Patents by Inventor Shota Abe
Shota Abe 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: 11155768Abstract: A lubricant oil composition for automotive gears includes a lubricant base oil including a mineral oil having a kinematic viscosity at 100° C. of 2.0 to 6.5 mm2/s, a viscosity index of not less than 105 and a pour point of not more than ?10° C., and/or a synthetic oil having a kinematic viscosity at 100° C. of 1.0 to 6.5 mm2/s, a viscosity index of not less than 120 and a pour point of not more than ?30° C.; and an ethylene/?-olefin copolymer having an ethylene content of 55 to 85 mol %, a kinematic viscosity at 100° C. of 10 to 200 mm2/s, a molecular weight distribution of not more than 2.2, and a melting point in the range of ?30° C. to ?60° C. The lubricant oil composition for automotive gears has a kinematic viscosity at 100° C. of 4.0 to 9.0 mm2/s.Type: GrantFiled: January 5, 2018Date of Patent: October 26, 2021Assignee: MITSUI CHEMICALS, INC.Inventors: Shota Abe, Terufumi Suzuki
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Publication number: 20210002435Abstract: A masterbatch of a liquid additive is provided, the resin composition for the masterbatch comprising (a) a block copolymer or a hydrogenated product thereof, the block copolymer containing a polymer block having a vinyl aromatic compound as a main component and a polymer block having a conjugated diene compound as a main component, and 40 to 100 parts by mass of a polyolefinic resin and 100 to 150 parts by mass of an ethylene.?-olefin copolymer with respect to 100 parts by mass of the (a) component, wherein the kinematic viscosity at 100° C. is 10 to 5,000 mm2/s; the ethylene molar content is in the range of 30 to 85 mol %; and the molecular weight distribution (Mw/Mn) for the molecular weight measured by gel permeation chromatography (GPC) with reference to polystyrene is not more than 2.5.Type: ApplicationFiled: March 7, 2019Publication date: January 7, 2021Applicant: MITSUI CHEMICALS, INC.Inventors: Yuto YOSHIDA, Shota ABE, Atsushi TAKESHIMA, Terufumi SUZUKI, Kouzi MATSUNAGA
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Publication number: 20190338212Abstract: A lubricant oil composition for automotive gears includes a lubricant base oil including a mineral oil having a kinematic viscosity at 100° C. of 2.0 to 6.5 mm2/s, a viscosity index of not less than 105 and a pour point of not more than ?10° C., and/or a synthetic oil having a kinematic viscosity at 100° C. of 1.0 to 6.5 mm2/s, a viscosity index of not less than 120 and a pour point of not more than ?30° C.; and an ethylene/?-olefin copolymer having an ethylene content of 55 to 85 mol %, a kinematic viscosity at 100° C. of 10 to 200 mm2/s, a molecular weight distribution of not more than 2.2, and a melting point in the range of ?30° C. to ?60° C. The lubricant oil composition for automotive gears has a kinematic viscosity at 100° C. of 4.0 to 9.0 mm2/s.Type: ApplicationFiled: January 5, 2018Publication date: November 7, 2019Applicant: MITSUI CHEMICALS, INC.Inventors: Shota ABE, Terufumi SUZUKI
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Patent number: 10227543Abstract: A lubricant composition includes a lubricant base oil (A) having a kinematic viscosity at 100° C. of 1 to 10 mm2/s, and an ethylene/?-olefin copolymer (B) in which (B1) the peak top molecular weight is 3,000 to 10,000, (B2) the copolymer shows no melting peak, (B3) the value B is not less than 1.1 and (B4) the kinematic viscosity at 100° C. is 140 to 500 mm2/s. The lubricant composition has a kinematic viscosity at 100° C. of not more than 20 mm2/s, a peak top of molecular weight in the range of 3,000 to 10,000, and a weight fraction of components having a molecular weight not less than 20,000 of 1 to 10% relative to all components having a molecular weight not less than the molecular weight that gives the peak top.Type: GrantFiled: September 7, 2015Date of Patent: March 12, 2019Assignee: MITSUI CHEMICALS, INC.Inventors: Shota Abe, Ryousuke Kaneshige
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Publication number: 20170253827Abstract: [Problem] From the points of view of improving the fuel efficiency of automobiles and industrial machines and saving energies thereof, the present invention provides lubricants having outstanding shear stability and low-temperature viscosity characteristics. [Solution] A lubricant composition includes a lubricant base oil (A) having a kinematic viscosity at 100° C. of 1 to 10 mm2/s, and an ethylene/?-olefin copolymer (B) in which (B1) the peak top molecular weight is 3,000 to 10,000, (B2) the copolymer shows no melting peak, (B3) the value B is not less than 1.1 and (B4) the kinematic viscosity at 100° C. is 140 to 500 mm2/s. The lubricant composition has a kinematic viscosity at 100° C. of not more than 20 mm2/s, a peak top of molecular weight in the range of 3,000 to 10,000, and a weight fraction of components having a molecular weight not less than 20,000 of 1 to 10% relative to all components having a molecular weight not less than the molecular weight that gives the peak top.Type: ApplicationFiled: September 7, 2015Publication date: September 7, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Shota ABE, Ryousuke KANESHIGE
