Patents by Inventor Yuji Onuki
Yuji Onuki 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: 10357908Abstract: Provided are: a method for efficiently manufacturing an abrasion-resistant resin substrate with a hard coating film with adhesiveness and weather resistance obtained by sequentially laminating a primer layer and a hard coating layer on a resin substrate without decreasing the adhesiveness and the weather resistance; and a resin substrate with hard coat film obtained by this method. A method for manufacturing a resin substrate with a hard coating film having a primer layer and a hard coating layer, includes: a step of forming a primer layer containing an acrylic polymer on one main surface of a resin film to obtain a resin film laminate; a step of forming a resin substrate by injection molding on another main surface of the resin film in the resin film laminate; and a step of applying a hard coating layer forming composition on the primer layer and curing the hard coating layer forming composition.Type: GrantFiled: April 5, 2016Date of Patent: July 23, 2019Assignee: AGC Inc.Inventors: Hitoshi Tsujimura, Yuji Yamamoto, Kazuhiro Onuki
-
Patent number: 10336964Abstract: The invention provides a grease composition suitable for being packed in roll bearings to be lubricated at elevated temperatures and a bearing in which the above-mentioned grease composition is packed. In the grease composition containing a base oil, a urea-containing thickener and an additive, the additive includes an overbased metal sulfonate and the amount of the overbased metal sulfonate is 0.05 to 1.00 mass % with respect to the total amount of the grease composition. The bearing has the above-mentioned grease composition sealed therein.Type: GrantFiled: September 28, 2009Date of Patent: July 2, 2019Assignee: KYODO YUSHI CO., LTD.Inventors: Yutaka Imai, Yuji Onuki
-
Patent number: 10005980Abstract: A grease is provided which has an improved inflow property of the grease into a lubrication unit and has a long life when used for bearings even under a high temperature environment. A grease composition comprising a base oil and a thickener, characterized in that the base oil contains an ester synthetic oil, the content of the ester synthetic oil is not less than 20% by mass of the total mass of the base oil and the thickener contains a diurea compound represented by the Formula (I): R1—NHCONH—R2—NHCONH—R3,??(I) wherein R2 is a C6-15 divalent aromatic hydrocarbon group, R1 and R3 are the same or different, and represent cyclohexyl or C8-22 linear or branched alkyl, and the molar ratio of cyclohexyl to the total of cyclohexyl and C8-22 linear or branched alkyl is 60 to 95%.Type: GrantFiled: April 22, 2015Date of Patent: June 26, 2018Assignee: KYODO YUSHI CO., LTD.Inventors: Toshiaki Endo, Yuji Onuki, Yutaka Imai
-
Publication number: 20160305488Abstract: The invention provides a grease composition for constant velocity joints, which contains (a) a base oil, (b) a diurea thickener, (c) benzotriazole and/or a derivative thereof, and (d) a phosphate and/or an amine salt thereof; and a constant velocity joint where the grease composition is packed.Type: ApplicationFiled: December 4, 2014Publication date: October 20, 2016Applicants: KYODO YUSHI CO., LTD., NTN CORPORATIONInventors: Michitaka YOSHIHARA, Yuji ONUKI, Mika KOHARA, Shinichi TAKABE
-
Publication number: 20150225668Abstract: A grease is provided which has an improved inflow property of the grease into a lubrication unit and has a long life when used for bearings even under a high temperature environment. A grease composition comprising a base oil and a thickener, characterized in that the base oil contains an ester synthetic oil, the content of the ester synthetic oil is not less than 20% by mass of the total mass of the base oil and the thickener contains a diurea compound represented by the Formula (I): R1—NHCONH—R2—NHCONH—R3,??(I) wherein R2 is a C6-15 divalent aromatic hydrocarbon group, R1 and R3 are the same or different, and represent cyclohexyl or C8-22 linear or branched alkyl, and the molar ratio of cyclohexyl to the total of cyclohexyl and C8-22 linear or branched alkyl is 60 to 95%.Type: ApplicationFiled: April 22, 2015Publication date: August 13, 2015Inventors: Toshiaki ENDO, Yuji ONUKI, Yutaka IMAI
-
