Patents Assigned to Nippon Oil Co., Ltd.
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Patent number: 5585365Abstract: An antiviral polysaccharide purified from an extract prepared by extracting Spirulina cells with hot water, having the following properties:(1) it comprises rhamnose, glucose, fructose, ribose, galactose, xylose, mannose, glucuronic acid and galacturonic acid;(2) it exhibits an absorption at 480 nm in phenolsulfuric acid reaction; and(3) it has a molecular weight of 250,000 to 300,000 Daltons as determined by gel filtration; and pharmaceuticals, food and feed, comprising said antiviral polysaccharide.Type: GrantFiled: July 8, 1994Date of Patent: December 17, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Toshimitsu Hayashi, Kyoko Hayashi, Ichiro Kojima
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Patent number: 5578373Abstract: The present invention provides a split polyethylene stretched material having a tensile strength of at least 0.7 GPa when twisted in the range of 50-500 times/m, which material is produced by subjecting a polyethylene having an intrinsic viscosity of 5-50 dl/g as measured at 135.degree. C. in decalin, i.e. an ultra-high-molecular-weight polyethylene to stretching and then subjecting the stretched polyethylene to splitting, as well as a process for producing said material. The split polyethylene stretched material according to the present invention has a large surface area and accordingly can be easily laminated to other materials, and has a high strength and flexibility.Type: GrantFiled: December 15, 1994Date of Patent: November 26, 1996Assignees: Nippon Oil Co., Ltd., Nippon Petrochemicals Co., Ltd., Polymer Processing Research Institute Ltd.Inventors: Seizo Kobayashi, Takashi Mizoe, Yoshimu Iwanami, Osamu Otsu, Shigeki Yokoyama, Kazuhiko Kurihara, Hiroshi Yazawa
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Patent number: 5569643Abstract: A grease composition for a constant velocity joint contains a base oil containing 2 to 25 wt. % of a thickener based on total weight of the composition, 0.5 to 20 wt. % of boron nitride powders based on total weight of the composition, and 0.1 to 10 wt. % of an extreme pressure agent based on total weight of the composition selected from the group consisting of molybdenum dithiocarbamate, a sulfur and phosphorus-containing extreme pressure agent, and mixtures thereof. The boron nitride powders have mean particle size of more than 5 .mu.m and not more tha 20 .mu.m.Type: GrantFiled: July 10, 1995Date of Patent: October 29, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Hirotugu Kinoshita, Souichi Nomura, Masaru Mishima
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Patent number: 5567342Abstract: An internal combustion engine lubricating oil composition adapted for used with a maintenance-free system of engine and having excellent properties including oxidation stability, resistance against sludge formation and ability to clean the engine. The composition is characterized in that it comprises ingredients (A) through (D) below as essential components on the basis of total amount of composition and the total base number of the composition is between 2.0 and 6.0 mgKOH/g: (A) a specific alkaline earth metal type cleaning agent, (B) zinc dialkyldithiophosphate expressed by a specific general formula (1), (C) a succinic acid imide type ashless dispersant and (D) a phenol type and/or amine type ashless antioxidant.Type: GrantFiled: June 2, 1995Date of Patent: October 22, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Kiyoshi Inoue, Masakuni Hirata
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Patent number: 5565357Abstract: A process for production of canthaxanthin comprising the steps of culturing a microorganism capable of producing canthaxanthin and belonging to the genus Corynebacterium, such as Corynebacterium sp. SQH 348 (FERM BP-4284), and recovering canthaxanthin from the culture.Type: GrantFiled: May 24, 1995Date of Patent: October 15, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Akira Tsubokura, Hisashi Yoneda, Mikihiro Takaki, Takashi Kiyota
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Patent number: 5563290Abstract: A method for preparing an optically active succinic acid compound involves hydrogenating an itaconic acid compound in the presence of a rhodium compound and a 2,2"-bis(1-(hydrocarbon residue-substituted) phosphine-substituted alkyl)-1,1"-biferrocene compound.Type: GrantFiled: December 30, 1994Date of Patent: October 8, 1996Assignee: Nippon Oil Co. Ltd.Inventor: Yoshihiko Ito
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Patent number: 5561026Abstract: A photosensitive material comprising a photosensitive-group-containing fullerene such as a photosensitive material which is obtained by adding a photosensitive group to fullerene and/or a photosensitive material which is obtained by combining the fullerene with a photosensitive agent is provided. The photosensitive material according to the present invention has excellent properties as a new resist which is a photosensitive material suitable as a photolithographic resist for the production of semiconductors utilizing such light source as ultraviolet light, deep ultraviolet light, X-ray or electron beam and which meets the requirements for realization of a higher level of resolution and sensitivity.Type: GrantFiled: June 21, 1993Date of Patent: October 1, 1996Assignee: Nippon Oil Co., Ltd.Inventor: Nobuo Aoki
