Patents by Inventor Toshiaki Iwai
Toshiaki Iwai 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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Patent number: 11332687Abstract: The present invention provides a compound represented by formula (1) (in formula (1), R1 and R2 each independently represent a group represented by formula (2) or NHR0 (where R1 and R2 are not simultaneously NHR0), R0 represents any one of hydrogen, an alkyl group having 1-20 carbon atoms, an alkenyl group having 2-30 carbon atoms, an aryl group having 6-30 carbon atoms, an alkylaryl group having 7-30 carbon atoms, and an arylalkyl group having 7-30 carbon atoms, each R3 independently represents hydrogen or a hydrocarbon group having 1-30 carbon atoms, l represents an integer of 0-4, m represents an integer of 1-4 (where m is an integer of 2-4 in the case where R1 and R2 are a group represented by formula (2)), and each n independently represents an integer of 0-4, and, in formula (2), R4 represents a hydrocarbon group having 6-24 carbon atoms, and X1 and X2 each independently represent an oxygen atom or a sulfur atom).Type: GrantFiled: April 12, 2018Date of Patent: May 17, 2022Assignee: Idemitsu Kosan Co..Ltd.Inventors: Kazushige Matsubara, Hiroaki Koshima, Toshiaki Iwai, Hideki Kamano
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Lubricating oil composition, method for producing lubricating oil composition, and transmission gear
Patent number: 11124726Abstract: Provided are: a lubricating oil composition satisfying both high viscosity index and high shear stability, which contains a base oil having a kinematic viscosity at 40° C. of 4.0 mm2/s or more and less than 6.0 mm2/s, a kinematic viscosity at 100° C. of 1.0 mm2/s or more and less than 2.0 mm2/s, and a flash point of 140° C. or higher, and a polymethacrylate having a specific structure; and a lubrication method and a transmission each using the lubricating oil composition.Type: GrantFiled: December 21, 2017Date of Patent: September 21, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventor: Toshiaki Iwai -
Patent number: 11111457Abstract: Disclosed is a lubricating oil composition capable of inhibiting vibrations or noises generated between a pulley and a chain or between a pulley and a belt in a CVT or the like, while increasing an intermetallic friction coefficient, the composition containing a base oil, an alkaline earth metal-based detergent (A), a phosphite ester (B1), a phosphate ester amine salt (B2), an acidic phosphate ester (B3), an aliphatic monoamine (C1), and an aromatic monoamine (C2).Type: GrantFiled: March 2, 2020Date of Patent: September 7, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventor: Toshiaki Iwai
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Publication number: 20210095221Abstract: The present invention provides a compound represented by formula (1) (in formula (1), R1 and R2 each independently represent a group represented by formula (2) or NHR0 (where R1 and R2 are not simultaneously NHR0), R0 represents any one of hydrogen, an alkyl group having 1-20 carbon atoms, an alkenyl group having 2-30 carbon atoms, an aryl group having 6-30 carbon atoms, an alkylaryl group having 7-30 carbon atoms, and an arylalkyl group having 7-30 carbon atoms, each R3 independently represents hydrogen or a hydrocarbon group having 1-30 carbon atoms, l represents an integer of 0-4, m represents an integer of 1-4 (where m is an integer of 2-4 in the case where R1 and R2 are a group represented by formula (2)), and each n independently represents an integer of 0-4, and, in formula (2), R4 represents a hydrocarbon group having 6-24 carbon atoms, and X1 and X2 each independently represent an oxygen atom or a sulfur atom).Type: ApplicationFiled: April 12, 2018Publication date: April 1, 2021Applicant: Idemitsu Kosan Co.,Ltd.Inventors: Kazushige MATSUBARA, Hiroaki KOSHIMA, Toshiaki IWAI, Hideki KAMANO
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Publication number: 20200199484Abstract: Disclosed is a lubricating oil composition capable of inhibiting vibrations or noises generated between a pulley and a chain or between a pulley and a belt in a CVT or the like, while increasing an intermetallic friction coefficient, the composition containing a base oil, an alkaline earth metal-based detergent (A), a phosphite ester (B1), a phosphate ester amine salt (B2), an acidic phosphate ester (B3), an aliphatic monoamine (C1), and an aromatic monoamine (C2).Type: ApplicationFiled: March 2, 2020Publication date: June 25, 2020Applicant: IDEMITSU KOSAN CO., LTD.Inventor: Toshiaki Iwai
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LUBRICATING OIL COMPOSITION, METHOD FOR PRODUCING LUBRICATING OIL COMPOSITION, AND TRANSMISSION GEAR
Publication number: 20190367830Abstract: Provided are: a lubricating oil composition satisfying both high viscosity index and high shear stability, which contains a base oil having a kinematic viscosity at 40° C. of 4.0 mm2/s or more and less than 6.0 mm2/s, a kinematic viscosity at 100° C. of 1.0 mm2/s or more and less than 2.0 mm2/s, and a flash point of 140° C. or higher, and a polymethacrylate having a specific structure; and a lubrication method and a transmission each using the lubricating oil composition.Type: ApplicationFiled: December 21, 2017Publication date: December 5, 2019Applicant: IDEMITSU KOSAN CO., LTD.Inventor: Toshiaki IWAI -
