Patents by Inventor Masaaki Itou
Masaaki Itou 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).
-
Patent number: 11560527Abstract: A lubricating oil composition for a transmission, the composition including: (A) a lubricant base oil comprising a mineral base oil and/or a synthetic base oil; and (B) a poly(meth)acrylate having a weight average molecular weight of no more than 25,000, wherein the composition has a kinematic viscosity at 100° C. of 2.5 to 4.9 mm2/s.Type: GrantFiled: February 20, 2020Date of Patent: January 24, 2023Assignee: ENEOS CORPORATIONInventors: Kohei Masuda, Haruko Nagai, Masaaki Itou, Mayuko Sumiya
-
Publication number: 20220416249Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a positive electrode active material layer. The positive electrode active material layer includes a positive electrode active material, a positive electrode binder, and a positive electrode conductor. The negative electrode includes a negative electrode active material. The positive electrode active material includes a lithium-cobalt composite oxide. The positive electrode binder includes a vinylidene fluoride polymer having a melting point of higher than or equal to 160° C. and lower than or equal to 170° C. The positive electrode conductor includes carbon black having a hollow structure. The negative electrode active material includes a carbon material.Type: ApplicationFiled: August 25, 2022Publication date: December 29, 2022Inventors: Yuta HIRANO, Takaaki MATSUI, Masaaki ITOU
-
Publication number: 20220127543Abstract: A lubricating oil composition for a transmission, the composition including: (A) a lubricant base oil comprising a mineral base oil and/or a synthetic base oil; and (B) a poly(meth)acrylate having a weight average molecular weight of no more than 25,000, wherein the composition has a kinematic viscosity at 100° C. of 2.5 to 4.9 mm2/s.Type: ApplicationFiled: February 20, 2020Publication date: April 28, 2022Applicant: ENEOS CorporationInventors: Kohei MASUDA, Haruko NAGAI, Masaaki ITOU, Mayuko SUMIYA
-
Patent number: 10319501Abstract: A chip resistor includes a resistive element, a pair of electrodes, and heat radiator plates. The resistive element is made of a plate-shaped metal. The pair of electrodes is formed on both ends of a first surface of the resistive element. The heat radiator plates are fastened to a second surface of the resistive element and are disposed spaced apart from each other via a gap therebetween.Type: GrantFiled: February 2, 2015Date of Patent: June 11, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Masaaki Itou
-
Patent number: 10087389Abstract: A lubricating oil composition containing a lubricating base oil and on the basis of the total mass of the composition, (A) a boron-containing ashless dispersant in an amount of 100 to 500 ppm by mass as boron, (B) a phosphorous additive in an amount of 300 to 800 ppm by mass as phosphorus, (C) an amide- and/or imide-based friction modifier in an amount of 1 to 4 percent by mass, and (D) an alkali metal- and/or alkaline earth metal-based detergent in an amount of 100 to 300 ppm by mass as metal, and having a 40° C. kinematic viscosity of 30 mm2/s or lower is provided. The lubricating oil composition, which has a low viscosity to improve fuel efficiency, also has superior anti-wear, anti-seizure, and anti-shattering properties, even when the composition is degraded by oxidation or by the elution of compounds from sealing materials after long term use.Type: GrantFiled: September 16, 2014Date of Patent: October 2, 2018Assignee: JX Nippon Oil & Energy CorporationInventors: Shingo Matsuki, Go Tatsumi, Hironori Isoh, Isao Kurihara, Masaaki Itou
-
Publication number: 20170198234Abstract: A lubricating oil composition containing a lubricating base oil and on the basis of the total mass of the composition, (A) a boron-containing ashless dispersant in an amount of 100 to 500 ppm by mass as boron, (B) a phosphorous additive in an amount of 300 to 800 ppm by mass as phosphorus, (C) an amide- and/or imide-based friction modifier in an amount of 1 to 4 percent by mass, and (D) an alkali metal- and/or alkaline earth metal-based detergent in an amount of 100 to 300 ppm by mass as metal, and having a 40° C. kinematic viscosity of 30 mm2/s or lower is provided. The lubricating oil composition, which has a low viscosity to improve fuel efficiency, also has superior anti-wear, anti-seizure, and anti-shattering properties, even when the composition is degraded by oxidation or by the elution of compounds from sealing materials after long term use.Type: ApplicationFiled: September 16, 2014Publication date: July 13, 2017Applicants: JX Nippon Oil & Energy Corporation, JX Nippon Oil & Energy CorporationInventors: Shingo MATSUKI, Go TATSUMI, Hironori ISOH, Isao KURIHARA, Masaaki ITOU
