Patents by Inventor Motoharu Ishikawa
Motoharu Ishikawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20100218740Abstract: A lubricating oil composition is used in an internal combustion engine that uses a fuel containing at least one fat and oil selected from a group consisting of natural fat and oil, hydrotreated natural fat and oil, transesterified natural fat and oil and hydrotreated transesterified natural fat and oil. A polyol ester having a kinematic viscosity in the range of 3 to 8 mm2/s at 100 degrees C and/or a polybasic acid ester having a kinematic viscosity in the range of 3 to 8 mm2/s at 100 degrees C is mixed in an amount in the range of 5 to 30 mass % of a total amount of the lubricating oil composition as a base oil of lubricating oil.Type: ApplicationFiled: October 17, 2008Publication date: September 2, 2010Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Kazuhiro Teshima, Motoharu Ishikawa
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Publication number: 20100126461Abstract: The lubricating oil composition contains a base oil, a phosphate ester derivative represented by a formula (1) below and a zinc compound. An element ratio (Zn/P) between zinc (Zn) and phosphorus (P) in the lubricating oil composition is 0.55 or more at a mole ratio. In the formula, Y represents S (sulfur) or O (oxygen); R1 represents an organic group having 4 to 24 carbon atoms; R2 represents a divalent organic group having 1 to 6 carbon atoms; and n represents an integer of 1 to 3.Type: ApplicationFiled: April 25, 2008Publication date: May 27, 2010Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Hirotaka Yamasaki, Motoharu Ishikawa
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Publication number: 20090312208Abstract: A lubricating oil composition for internal combustion engines which comprises a base oil comprising mineral oils and/or synthetic oils and polyisobutylene having a weight-average molecular weight of 500,000 or higher. Consumption of the engine oil can be decreased by using the above composition. In particular, consumption of the engine oil can be decreased even when the above composition is used as the engine oil of the energy saving type using a base oil having a low viscosity.Type: ApplicationFiled: March 29, 2007Publication date: December 17, 2009Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Motoharu Ishikawa, Masahiko Kido
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Publication number: 20080161215Abstract: An additive for lubricants exhibiting high oxidation stability, high thermal stability, and high Nox resistance, and having excellent functions as an extreme-pressure additive or wear-resistant agent and a lubricant composition containing the additive are provided The present invention provides an additive for lubricants comprising a phosphate ester derivative represented by the general formula [I]: wherein Y represents sulfur (S) or oxygen (O); R1 represents a monovalent organic group having 4 to 24 carbon atoms; R2 represents a divalent organic group having 1 to 6 carbon atoms; and n represents an integer of 1 to 3. The present invention also provides a lubricant composition containing the derivative.Type: ApplicationFiled: August 25, 2005Publication date: July 3, 2008Applicant: Idemitsu Kosan Co., Ltd.Inventors: Hiroaki Koshima, Shinya Iizuka, Motoharu Ishikawa
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Publication number: 20080020953Abstract: The present invention provides a lubricating oil composition comprising a lube base oil comprising a mineral oil and/or a synthetic oil; (A) an alkenylsuccinimide or an alkylsuccinimide and/or a boron-containing derivative thereof in an amount of 0.01 to 0.14% by mass based on the composition in terms of the nitrogen content as an ashless dispersant, wherein an alkenylsuccic acid monoimide or an alkylsuccinic acid monoimide and/or a boron-containing derivative thereof in the ashless dispersant is 0.05% by mass or less in terms of nitrogen content; and (B) a dialkyldiphenylamine compound in an amount of 0.3 to 5.0% by mass and a hindered phenol compound in an amount of 0 to 2.5% by mass based on the composition as an antioxidant, and (C) a sulfated ash of the lubricating oil composition is 1.2% by mass or less.Type: ApplicationFiled: December 21, 2005Publication date: January 24, 2008Applicant: Idemitsu Kosan Co., Ltd.Inventors: Hideki Kamano, Motoharu Ishikawa, Kazuhiro Teshima