Patent number: 9085744Abstract: A grease is provided which has an improved inflow property of the grease into a lubrication unit and has a long life when used for bearings even under a high temperature environment. A grease composition comprising a base oil and a thickener, characterized in that the base oil contains an ester synthetic oil, the content of the ester synthetic oil is not less than 20% by mass of the total mass of the base oil and the thickener contains a diurea compound represented by the Formula (I): R1—NHCONH—R2—NHCONH—R3,??(I) wherein R2 is a C6-15 divalent aromatic hydrocarbon group, R1 and R3 are the same or different, and represent cyclohexyl or C8-22 linear or branched alkyl, and the molar ratio of cyclohexyl to the total of cyclohexyl and C8-22 linear or branched alkyl is 60 to 95%.Type: GrantFiled: April 24, 2007Date of Patent: July 21, 2015Assignee: KYODO YUSHI CO., LTD.Inventors: Toshiaki Endo, Yuji Onuki, Yutaka Imai
-
Publication number: 20140336090Abstract: The invention provides a grease composition which contains (a) a base oil, (b) a thickener, (c) a compound having an alkylthiocarbamoyl group, represented by the formula (1), (d) a hindered phenol antioxidant, and (e) a metal deactivator; wherein R1, R2, R3 and R4 are each independently an alkyl group having 1 to 20 carbon groups, and X represents S, S—S, S—CH2—S, S—CH2CH2—S or S—CH2CH2CH2—S.Type: ApplicationFiled: January 18, 2013Publication date: November 13, 2014Inventors: Osamu Saita, Yuji Onuki, Masamichi Yamamoto
-
Patent number: 8853140Abstract: The invention provides a grease composition comprising a base oil consisting of a fluorinated oil and an antirust agent, wherein said antirust agent comprises an aliphatic dibasic acid salt of the formula (1) in an amount of not less than 0.1% by mass and less than 1.0% by mass based on the total mass of the grease composition: (CH2)n(COO)2Mm??(1) wherein n is an integer of 1 to 19, M is an alkali or alkaline earth metal, m is 2 when M is an alkali metal and m is 1 when M is an alkaline earth metal, and a bearing wherein the grease is packed. The grease exerts less effects on the environment. It is low in evaporation loss at a high temperature, shows good antirust property and can be suitably used in a ball bearing operated at a high temperature.Type: GrantFiled: July 5, 2007Date of Patent: October 7, 2014Assignee: Kyodo Yushi Co., Ltd.Inventors: Kenichiro Matsubara, Yuji Onuki
-
Patent number: 8518864Abstract: A grease composition for constant-velocity joints which is inexpensive and which and which has an improved anti-flaking property without using materials which have environmental burdens, and a constant-velocity joint enclosing this grease are provided. A grease composition for constant-velocity joints comprising: (a) a base oil, (b) a diurea thickener, (c) a zinc dialkyldithiophosphate, (d) a sulfurized molybdenum dialkyldithiocarbamate, (e) a zinc dialkyldithiocarbamate, and (f) a sulfur-nitrogen extreme pressure additive is provided.Type: GrantFiled: May 30, 2008Date of Patent: August 27, 2013Assignees: Kyodo Yushi Co., Ltd., NTN CorporationInventors: Daigo Nagumo, Yuji Onuki, Shinya Kondo, Shin Tomogami, Shinichi Takabe
-
Publication number: 20110183876Abstract: The invention provides a grease composition suitable for being packed in roll bearings to be lubricated at elevated temperatures and a bearing in which the above-mentioned grease composition is packed. In the grease composition containing a base oil, a urea-containing thickener and an additive, the additive includes an overbased metal sulfonate and the amount of the overbased metal sulfonate is 0.05 to 1.00 mass % with respect to the total amount of the grease composition. The bearing has the above-mentioned grease composition sealed therein.Type: ApplicationFiled: September 28, 2009Publication date: July 28, 2011Inventors: Yutaka Imai, Yuji Onuki
-
Publication number: 20100173807Abstract: A grease composition for constant-velocity joints which is inexpensive and which and which has an improved anti-flaking property without using materials which have environmental burdens, and a constant-velocity joint enclosing this grease are provided. A grease composition for constant-velocity joints comprising: (a) a base oil, (b) a diurea thickener, (c) a zinc dialkyldithiophosphate, (d) a sulfurized molybdenum dialkyldithiocarbamate, (e) a zinc dialkyldithiocarbamate, and (f) a sulfur-nitrogen extreme pressure additive is provided.Type: ApplicationFiled: May 30, 2008Publication date: July 8, 2010Inventors: Daigo Nagumo, Yuji Onuki, Shinya Kondo, Shin Tomogami, Shinichi Takabe