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Patent number: 5561104Abstract: A hydraulic working oil composition for buffers which comprises a lubricating oil as a base oil, (A) a phosphoric acid ester such as dioleyl acid phosphate and/or a phosphorous acid ester such as dioleyl hydrogen phophite, and (B) an adduct of an aliphatic amine such as oleyl amine with an alkylene oxide such as ethylene oxide, the compounds (A) and (B) being the essential components added to said base oil; and, in one embodiment, a process for lubricating buffers which comprises adding said compounds (A) and (B) to said base oil to prepare a hydraulic working oil composition and using the thus prepared oil composition in buffers.Type: GrantFiled: July 6, 1995Date of Patent: October 1, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Toru Miyagawa, Shigeaki Hirata, Mitsuo Okada
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Patent number: 5552470Abstract: A thermoplastic elastomer composition is provided which is highly durable and free from oxidative deterioration when exposed to elevated temperature as in molding and also ambient temperature at which an end product thereof is used. These advantageous features are attributable to the use of a hydrogenated oil of the class disclosed which serves effectively to suppress the tendency of an elastomer undergoing gelation or cross-linking particularly when heated in the atmosphere. The hydrogenated oil is derivable from hydrogenation of a liquid product resulting from thermally treating a coal tar or distillates thereof at above 400.degree. C.; a liquid product resulting from thermally treating at above 400.degree. C. a petroleum crude oil, distillates thereof, or a liquid hydrocarbon derived from catalytic cracking, hydrogenative cracking or catalytic reforming of petroleum distillates; or a thermally cracked tar resulting from thermally cracking a petroleum crude oil or distillates thereof.Type: GrantFiled: November 28, 1994Date of Patent: September 3, 1996Assignee: Nippon Oil Co., Ltd.Inventor: Junichi Kubo
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Patent number: 5549838Abstract: A hydraulic working oil composition for buffers which comprises:a lubricating oil as a base oil,[I] at least one phosphorus-containing compound selected from the group consisting of a phosphoric acid having a specific structure and a phosphorous acid ester having a specific structure, and[II] at least one nitrogen-containing compound selected from the group consisting of an alkyleneoxide adduct of an aliphatic monoamine having a specific structure, an aliphatic polyamine having a specific structure and a salt of the above aliphatic polyamine having a specific structure, and[III] an aliphatic monoamine having a specific structure, the components [I] to [III] being essential components added to said base oil in a predetermined ratio; and a process for lubricating buffers with said hydraulic working oil composition.Type: GrantFiled: March 20, 1995Date of Patent: August 27, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Toru Miyagawa, Mitsuo Okada, Tomomasa Osumi
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Patent number: 5543081Abstract: A method of making a novel lubricant additive comprising a boric acid modified aminoamide compound is disclosed. A lubricating oil composition incorporating the modified aminoamide compound is also disclosed, which exhibits enhanced high-temperature cleanliness when used particularly for two stroke cycle engines.Type: GrantFiled: October 16, 1992Date of Patent: August 6, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Noboru Ishida, Mitsuaki Ishimaru, Mineo Kagaya
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Patent number: 5536423Abstract: A hydraulic working oil composition for buffers which comprises:a lubricating oil as a base oil,(A) at least one phosphorus-containing compound selected from the group consisting of a phosphoric acid ester having a specific structure, a phosphorous acid ester having a specific structure and a salt of-the phosphoric acid ester and/or the phosphorous acid ester with an aliphatic monoamine having 8-22 carbon atoms, and(B) at least one nitrogen-containing compound selected from the group consisting of an aliphatic polyamine having a specific structure and a salt of the aliphatic polyamine with an aliphatic acid having 6 carbon atoms, the compounds (A) and (B) being essential components added to said base oil.Type: GrantFiled: February 8, 1995Date of Patent: July 16, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Toru Miyagawa, Mitsuo Okada
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Patent number: 5536428Abstract: A homogeneous electro rheological fluid is provided. The fluid comprises a lyotropic liquid crystalline polymer dissolved in a solvent in low concentrations in a manner in which the fluid does not exhibit a liquid crystalline state. According to the homogeneous electro rheological fluid of the present invention, the problem associated with the precipitation of particles can be circumvented. Moreover, the electro rheological fluid can provide a large difference in torque before and after the application of an electric field; therefore, exhibits good electro theological properties. The electro rheological fluid according to the present invention can be used in making engine mounts, damping apparatuses, clutches, torque converters, braking systems, valves, dampers, suspensions, actuators, vibrators, ink jet printers, and the like.Type: GrantFiled: March 1, 1995Date of Patent: July 16, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Makoto Sasaki, Takafumi Ishii, Katsuhiko Haji
