Patents Assigned to Mitsubishi Kasei Corporation
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Patent number: 5350730Abstract: Disclosed herein is an image receiving sheet for dye transfer-type thermal transfer recording, comprising:a substrate, andan image receiving layer formed on the surface of said substrate, and composed of a resin having dyeing property and an aliphatic ester having 24 or more carbon atoms per one ester group, a hydrocarbon oil, a fatty acid ester of a polyhydric alcohol or a mixture thereof.Type: GrantFiled: April 15, 1992Date of Patent: September 27, 1994Assignee: Mitsubishi Kasei CorporationInventors: Takao Hirota, Katsuhiko Kuroda, Mamika Tamaki
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Patent number: 5350790Abstract: This invention provides a polycarbonate resin composition for optical use and an optical disc substrate manufactured therefrom. Polycarbonate resin is mixed with at least one kind of carboxylic acid selected from aliphatic carboxylic acids having 1 to 10 carbon atoms in which hydrogen atoms of aliphatic group may be substituted by hydroxyl groups; or aromatic carboxylic acids in which hydrogen atoms of the aromatic ring may be substituted by low alkyl groups, hydroxyl groups, or halogen atoms.The amount of the carboxylic acids is 5 to 1000 ppm based on the polycarbonate resin.Type: GrantFiled: April 1, 1993Date of Patent: September 27, 1994Assignee: Mitsubishi Kasei CorporationInventors: Yoshitomi Urabe, Hironori Hayashida, Yoshiaki Ohtani
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Patent number: 5351169Abstract: A lighting device capable of lighting a surface of an observed section of a specimen sample so as to permit an object of observation of the surface to be satisfied even when the surface has relatively fine unevenness. Any one of light field illumination mainly using vertically projected light, dark field illumination mainly using laterally projected light and a combination thereof is selectively carried out with respect to the surface of the specimen sample as desired, to thereby selectively provide a lighted two-dimensional image of the surface and its lighted three-dimensional image as desired.Type: GrantFiled: April 23, 1993Date of Patent: September 27, 1994Assignee: Mitsubishi Kasei CorporationInventors: Seiji Ishikawa, Hajime Murakami
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Patent number: 5350915Abstract: An image sensor uses an image reading element formed by integrating pixels for converting image information to an electric signal. In each of the pixels, a common electrode common to all the pixels and an individual electrode corresponding to each of the pixels are disposed through at least an organic photoconductive layer. A crosstalk capacitance of each of the pixels is equal to or smaller than 35% of a sum of an electric capacitance between individual electrodes and an output capacitance of the individual electrode. A blocking layer may be disposed between the common and individual electrodes. Each of the pixels may be constructed such that the individual electrode is arranged on a supporting body, and a blocking layer and the photoconductive layer are formed on the individual electrode, and the common electrode is arranged on the blocking and photoconductive layers.Type: GrantFiled: June 17, 1993Date of Patent: September 27, 1994Assignees: Mitsubishi Kasei Corporation, Mitsubishi Electric CorporationInventors: Kei Ishihara, Kiyoshi Matsuda, Atsushi Tamaki, Masatoshi Katoh, Tadahiko Hamaguchi, Takashi Takeda
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Patent number: 5350782Abstract: A dental filling composition comprising a polymerizable monomer and an inorganic filler, characterized in that the inorganic filler comprises (A) 20 to 80% by weight of spherical inorganic oxide particles with an average particle size of from 1.0 to 5.0 .mu.m, and (B) 80 to 20% by weight of spherical inorganic oxide particles which have a particle size range of at least 0.05 .mu.m and less than 1.0 .mu.m and at least 5% by weight of which is in a particle size range of from 0.05 to 0.2 .mu.m. The dental filling composition may have a high content of the inorganic filler and, upon curing, has good mechanical strength, good surface glass and smoothness, low water absorption, and transparency compared to that of natural teeth, in which smaller particles are sufficiently packed in interstices among larger particles, and smaller particles serve also for the good transparency.Type: GrantFiled: September 4, 1992Date of Patent: September 27, 1994Assignees: Kanebo, Ltd., Mitsubishi Kasei CorporationInventors: Hiroyuki Sasaki, Tetsuro Ota, Eiji Hattori, Michihiro Ikeda