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Publication number: 20070049506Abstract: A lubricating composition comprising a base oil, (A) one or more kinds of compounds selected from phenolic antioxidants and aminic antioxidants, and (B) an ester compound having a disulfide structure is provided. The lubricating composition of the present invention has excellent stability against oxidation, prevents increase of acid value and sludge formation, and has low corrosivity to non-ferrous metals.Type: ApplicationFiled: August 8, 2006Publication date: March 1, 2007Applicant: Idemitsu Kosan Co., Ltd.Inventors: Tadashi KATAFUCHI, Motoharu ISHIKAWA
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Patent number: 6844398Abstract: An ethylenic copolymer composition including an ethylenic copolymer having Mw/Mn of 1.5 to 4, Mw of 3,000 to 1,000,000, and a resin density of 0.85 to 0.95 g/cm3. The relationship between the half width at the half maximum [W/2] of the Gaussian distribution curve, and the average, n, of short-chain branches in the copolymer satisfies the equation, 0.704+0.147n=W/2=?0.055+0.577n. The ethylenic copolymer composition also includes an ethylenic copolymer having an Mw of 3,000 to 1,000,000 and a resin density of 0.85 to 0.95 g/cm3.Type: GrantFiled: May 24, 2002Date of Patent: January 18, 2005Assignee: Idemitsu Kosan Co., Ltd.Inventors: Haruo Shikuma, Shuji Machida, Motoharu Ishikawa, Shinichi Kurokawa
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Patent number: 6641755Abstract: Provided are a fluorescence conversion medium which comprises at least a fluorescent coloring matter and a binder resin and which can absorb light from a light emitter and can emit visible fluorescence, wherein fine particles containing the fluorescent coloring matter are dispersed in the binder resin; and a display device that comprises a light emitter and the fluorescence conversion medium. The fluorescence conversion medium (including fluorescence conversion films) has the advantages of stable fluorescence conversion capability, good heat resistance and good light resistance and favorable to high-resolution multi-color image display; and the display device comprises the fluorescence conversion medium.Type: GrantFiled: July 29, 2002Date of Patent: November 4, 2003Assignee: Idemitsu Kosan Co., Ltd.Inventors: Kazuhiro Tomoike, Mitsuru Eida, Motoharu Ishikawa
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Publication number: 20030087968Abstract: A micelle dispersion comprises hydrophobic particles, conductive particles and a surfactant of a ferrocene derivative dispersed in an aqueous medium, wherein the surfactant of a ferrocene derivative in an equilibrium concentration comprises an oxidized compound in a concentration of 40 &mgr;g/ml or less and a reduced compound in a concentration of 50 to 300 &mgr;g/ml. A process for producing a micelle dispersion comprises dispersing hydrophobic particles, conductive particles and a surfactant of a ferrocene derivative in an aqueous medium, wherein an oxidized compound in the surfactant of a ferrocene derivative is removed with at least one of an ion exchange resin and a reducing agent.Type: ApplicationFiled: October 31, 2002Publication date: May 8, 2003Applicant: Idemitsu Kosan Co., Ltd.Inventors: Motoharu Ishikawa, Hideaki Kurata
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Patent number: 6521671Abstract: A micelle dispersion containing hydrophobic particles, conductive particles and a surfactant of a ferrocene derivative dispersed in an aqueous medium. The surfactant of a ferrocene derivative in an equilibrium concentration contains an oxidized compound in a concentration of 40 &mgr;g/ml or less and a reduced compound in a concentration of 50 to 300 &mgr;g/ml. A process for producing a micelle dispersion including dispersing hydrophobic particles, conductive particles and a surfactant of a ferrocene derivative in an aqueous medium, where an oxidized compound in the surfactant of a ferrocene derivative is removed with at least one of an ion exchange resin and a reducing agent. A color filter can be produced in excellent yield without color overlapping by using the micelle dispersion and the process provides the micelle dispersion.Type: GrantFiled: November 6, 2000Date of Patent: February 18, 2003Assignee: Idemitsu Kosan Co., Ltd.Inventors: Motoharu Ishikawa, Hideaki Kurata