-
Publication number: 20160343479Abstract: A chip resistor includes a resistive element, a pair of electrodes, and heat radiator plates. The resistive element is made of a plate-shaped metal. The pair of electrodes is formed on both ends of a first surface of the resistive element. The heat radiator plates are fastened to a second surface of the resistive element and are disposed spaced apart from each other via a gap therebetween.Type: ApplicationFiled: February 2, 2015Publication date: November 24, 2016Inventor: Masaaki ITOU
-
Patent number: 9012380Abstract: The lubricating base oil of the invention is characterized by satisfying at least one of the following conditions (a) or (b). (a) A saturated compound content of 95% by mass or greater, and a proportion of 0.1-10% by mass of cyclic saturated compounds among the saturated compounds. (b) The condition represented by the following formula (1). 1.435?n20?0.002×kv100?1.450??(1) wherein n20 represents the refractive index of the lubricating base oil at 20° C., and kv100 represents the kinematic viscosity (mm2/s) of the lubricating base oil at 100° C.Type: GrantFiled: January 10, 2006Date of Patent: April 21, 2015Assignees: Nippon Oil Corporation, Petroleum Energy CenterInventors: Takashi Sano, Hitoshi Komatsubara, Hisayuki Wada, Osamu Kurosawa, Masaaki Itou, Shigeki Matsui, Masato Takahashi, Kai Fu, Shinichi Shirahama, Izuru Sugiura, Masahiro Taguchi, Shozaburo Konishi
-
Patent number: 8846589Abstract: Lubricating oil compositions for transmissions comprises (A) a lubricating base oil with a kinematic viscosity at 100° C. adjusted to 1.5 to 6 mm2/s, composed of (A1) a lubricating base oil with a kinematic viscosity at 100° C. of 1.5 mm2/s or higher and lower than 7 mm2/s or (A1) the lubricating oil and (A2) a lubricating base oil with a kinematic viscosity at 100° C. of 7 to 50 mm2/s, blended with (B) a poly(meth)acrylate-based additive, so that the composition has a kinematic viscosity at 100° C. of 3 to 8 mm2/s and a viscosity index of 95 to 200, (A) and (B) fulfill a specific requirement. The compositions achieve long fatigue life though having low viscosity.Type: GrantFiled: April 19, 2007Date of Patent: September 30, 2014Assignee: Nippon Oil CorporationInventors: Toru Matsuoka, Masaaki Itou
-
Patent number: 8728997Abstract: The present invention provides a lubricating oil composition which is less in evaporation loss even having a low viscosity and excellent in lubricating properties such as low-temperature viscosity characteristics and anti-seizure properties and in oxidation stability, suitable for use in engines, automatic transmissions, manual transmissions, final reduction gear units, and continuously variable transmissions. The lubricating oil composition comprises (A) a lubricating base oil and (B) a poly(meth)acrylate additive in such an amount that the kinematic viscosity at 100° C. of the composition (Vc) is from 3 to 15 mm2/s, the viscosity index of the composition is from 95 to 200, and the ratio of the kinematic viscosity at 100° C. of (A) the lubricating base oil (Vb) to (Vc) (=Vb/Vc) is 0.60 or greater, further, (C) a metallic detergent, (D) an ashless dispersant and (E) zinc dithiophosphate, each in a specific amount.Type: GrantFiled: April 19, 2007Date of Patent: May 20, 2014Assignee: Nippon Oil CorporationInventors: Osamu Kurosawa, Masaaki Itou, Masato Takahashi
-
Publication number: 20120065109Abstract: Lubricating oil compositions for transmissions comprises (A) a lubricating base oil with a kinematic viscosity at 100° C. adjusted to 1.5 to 6 mm2/s, composed of (A1) a lubricating base oil with a kinematic viscosity at 100° C. of 1.5 mm2/s or higher and lower than 7 mm2/s or (A1) the lubricating oil and (A2) a lubricating base oil with a kinematic viscosity at 100° C. of 7 to 50 mm2/s, blended with (B) a poly(meth)acrylate-based additive, so that the composition has a kinematic viscosity at 100° C. of 3 to 8 mm2/s and a viscosity index of 95 to 200, (A) and (B) fulfill a specific requirement. The compositions achieve long fatigue life though having low viscosity.Type: ApplicationFiled: May 9, 2011Publication date: March 15, 2012Applicant: NIPPON OIL CORPORATIONInventors: Toru Matsuoka, Masaaki Itou