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Patent number: 5350523Abstract: An anion exchange method conducted at a high temperature, which comprises using a crosslinked anion exchanger which comprises structural units having a quaternary ammonium group of the following formula (a) and structural units derived from an unsaturated hydrocarbon group-containing crosslinkable monomer, and of which at least 90% of anion exchange groups are present in the form of a group represented by ##STR1## as defined in the following formula (a): ##STR2## wherein R is a --(CH.sub.2).sub.n --group (n=an integer of from 3 to 18) which may include a cyclic hydrocarbon, each of R.sub.1, R.sub.2 and R.sub.3 which are independent from one another, is a C.sub.1 -C.sub.8 hydrocarbon group or a C.sub.1 -C.sub.8 alkanol group, the benzene ring of the formula (a) may be substituted by an alkyl group or a halogen atom, or may be condensed with other aromatic ring, and X is an anion.Type: GrantFiled: August 28, 1992Date of Patent: September 27, 1994Assignees: Mitsubishi Kasei Corporation, Tohoku Electric Power Co., Inc.Inventors: Masao Tomoi, Atsuo Kiyokawa, Hiromasa Ogawa, Teruo Onozuka, Tsuyoshi Ito
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Patent number: 5348719Abstract: A process for producing carbon fibers having high strand strength, which comprises subjecting pitch fibers obtained by melt-spinning pitch, followed by gathering, to infusible treatment to obtain infusible fibers, followed by carbonization treatment, and if necessary, graphitization treatment, to obtain carbon fibers, wherein the infusible fibers or the carbon fibers are heat-treated in an atmosphere containing steam or carbon dioxide at a temperature of from 500.degree. to 1,800.degree. C.Type: GrantFiled: November 21, 1991Date of Patent: September 20, 1994Assignee: Mitsubishi Kasei CorporationInventors: Iwao Yamamoto, Akihiko Yoshiya, Akira Nakagoshi
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Patent number: 5346752Abstract: A heat-resistant moistureproof film having a first layer (A), a second layer (B) bonded to one side of the first layer, and a third layer (C) bonded to the other side of the first layer. The first layer (A) is a single or a laminate of a transparent laminated film having a base film composed of PVA having a saponification degree of not less than 99 mol % and a transparent silicon oxide thin film (SO thin film) 2 formed on at least one side thereof. The second layer (B) is a single or a laminate of a transparent plastic film other than a PVA film, having at least one layer of the plastic film with a transparent SO thin film 4 having a thickness of 100 to 5000 .ANG. formed on at least one side thereof, and at least one layer of a transparent heat-resistant film having the sum of the absolute values of the percentages of heat-shrinkage in the machine direction and transverse direction when heated at 150.degree. C. for 30 minutes, of not more than 1% and a light transmittance of not less than 85% by ASTM D-1003.Type: GrantFiled: July 29, 1992Date of Patent: September 13, 1994Assignee: Mitsubishi Kasei CorporationInventors: Tsutomu Sawada, Shinichi Ohashi, Shigenobu Yoshida
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Patent number: 5341577Abstract: Carbon black is introduced into a granulating machine 3 through an inlet 1 and water is introduced into the same through an inlet 2 to prepare granulated carbon black, which is fed to a cylindrical rotary type dryer 5 through a line 4 and is dried. A product of carbon black is discharged through a line 6. Temperature in the dryer 5 is measured by a plurality of thermometers 10. A combustion control device performs the arithmetical processing of temperature data to obtain the initial point at which the state of the carbon black is changed from the constant rate of drying to the falling rate of drying. The control device controls each flow rate of fuel supplied from each line 7 or 8 to burners 9 for the front and rear half portions of the dryer by using the critical point and the temperature of the carbon black at the outlet of the dryer, whereby a temperature profile for the carbon black in the dryer 5 can be made stable for a long time.Type: GrantFiled: July 21, 1993Date of Patent: August 30, 1994Assignee: Mitsubishi Kasei CorporationInventors: Iori Hashimoto, Motoki Numata, Jun Nishizawa, Tomiyuki Kamada
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Patent number: 5340911Abstract: A method for producing a liquid crystalline polyester, which comprises reacting compounds of the following formulas: ##STR1## and a dicarboxylic acid of the following formula ##STR2## wherein R.sup.1 is a bivalent aromatic hydrocarbon group having from 6 to 18 C atoms as starting material, for polycondensation in a molten state.Type: GrantFiled: October 20, 1993Date of Patent: August 23, 1994Assignee: Mitsubishi Kasei CorporationInventors: Osamu Kishiro, Rie Shirahama, Yasuyuki Sakata, Hideaki Tanaka, Ken Honma