Publication number: 20190040336Abstract: Disclosed is a lubricating oil composition capable of inhibiting vibrations or noises generated between a pulley and a chain or between a pulley and a belt in a CVT or the like, while increasing an intermetallic friction coefficient, the composition containing a base oil, an alkaline earth metal-based detergent (A), a phosphite ester (B1), a phosphate ester amine salt (B2), an acidic phosphate ester (B3), an aliphatic monoamine (C1), and an aromatic monoamine (C2).Type: ApplicationFiled: January 19, 2017Publication date: February 7, 2019Applicant: IDEMITSU KOSAN CO., LTD,Inventor: Toshiaki IWAI
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Patent number: 9714395Abstract: A lubricating oil composition is provided by blending a base oil and an additive, the additive including (a) at least one of an alkaline earth metal sulfonate, an alkaline earth metal salicylate and an alkaline earth metal phenate, (b) a sulfur-containing phosphorus compound, and (c) a thiadiazole compound. A product ((c)×P) of a mass (mass %) of the component (c) and a mass (mass ppm) of a phosphorus element in the component (b) in the composition is in a range from 1 to 50.Type: GrantFiled: March 13, 2014Date of Patent: July 25, 2017Assignee: IDEMITSU KOSAN CO., LTD.Inventor: Toshiaki Iwai
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Publication number: 20170198232Abstract: Through a lubricating oil additive including an amide compound represented by the following general formula (1) and a lubricating oil composition using the same, a lubricating oil additive and a lubricating oil composition exhibiting not only a high intermetal friction coefficient but also excellent intermetal friction-coefficient/slipping-velocity characteristics are provided. Ra—CO—(NH-L1)n-NRbRc ??(1) In the formula, Ra is a straight-chain alkyl group having 8 to 22 carbon atoms or a branched-chain alkyl group having 8 to 22 carbon atoms, or a straight-chain alkenyl group having 8 to 22 carbon atoms or a branched-chain alkenyl group having 8 to 22 carbon atoms; L1 is an alkylene group having 1 to 6 carbon atoms; n is an integer of 1 to 4; and —NRbRc is a primary amino group or a piperazyl group.Type: ApplicationFiled: June 24, 2015Publication date: July 13, 2017Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Hiroaki KOSHIMA, Junichi DESHIMARU, Toshiaki IWAI
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Patent number: 9574157Abstract: A lubricating oil composition contains a lubricating base oil and components (A) to (D): (A) a primary amine; (B) a tertiary amine; (C) at least one of metal sulfonate, metal phenate and metal salicylate; and (D) at least one of acid phosphate and acid phosphite.Type: GrantFiled: March 12, 2013Date of Patent: February 21, 2017Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Keiichi Narita, Toshiaki Iwai
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Publication number: 20160222312Abstract: A transmission fluid contains a base oil and calcium carbonate. The calcium carbonate is dispersed in a form of aggregations in the transmission fluid. A ratio of the aggregations having a particle diameter of 200 nm or more is 30 mass % or more in terms of calcium based on a total amount of the aggregations. A base value of the transmission fluid is in a range from 0.5 mgKOH/g to 10 mgKOH/g by a hydrochloric acid method.Type: ApplicationFiled: September 8, 2014Publication date: August 4, 2016Applicant: IDEMITSU KOSAN CO., LTD.Inventor: Toshiaki IWAI
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Publication number: 20160208192Abstract: A transmission fluid contains a base oil and calcium carbonate. The calcium carbonate is dispersed in a form of aggregations in the transmission fluid. A ratio of the aggregations having a particle diameter of 200 nm or more is 28 mass % or less in terms of calcium based on a total amount of the aggregations. A base value of the transmission fluid is in a range from 0.5 mgKOH/g to 3 mgKOH/g by a hydrochloric acid method.Type: ApplicationFiled: September 8, 2014Publication date: July 21, 2016Applicant: IDEMITSU KOSAN CO., LTD.Inventor: Toshiaki IWAI
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Publication number: 20160201003Abstract: A transmission fluid contains a base oil and calcium carbonate. The calcium carbonate is dispersed in a form of aggregations in the transmission fluid. A ratio of the aggregations having a particle diameter of 200 nm or more is in a range from 10 mass % to 35 mass % in terms of calcium based on a total amount of the aggregations. A base value of the transmission fluid is in a range from 0.5 mgKOH/g to 4 mgKOH/g by a hydrochloric acid method.Type: ApplicationFiled: September 8, 2014Publication date: July 14, 2016Applicant: IDEMITSU KOSAN CO., LTD.Inventor: Toshiaki IWAI