-
Publication number: 20100035777Abstract: The lubricating base oil of the invention is characterized by satisfying at least one of the following conditions (a) or (b). (a) A saturated compound content of 95% by mass or greater, and a proportion of 0.1-10% by mass of cyclic saturated compounds among the saturated compounds. (b) The condition represented by the following formula (1). 1.435?n20?0.002×kv100 ?1.450??(1) wherein n20 represents the refractive index of the lubricating base oil at 20° C., and kv100 represents the kinematic viscosity (mm2/s) of the lubricating base oil at 100° C.Type: ApplicationFiled: January 10, 2006Publication date: February 11, 2010Inventors: Takashi Sano, Hitoshi Komatsubara, Hisayuki Wada, Osamu Kurosawa, Masaaki Itou, Shigeki Matsui, Masato Takahashi, Kai Fu, Shinichi Shirahama, Izuru Sugiura, Masahiro Taguchi, Shozaburo Konishi
-
Publication number: 20090131291Abstract: The present invention provides a lubricating oil composition which is less in evaporation loss even having a low viscosity and excellent in lubricating properties such as low-temperature viscosity characteristics and anti-seizure properties and in oxidation stability, suitable for use in engines, automatic transmissions, manual transmissions, final reduction gear units, and continuously variable transmissions. The lubricating oil composition comprises (A) a lubricating base oil and (B) a poly(meth)acrylate additive in such an amount that the kinematic viscosity at 100° C. of the composition (Vc) is from 3 to 15 mm2/s, the viscosity index of the composition is from 95 to 200, and the ratio of the kinematic viscosity at 100° C. of (A) the lubricating base oil (Vb) to (Vc) (=Vb/Vc) is 0.60 or greater, further, (C) a metallic detergent, (D) an ashless dispersant and (E) zinc dithiophosphate, each in a specific amount.Type: ApplicationFiled: April 19, 2007Publication date: May 21, 2009Applicant: NIPPON OIL CORPORATIONInventors: Osamu Kurosawa, Masaaki Itou, Masato Takahashi
-
Publication number: 20070270320Abstract: The invention provides a lubricant composition for automatic transmissions excellent in sustainability of anti-shudder property, low-temperature viscosity characteristics, and oxidation stability, and excellent and well-balanced in durability of friction characteristics, energy-conserving performance, and anti-fatigue performance on gears. The composition contains a base oil having a kinematic viscosity at 100° C. of 3.7-4.1 mm2/s, and composed of base oil having the viscosity of 2.5-4.5 mm2/s, and base oil having the viscosity of 10-40 mm2/s; 1-20 mass % poly(meth)acrylate viscosity index improver having Mw of 15000-300.00; 2-4 mass % imide friction modifier having a C8-C30 hydrocarbon group; 0.01-0.04 mass % phosphorus extreme pressure agent in terms of phosphorus; and 0.01-0.04 mass % ashless dispersant having at least one alkyl or alkenyl group of a number average molecular weight of ?2000 in terms of nitrogen, all with respect to the total amount of the composition, and has the viscosity of 5.6-5.Type: ApplicationFiled: April 16, 2007Publication date: November 22, 2007Applicants: NIPPON OIL CORPORATION, JATCO LTDInventors: Masaaki Itou, Yasuhiro Murakami, Yoshie Arakawa, Makoto Maeda, Takahiro Sugiyama
-
Publication number: 20070191239Abstract: Lubricating oil compositions for transmissions comprises (A) a lubricating base oil with a kinematic viscosity at 100° C. adjusted to 1.5 to 6 mm2/s, composed of (A1) a lubricating base oil with a kinematic viscosity at 100° C. of 1.5 mm2/s or higher and lower than 7 mm2/s or (Al) the lubricating oil and (A2) a lubricating base oil with a kinematic viscosity at 100° C of 7 to 50 mm2/s, blended with (B) a poly(meth)acrylate-based additive, so that the composition has a kinematic viscosity at 100° C. of 3 to 8 mm2/s and a viscosity index of 95 to 200, (A) and (B) fulfill a specific requirement. The compositions achieve long fatigue life though having low viscosity.Type: ApplicationFiled: April 19, 2007Publication date: August 16, 2007Applicant: NIPPON OIL CORPORATIONInventors: Toru MATSUOKA, Masaaki ITOU
-