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Patent number: 5338633Abstract: An electrophotographic photoreceptor comprising an electrically conductive substrate and a photoconductive layer formed thereon, wherein said photoconductive layer contains a compound of the formula ( I ): ##STR1## wherein R.sup.1 to R.sup.18 are respectively and independently a hydrogen atom, a halogen atom, a saturated or unsaturated aliphatic hydrocarbon group, an aromatic hydrocarbon group, an alkoxy group, an aryloxy group, a dialkylamino group or a diarylamino group, wherein the aliphatic hydrocarbon group, the aromatic hydrocarbon group, the alkoxy group, the aryloxy group, the dialkylamino group and the diarylamino group may have substituents, X is a bivalent hydrocarbon group which may have substituents, each of A.sup.1 and A.sup.2 is a saturated or unsaturated aliphatic hydrocarbon group or an aromatic hydrocarbon group, or is bonded to R.sup.5 or R.sup.Type: GrantFiled: May 22, 1992Date of Patent: August 16, 1994Assignee: Mitsubishi Kasei CorporationInventors: Mamoru Nozomi, Sumiko Watabe, Ryoko Aso
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Patent number: 5338643Abstract: Disclosed herein is a photosensitive composition comprising:(A) 5 to 60 wt % of an o-quinonediazide compound;(B) 0.05 to 10 wt % of an s-triazine compound(C) 0.01 to 10 wt % of a dye for changing the color tone by the interaction with the photodecomposition product of the said s-triazine compound;(D) 30 to 90 wt % of a novolak resin containing less than 5 wt % of phenols; and(E) 1 to 60 wt % of a vinyl-based polymer having at least a phenolic hydroxyl group.Type: GrantFiled: December 23, 1992Date of Patent: August 16, 1994Assignees: Mitsubishi Kasei Corporation, Konica CorporationInventors: Daisuke Kanazawa, Mitsuru Sasaki, Toshiyuki Urano, Youko Yamashita, Shinichi Matsubara
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Patent number: 5334856Abstract: An image readout device having a plurality of readout elements for converting image into electrical signals, each element having a photoconductive layer and a pair of electrodes which contact the photoconductive layer, and between which the layer is disposed. The photoconductive layer contains a charge generation material and a charge transport material. Oxytitanium phthalocyanine is used as the charge generation material.Type: GrantFiled: July 28, 1993Date of Patent: August 2, 1994Assignee: Mitsubishi Kasei CorporationInventors: Shigenori Otsuka, Hiromi Horiuchi, Masayuki Hiroi
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Patent number: 5334916Abstract: An emission spectrum controlling apparatus and method for an LED are disclosed. A temperature measurement device is provided for measuring the temperature of a light emitting diode or the temperature in the surrounding environment of the light emitting diode. A driving power control device is also provided for controlling the driving power of the LED, and a computing unit is disclosed which controls the driving power control device based on the temperature information from the temperature measuring device and the driving power information from the driving power control device.Type: GrantFiled: May 27, 1992Date of Patent: August 2, 1994Assignee: Mitsubishi Kasei CorporationInventor: Masahiro Noguchi
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Patent number: 5332833Abstract: The .beta.-oxo-.beta.-benzenepropanethioamide derivative of the present invention has potassium channel opening action and is useful for treatment of hypertension, asthma, hypersensitive colon syndrome, and enteritis through pharmacological actions including blood vessel dilation, bronchial tract dilation, relaxation of gastrointestinal tract smooth muscle, and the like. The present invention also includes a pharmaceutical composition containing, as the active ingredient, the compound of the present invention and a method for producing the same.Type: GrantFiled: December 23, 1992Date of Patent: July 26, 1994Assignee: Mitsubishi Kasei CorporationInventors: Tetsuo Sekiya, Mikio Tsutsui, Tetsuro Shimpuku, Tatsuo Nagano, Junko Hayashi, Asami Seino