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Patent number: 9365797Abstract: A lubricating oil composition for a transmission includes a base oil in a range of 1 mass % to 80 mass %, the base oil having a kinematic viscosity at 40 degrees C. in a range of 0.5 mm2/s to 20 mm2/s and a viscosity index of 200 or more. Since the composition exhibits a high viscosity index and a high shear stability, the composition is suitable for a continuously variable transmission.Type: GrantFiled: November 16, 2012Date of Patent: June 14, 2016Assignee: IDEMITSU KOSAN CO., LTD.Inventor: Toshiaki Iwai
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Publication number: 20150368582Abstract: A lubricating oil composition is provided by blending a base oil and an additive, the additive including (a) at least one of an alkaline earth metal sulfonate, an alkaline earth metal salicylate and an alkaline earth metal phenate, (b) a sulfur-containing phosphorus compound, and (c) a thiadiazole compound. A product ((c)×P) of a mass (mass %) of the component (c) and a mass (mass ppm) of a phosphorus element in the component (b) in the composition is in a range from 1 to 50.Type: ApplicationFiled: March 13, 2014Publication date: December 24, 2015Applicant: IDEMITSU KOSAN CO. , LTD.Inventor: Toshiaki IWAI
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Publication number: 20150369733Abstract: A dynamic light scattering measurement device includes an irradiation section that applies light emitted from a low-coherence light source to a sample that includes particles, a spectral intensity acquisition section that disperses reflected light from a reference plane and scattered light from the sample that has passed through the reference plane to acquire a spectral intensity of interference light of the reflected light and the scattered light, the reference plane being situated to intersect an optical path through which the light is applied to the sample, and a measurement section that measures dynamic light scattering of the sample based on the acquired spectral intensity.Type: ApplicationFiled: June 18, 2015Publication date: December 24, 2015Inventors: Yusuke IZUTANI, Toshiaki IWAI
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Patent number: 9085742Abstract: A lubricating oil composition for a continuously variable transmission according to the invention includes: a base oil of lubricating oil; components (A) to (C) below: (A) an acidic phosphorus compound expressed by a formula (1) below, where: R1, R2 and R3 each independently represent hydrogen or an alkyl group having 8 or less carbon atoms, R1, R2 and R3 being not simultaneously hydrogen nor the alkyl group, X1, X2, X3 and X4 each represent oxygen or sulfur, and n represents zero or one, in which when n is zero, at least two of X1, X2 and X3 are sulfur and when n is one, at least two of X1, X2, X3 and X4 are sulfur; (B) an imide compound; and (C) an alkaline earth metal salt.Type: GrantFiled: January 22, 2009Date of Patent: July 21, 2015Assignee: IDEMITSU KOSAN CO., LTD.Inventor: Toshiaki Iwai
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Publication number: 20150197704Abstract: A lubricating oil composition, which contains a base oil, a boron-containing bisalkyl succinimide, a boron-containing bisalkenyl succinimide, or both, an amide, and a dispersed polymethacrylate. The lubricating oil composition is used for transmissions, such as Dual Clutch Transmissions.Type: ApplicationFiled: June 28, 2013Publication date: July 16, 2015Inventors: Toshiaki Iwai, Keiichi Narita, Daisuke Takekawa
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Publication number: 20140378357Abstract: A lubricating oil composition contains a lubricating base oil and components (A) to (D): (A) a primary amine; (B) a tertiary amine; (C) at least one of metal sulfonate, metal phenate and metal salicylate; and (D) at least one of acid phosphate and acid phosphite.Type: ApplicationFiled: March 12, 2013Publication date: December 25, 2014Inventors: Keiichi Narita, Toshiaki Iwai
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Publication number: 20140336990Abstract: Light emitted from a low-coherence light source is split into two beams by an optical coupler. One of the beams is applied to a sample medium. The other beam is subjected to phase modulation by a reference minor and a vibration element. The (reference) beam subjected to phase modulation and a scattered beam from the sample medium are wavelength-resolved by a diffraction grating, and the spectrum of resulting interference light is detected by a photodetector. A calculation section calculates an intensity signal corresponding to the position of each scattering point in the sample medium based on the detected spectrum, calculates a power spectrum corresponding to the position of each scattering point based on a temporal change in the intensity signal corresponding to the position of each scattering point, and calculates a diffusion coefficient of the particles corresponding to the position of each scattering point based on the calculated power spectrum.Type: ApplicationFiled: October 24, 2012Publication date: November 13, 2014Inventors: Toshiaki Iwai, Toshiharu Watarai