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Publication number: 20030015689Abstract: Provided are a fluorescence conversion medium which comprises at least a fluorescent coloring matter and a binder resin and which can absorb light from a light emitter and can emit visible fluorescence, wherein fine particles containing the fluorescent coloring matter are dispersed in the binder resin; and a display device that comprises a light emitter and the fluorescence conversion medium. The fluorescence conversion medium (including fluorescence conversion films) has the advantages of stable fluorescence conversion capability, good heat resistance and good light resistance and favorable to high-resolution multi-color image display; and the display device comprises the fluorescence conversion medium.Type: ApplicationFiled: July 29, 2002Publication date: January 23, 2003Applicant: Idemitsu Kosan Co., Ltd.Inventors: Kazuhiro Tomoike, Mitsuru Eida, Motoharu Ishikawa
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Publication number: 20020188087Abstract: Disclosed is an ethylenic copolymer having Mw/Mn, as measured through GPC, of from 1.5 to 4, Mw of from 3,000 to 1,000,000, and a resin density of from 0.85 and 0.95 g/cm3. The relationship between the half width at the half maximum [W/2] of the curve as obtained through Gaussian distribution approximation relative to the essential peak of the compositional distribution curve of the copolymer obtained through temperature rising elution fractionation analysis, and the average, n, of short-chain branches existing in the copolymer satisfies an equation, 0.704+0.147n ≦W/2≦−0.055+0.577n. Also disclosed is an ethylenic copolymer having Mw/Mn of from 1.5 to 4 and a resin density of from 0.85 and 0.95 g/cm3.Type: ApplicationFiled: May 24, 2002Publication date: December 12, 2002Applicant: Idemitsu Kosan Co., Ltd.Inventors: Haruo Shikuma, Shuji Machida, Motoharu Ishikawa, Shinichi Kurokawa
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Patent number: 6464898Abstract: Provided are a fluorescence conversion medium which comprises at least a fluorescent coloring matter and a binder resin and which can absorb light from a light emitter and can emit visible fluorescence, wherein fine particles containing the fluorescent coloring matter are dispersed in the binder resin; and a display device that comprises a light emitter and the fluorescence conversion medium. The fluorescence conversion medium (including fluorescence conversion films) has the advantages of stable fluorescence conversion capability, good heat resistance and good light resistance and favorable to high-resolution multi-color image display; and the display device comprises the fluorescence conversion medium.Type: GrantFiled: July 20, 2000Date of Patent: October 15, 2002Assignee: Idemitsu Kosan Co., Ltd.Inventors: Kazuhiro Tomoike, Mitsuru Eida, Motoharu Ishikawa
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Patent number: 6441116Abstract: A film formed of an ethylenic copolymer having Mw/Mn of 1.5 to 4, Mw of 3,000 to 1,000,000, and a resin density of 0.85 to 0.95 g/cm3. In the copolymer compositional distribution curve, the relationship between the half width at the half maximum [W/2] of the Gaussian distribution curve, and the average, n, of short-chain branches in the copolymer satisfies the equation, 0.704+0.147n≦W/2≦−0.055+0.577n. The tear strength (TS, kgf/cm) of the copolymer satisfies equations, TS≧131.5−155×log[{(B+C+D)/A}+0.1], and 0.1≦(B+C+D)/A≦1 where A is the area surrounding the Gaussian distribution curve and the base line of the compositional distribution curve; B is the area surrounding the compositional distribution curve, the curve obtained through Gaussian distribution approximation, and the base line, B being at an elution temperature higher than 32° C.Type: GrantFiled: October 18, 1999Date of Patent: August 27, 2002Assignee: Idemitsu Kosan Co., Ltd.Inventors: Haruo Shikuma, Shuji Machida, Motoharu Ishikawa, Shinichi Kurokawa
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Patent number: 5378274Abstract: Disclosed herein are a color filter wherein an organic pigment is comprised of primary particles having an average particle size of 20 to 200 nm and a particle size distribution within .+-.35 nm and said organic pigment has a color difference of 5 or less when it is subjected to exposure at an illuminance of 100,000 lux or more for 100 hours or more under the condition of a surface temperature at 50.degree. C.; a color filter wherein the film of coloring matter in green has a ratio (T.sub.485 /T.sub.610) of the transmittance of 485 nm (T.sub.485) to that of 610 nm (T.sub.610 ) of 3.5 or less, the maximum transmittance of the film of coloring matter in green is 60% or more and said maximum transmittance is assigned a wavelength of 540 to 550 nm; and a color filter using a specific organic pigment as each of red, green and blue pigments.Type: GrantFiled: October 19, 1993Date of Patent: January 3, 1995Assignee: Idemitsu Kosan Co., Ltd.Inventors: Seiichiro Yokoyama, Motoharu Ishikawa, Yoshio Hiroi, Nobuaki Watanabe