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Patent number: 5332712Abstract: An image receiving sheet for thermal transfer recording is described. The sheet contains a substrate and an image receiving layer formed thereon for receiving a sublimable dye. The image receiving layer contains, as its main component, a product formed by thermosetting a composition of an active hydrogen-containing resin, a modified silicone resin, a silicone oil and a polyfunctional isocyanate compound.Type: GrantFiled: February 12, 1993Date of Patent: July 26, 1994Assignee: Mitsubishi Kasei CorporationInventors: Hideo Shinohara, Yukichi Murata, Tsutomu Taki
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Patent number: 5330542Abstract: A dye-incorporated composition which comprises a cyanine type dye and an azo metal chelate compound comprising an azo type compound of the following formula (I): ##STR1## (wherein A is a residue forming a hetero ring together with the carbon atom and the nitrogen atom to which it is bonded, B is a residue forming an aromatic ring or a hetero ring together with the two carbon atoms to which it is bonded, and X is a group having an active hydrogen), and a metal, and an optical recording medium comprising a recording layer which contains the dye-incorporated composition.Type: GrantFiled: January 24, 1992Date of Patent: July 19, 1994Assignee: Mitsubishi Kasei CorporationInventors: Shuichi Maeda, Satoru Imamura, Kazuo Mitsuhashi, Takako Tsukahara
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Patent number: 5330824Abstract: An image protecting film useful for protecting an image recorded on a porous recording medium by an ink jet recording system, which film comprises a light transmitting non-porous support and a layer composed mainly of a polyester resin formed on the support, said polyester resin being a copolymer comprising aliphatic dicarboxylic acid units, aromatic dicarboxylic acid units and aliphatic polyol units. Also disclosed is an image protecting method which comprises overlaying the above image protecting film on a porous recording medium having an image recorded thereon, so that the layer composed mainly of the polyester resin is in contact with the recording medium, followed by hot press bonding. The image protected by the image protecting film and the image protecting method of the present invention is excellent in the light resistance, the water resistance and the color development.Type: GrantFiled: September 25, 1992Date of Patent: July 19, 1994Assignee: Mitsubishi Kasei CorporationInventors: Hiroshi Takimoto, Minoru Masuda
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Patent number: RE34713Abstract: .[.Disclosed herein is a vinylamine copolymer having the structural units represented by the following formulas (I), (II), (III), (IV) and (V): ##STR1## wherein X.sup..crclbar. represents an anion or hydroxyl ion, R represents a hydrogen atom or a methyl group, M.sup..sym. represents a hydrogen ion or a monovalent cation, in which the molar fraction of the structural unit (I) is 5 to 85% by mole, the molar fraction of the structural unit (II) is 2 to 85% by mole, the molar fraction of the structural unit (III) is 5 to 80% by mole, the molar fraction of the structural unit (IV) is 0 to 40% by mole, all of said molar fractions being based on the vinylamine copolymer and the molar fraction of the structural unit (V) is 0 to 8% by mole which is based on the total content of the structural units (III), (IV) and (V), a flocculating agent and a paper strength increasing agent using the vinylamine copolymer, and a process for producing the vinylamine copolymer..]..Iadd.Type: GrantFiled: September 16, 1992Date of Patent: August 30, 1994Assignee: Mitsubishi Kasei CorporationInventors: Takaharu Itagaki, Mitsuaki Shiraga, Shigeru Sawayama, Kohichi Satoh
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Patent number: RE34737Abstract: A dye transfer sheet for heat-sensitive transfer recording which has an ink layer containing a sublimable dye formed on a base film, said sublimable dye being of the formula: ##STR1## wherein --B represents ##STR2## --Z.sup.1 and --Z.sup.2 each represents hydrogen, alkyl optionally substituted by fluorine, alkoxy, halogen or --NHB, K represents ##STR3## --R.sup.1, --R.sup.2, --R.sup.6 and --R.sup.7 each represents hydrogen, C.sub.1 -C.sub.8 substituted or unsubstituted alkyl, substituted or unsubstituted vinyl, allyl or aryl, --R.sup.3, --R.sup.4 and --R.sup.5 each represents hydrogen or methyl, --X represents hydrogen, alkyl optionally substituted by fluorine, alkoxy, formylamino, alkylcarbonylamino optionally substituted by fluorine, arylcarbonylamino or halogen, and --Y represents hydrogen, alkyl optionally substituted by fluorine, alkoxy or halogen.Type: GrantFiled: May 8, 1991Date of Patent: September 20, 1994Assignees: Mitsubishi Kasei Corporation, Matsushita Electric Industrial Co., Ltd.Inventors: Toshio Niwa, Yukichi Murata, Shuichi Maeda