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Patent number: 5527648Abstract: A method for producing a color filter involves (a) forming a positive photosensitive coating film on a transparent electrically conductive layer of a transparent substrate; (b) forming on the photosensitive coating film a first region where a light irradiation amount is different in two steps; (c) developing a light-irradiated portion of the first region to lay-open the transparent conductive layer followed by electrodepositing a colored coating thereon to form a colored layer; (d) forming on the remaining photosensitive coating film a second region where a light irradiation amount is different in two steps; (e) developing a light-irradiated portion of the second region to lay-open the transparent conductive layer followed by electrodepositing a colored coating thereon to form a colored layer; (f) removing the remaining photosensitive coating film not developed in the steps (c) and (e); (g) forming a positive or negative photosensitive coating film on the transparent substrate; (h) forming on the photosensitiType: GrantFiled: December 9, 1994Date of Patent: June 18, 1996Assignees: Nippon Oil Co., Ltd., Dai Nippon Printing Co., Ltd.Inventors: Yutaka Otsuki, Hitoshi Yuasa, Hiroyoshi Omika, Masayuki Ando
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Patent number: 5527649Abstract: A method for preparing a substrate having a light-shielding layer involves forming a photosensitive coating film on a transparent electrically conductive layer formed on a transparent substrate, exposing the photosensitive coating film via a mask exhibiting light transmitting properties, removing and developing the coating film for exposing the transparent electrically conductive layer and electrodepositing a dark-hued coating on the exposed transparent electrically conductive layer for forming the light-shielding layer, and heating the light-shielding layer. The substrate having the light-shielding layer has a volume resistivity of 1.times.10.sup.2 ohm.multidot.cm or higher and may be used for a counterelectrode substrate for a TFT array substrate incorporated in a liquid crystal display device.Type: GrantFiled: May 26, 1994Date of Patent: June 18, 1996Assignees: Nippon Oil Co., Ltd., Dai Nippon Priting Co., Ltd.Inventors: Haruyoshi Sato, Toru Nakamura, Hitoshi Yuasa, Yutaka Otsuki, Hiroyoshi Omika, Norikatsu Ono, Tadafumi Shindo
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Patent number: 5523035Abstract: A process for producing a carbon/carbon composite having a ceramic and carbon coating on its surface consists essentially of the steps of heating a carbon/carbon composite at a temperature of from 800.degree. to 1,700.degree. C., contacting the thus heated composite in the presence of hydrogen with at least one compound selected from the group consisting of halides and hydrides of Si, Zr, Ti, Hf, B, Nb and W in gaseous form to convert the surface of the carbon/carbon composite, in the absence of a carbon releasing gas, into a carbide ceramic layer and then forming a coating film consisting of both carbon and ceramic by vapor phase decomposition at a pressure of 5-100 Torr on said carbide ceramic.Type: GrantFiled: September 15, 1993Date of Patent: June 4, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Yoshio Sohda, Yukinori Kude, Takefumi Kohno, Hiroshi Makino
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Patent number: 5520797Abstract: A process for the fluid catalytic cracking of heavy fraction oils containing heavy metals such as Ni and V, which comprises withdrawing a portion of ferrite-containing catalyst particles circulating in a fluid catalytic cracking apparatus, separating the thus withdrawn catalyst particles into metals-richly deposited catalyst particles and metals-poorly deposited ones by using a magnetic separator and then returning the metals-poorly deposited catalyst particles, together with fresh ferrite-containing catalyst particles, into said cracking apparatus.Type: GrantFiled: February 28, 1994Date of Patent: May 28, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Takashi Ino, Koichi Kato, Yasuo Nakatsuka
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Patent number: 5512188Abstract: A grease composition for a constant velocity joint involves a base oil containing a thickener and boron nitride powders and optionally an organozinc compound.Type: GrantFiled: August 11, 1995Date of Patent: April 30, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Hirotugu Kinoshita, Souichi Nomura, Masaru Mishima
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Patent number: 5512198Abstract: A refrigerator oil composition for a fluoroalkane refrigerant, which comprises a base oil composed principally of an oxygen-containing compound and, based on the total weight of the composition, 0.005-5.0 wt. % of a boron compound as an essential component.Type: GrantFiled: March 8, 1995Date of Patent: April 30, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Umekichi Sasaki, Motoshi Sunami, Hiroshi Hasegawa
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Patent number: 5510043Abstract: A lubricating oil additive comprising an alkaline earth metal salt of a sulfurized monoalkylcatechol as a main component represented by the following general formula (I): ##STR1## wherein Me represents an alkaline earth metal, R.sup.1 and R.sup.2 represent each an alkyl group having 14 to 30 carbon atoms, m is a number of from 1 to 2, which provides a lubricating oil additive excellent in anti-oxidant, friction-reducing and anti-abrasive properties at high temperature.Type: GrantFiled: May 17, 1994Date of Patent: April 23, 1996Assignee: Nippon Oil Co., Ltd. Central Technical Research LaboratoryInventor: Kiyoshi Inoue