practically a naphthalocyanine dye represented by the following general formula (I): ##STR1## wherein M means a metal, metal oxide or metal halide, and --OR.sub.1, --OR.sub.2, --OR.sub.3 and --OR.sub.4 are the same or different and denote et |
| 4707430 |
Optical recording medium |
November 17, 1987 |
| Disclosed herein is an optical recording medium which includes a recording layer composed of (a) an organometallic complex having an absorption maximum in the wavelength range of 600-1200 nm, (b) a resinous binder and (c) a sensitizer capable of generating radicals upon exposure to u |
| 4694052 |
Radiation-curable coating composition |
September 15, 1987 |
| Disclosed herein is a coating composition which contains a urethane-modified (meth)acrylate compound and a mono(meth)acrylate and is curable upon its exposure to radiation. Also disclosed herein is a coating, especially, a primary coating for an optical fiber, which coating or claddi |
| 4387115 |
Composition for conductive cured product |
June 7, 1983 |
| Conductive cured products which have superior initial conductivity which is substantially retained even under high temperature and humidity conditions are obtained by curing a resinous composition comprising (a) a metallic copper powder, (b) a copper compound, (c) a compound having a |