Patent number: 7070288Abstract: In a vehicle door mirror device (10), an outer side surface (20B), with respect to a vehicle, of a projection (20) of a door mirror stay (16) is made to be flat. Further, an angle of the outer side surface (20B) with respect to a front-rear direction of the vehicle, inward or outward with respect to the vehicle, is not more than 2 degrees. Therefore, wind arriving at the outer side surface (20B) flows rearward with respect to the vehicle with fluctuation thereof being suppressed, and its flow is straightened. Furthermore, a radius of curvature of a corner portion (20E) at an outer rear side, with respect to the vehicle, of the projection (20) is not more than 15 mm. Therefore, wind arriving at the outer side surface (20B) of the projection (20) is suppressed from flowing along the corner portion (20E), and its flow is straightened. Thus, wind noise performance of the door mirror stay (16) can be improved.Type: GrantFiled: March 19, 2003Date of Patent: July 4, 2006Assignee: Kabushiki Kaisha Tokai-Rik-A-Denki-SeisakushoInventors: Toshinobu Mizutani, Masakazu Iwatsuki, Masakazu Aoki, Masaaki Itou, Yasunobu Okatsu
-
Patent number: 6916886Abstract: To provide a propylene based block copolymer that, when used as a molding material, exhibits an extremely good stiffness-impact resistance balance and has good heat resistance and excellent moldability, and therefore, in molding, good appearance is revealed. That is, the invention provides a propylene based block copolymer obtained through a preceding stage step of producing a propylene polymer component (PP) and a subsequent stage step of producing a propylene-ethylene copolymer component (EP) using a metallocene catalyst, wherein the block copolymer satisfies specific requisites.Type: GrantFiled: September 26, 2002Date of Patent: July 12, 2005Assignee: Japan Polypropylene CorporationInventors: Tetsuya Morioka, Kazuya Sakata, Toshihiko Sugano, Masaaki Itou, Yuu Hayakawa
-
Publication number: 20050141114Abstract: In a vehicle door mirror device (10), an outer side surface (20B), with respect to a vehicle, of a projection (20) of a door mirror stay (16) is made to be flat. Further, an angle of the outer side surface (20B) with respect to a front-rear direction of the vehicle, inward or outward with respect to the vehicle, is not more than 2 degrees. Therefore, wind arriving at the outer side surface (20B) flows rearward with respect to the vehicle with fluctuation thereof being suppressed, and its flow is straightened. Furthermore, a radius of curvature of a corner portion (20E) at an outer rear side, with respect to the vehicle, of the projection (20) is not more than 15 mm. Therefore, wind arriving at the outer side surface (20B) of the projection (20) is suppressed from flowing along the corner portion (20E), and its flow is straightened. Thus, wind noise performance of the door mirror stay (16) can be improved.Type: ApplicationFiled: March 19, 2003Publication date: June 30, 2005Applicant: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Toshinobu Mizutani, Masakazu Iwatsuki, Masakazu Aoki, Masaaki Itou, Yasunobu Okatsu
-
Publication number: 20050009993Abstract: To provide a propylene based block copolymer that, when used as a molding material, exhibits an extremely good stiffness-impact resistance balance and has good heat. resistance and excellent moldability, and therefore, in molding, good appearance is revealed. That is, the invention provides a propylene based block copolymer obtained through a preceding stage step of producing a propylene polymer component (PP) and a subsequent stage step of producing a propylene-ethylene copolymer component (EP) using a metallocene catalyst, wherein the block copolymer satisfies specific requisites.Type: ApplicationFiled: September 26, 2002Publication date: January 13, 2005Inventors: Tetsuya Morioka, Kazuya Sakata, Toshihiko Sugano, Masaaki Itou, Yuu Hayakawa
-
Patent number: 5408320Abstract: A semiconductor wafer includes a top surface on which a semiconductor circuit pattern is to be fabricated, and a bottom surface on which alignment marks for positioning the semiconductor circuit pattern are arranged. The alignment marks are arranged at a predetermined pitch and in an arrangement that is not unique to the pattern formed on the top surface.Type: GrantFiled: December 22, 1992Date of Patent: April 18, 1995Assignee: Hitachi, Ltd.Inventors: Soichi Katagiri, Shigeo Moriyama, Tsuneo Terasawa, Masaaki Itou