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Patent number: 9534188Abstract: A lubricating oil composition comprising (A) an ethylene/?-olefin copolymer satisfying all of the following requirements (A-1) to (A-3): (A-1) an ethylene structural unit content of 30 to 70% by mol, (A-2) a kinematic viscosity at 100° C. of 20 to 3000 mm2/s, and (A-3) Mw/Mn as measured by GPC of 1 to 2.5, (F) a sulfur-containing compound in which at least one hydrocarbon group adjacent to sulfur is a secondary or tertiary hydrocarbon group, and as an optional component, (G) an ?-olefin polymer having 3 to 6 carbon atoms, and having a kinematic viscosity at 40° C. of 450 to 51,000 mm2/s, a sulfur content of 0.1 to 5 parts by weight, and a component (G) content of 0 to 15 parts by weight. The lubricating oil composition is suitable particularly for gear oil and the like.Type: GrantFiled: April 3, 2013Date of Patent: January 3, 2017Assignee: MITSUI CHEMICALS, INC.Inventors: Ryousuke Kaneshige, Shota Abe
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Publication number: 20150080280Abstract: A lubricating oil composition comprising (A) an ethylene/?-olefin copolymer satisfying all of the following requirements (A-1) to (A-3) : (A-1) an ethylene structural unit content of 30 to 70% by mol, (A-2) a kinematic viscosity at 100° C. of 20 to 3000 mm2/s, and (A-3) Mw/Mn as measured by GPC of 1 to 2.5, (F) a sulfur-containing compound in which at least one hydrocarbon group adjacent to sulfur is a secondary or tertiary hydrocarbon group, and as an optional component, (G) an ?-olefin polymer having 3 to 6 carbon atoms, and having a kinematic viscosity at 40° C. of 450 to 51,000 mm2/s, a sulfur content of 0.1 to 5 parts by weight, and a component (G) content of 0 to 15 parts by weight. The lubricating oil composition is suitable particularly for gear oil and the like.Type: ApplicationFiled: April 3, 2013Publication date: March 19, 2015Inventors: Ryousuke Kaneshige, Shota Abe
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Patent number: 8349957Abstract: The present invention provides a polyolefin resin composition which is excellent in mechanical properties and dimensional stability and is particularly excellent in heat resistance, a film which is excellent in mechanical properties, dimensional stability and heat resistance because it is obtained from the polyolefin resin composition and which is particularly excellent in meltdown properties, a macroporous membrane which is excellent in permeability and shutdown properties in addition to the above properties, and uses thereof. The polyolefin resin composition of the present invention (C) comprises 85 to 50% by mass of ultrahigh-molecular weight polyethylene (A) having a specific intrinsic viscosity and 15 to 50% by mass of a polymer (B) containing a repeating unit derived from 4-methyl-1-pentene, in 100% by mass of the polyolefin resin composition (C).Type: GrantFiled: November 18, 2009Date of Patent: January 8, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Shota Abe, Atsushi Morita, Kazuoto Sugiyama, Mineo Kubo
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Publication number: 20120135903Abstract: A lubricating oil composition comprising: boron atoms from about 5-75 ppm; and 100% by mass being (i) 90 to 10% of a (co)polymer of specified kinematic viscosity and acid values, primarily derived from 1-decene, (ii) 5 to 85% of a (co)polymer having specified kinematic viscosity and molecular weight distribution, mostly derived from 1-octene, and (iii) 5 to 15% of a fatty acid ester.Type: ApplicationFiled: May 5, 2011Publication date: May 31, 2012Inventors: Shota ABE, Ryousuke Kaneshige, Yuriko Ilmura, Yasushi Tohi, Michio Toriumi, Junichi Yoshizono
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Publication number: 20110207840Abstract: The present invention provides a polyolefin resin composition which is excellent in mechanical properties and dimensional stability and is particularly excellent in heat resistance, a film which is excellent in mechanical properties, dimensional stability and heat resistance because it is obtained from the polyolefin resin composition and which is particularly excellent in meltdown properties, a macroporous membrane which is excellent in permeability and shutdown properties in addition to the above properties, and uses thereof. The polyolefin resin composition of the present invention (C) comprises 85 to 50% by mass of ultrahigh-molecular weight polyethylene (A) having a specific intrinsic viscosity and 15 to 50% by mass of a polymer (B) containing a repeating unit derived from 4-methyl-1-pentene, in 100% by mass of the polyolefin resin composition (C).Type: ApplicationFiled: November 18, 2009Publication date: August 25, 2011Applicant: Mitsui Chemicals, Inc.Inventors: Shota Abe, Atsushi Morita, Kazuto Sugiyama, Mineo Kubo
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Publication number: 20100074083Abstract: Provided are a resin composition comprising 100 parts by mass of the polymer having an alicyclic structure at least in a part of a repeating structural unit and 0.05 to 5 parts by mass of a hindered amine compound having a carbon atom at a ratio of from 67% by weight to 80% by weight in the molecular structure and having a molecular weight of from 500 to 3500, a novel piperidine derivative having a piperidylaminotriazine skeleton, a molded product such as an optical component obtained by molding the resin composition, and an optical pickup device which employs the optical component.Type: ApplicationFiled: October 11, 2007Publication date: March 25, 2010Applicant: MITSUI CHEMICALS, INC.Inventors: Atsushi Shibuya, Yukihiro Kumamoto, Masaru Wada, Shota Abe, Yuji Terado, Naruyoshi Mita, Kaori Matoishi