-
Publication number: 20100093567Abstract: A grease is provided which has an improved inflow property of the grease into a lubrication unit and has a long life when used for bearings even under a high temperature environment. A grease composition comprising a base oil and a thickener, characterized in that the base oil contains an ester synthetic oil, the content of the ester synthetic oil is not less than 20% by mass of the total mass of the base oil and the thickener contains a diurea compound represented by the Formula (I): R1—NHCONH—R2—NHCONH—R3,??(I) wherein R2 is a C6-15 divalent aromatic hydrocarbon group, R1 and R3 are the same or different, and represent cyclohexyl or C8-22 linear or branched alkyl, and the molar ratio of cyclohexyl to the total of cyclohexyl and C8-22 linear or branched alkyl is 60 to 95%.Type: ApplicationFiled: April 24, 2007Publication date: April 15, 2010Applicant: KYODO YUSHI CO., LTD.Inventors: Toshiaki Endo, Yuji Onuki, Yutaka Imai
-
Publication number: 20090325827Abstract: The invention provides a grease composition comprising a base oil consisting of a fluorinated oil and an antirust agent, wherein said antirust agent comprises an aliphatic dibasic acid salt of the formula (1) in an amount of not less than 0.1% by mass and less than 1.0% by mass based on the total mass of the grease composition; (CH2)n(COO)2Mm??(1) wherein n is an integer of 1 to 19, M is an alkali or alkaline earth metal, m is 2 when M is an alkali metal and m is 1 when M is an alkaline earth metal, and a bearing wherein the grease is packed. The grease exerts less effects on the environment. It is low in evaporation loss at a high temperature, shows good antirust property and can be suitably used in a ball bearing operated at a high temperature.Type: ApplicationFiled: July 5, 2007Publication date: December 31, 2009Inventors: Kenichiro Matsubara, Yuji Onuki
-
Publication number: 20080318819Abstract: A grease composition which is suitable for a ball bearing exposed to high temperatures and exhibits stable lubricity for a prolonged period of time, and a bearing which encapsulates the grease composition are provided. A grease composition comprising (a) a base oil, (b) a thickener, (c) a compound having alkylthiocarbamoyl group of the general formula (1), and an amine-ketone condensate-based antioxidant. A grease composition further comprising (e) a metal inactivator.Type: ApplicationFiled: September 8, 2008Publication date: December 25, 2008Inventors: Osamu SAITA, Yuji Onuki
-
Patent number: 6482779Abstract: A lubricating grease composition having a basic grease composition containing a synthetic oil as a base oil, and a lithium soap as a thickener. 0.5 to 10% by weight with respect to the basic grease composition total amount of at least one additive selected from the group consisting of an organic molybdenum compound, an organic fatty acid compound or an derivative thereof, and an organic phosphorus compound is added is provided. Accordingly, the present invention can provide a lubricating grease composition capable of providing excellent lubricating characteristics, fretting wear resistance property, and impact resistance property.Type: GrantFiled: March 21, 2001Date of Patent: November 19, 2002Assignees: NSK Ltd., Kyodo Yushi Co., Ltd.Inventors: Michiharu Naka, Atsushi Yokouchi, Koichi Hachiya, Toru Takamizawa, Jun Kuraishi, Yasunobu Fujita, Hiroshi Kimura, Akimi Kimura, Yuji Onuki
-
Publication number: 20020002119Abstract: A lubricating grease composition having a basic grease composition containing a synthetic oil as a base oil, and a lithium soap as a thickener. 0.5 to 10% by weight with respect to the basic grease composition total amount of at least one additive selected from the group consisting of an organic molybdenum compound, an organic fatty acid compound or an derivative thereof, and an organic phosphorus compound is added is provided. Accordingly, the present invention can provide a lubricating grease composition capable of providing excellent lubricating characteristics, fretting wear resistance property, and impact resistance property.Type: ApplicationFiled: March 21, 2001Publication date: January 3, 2002Inventors: Michiharu Naka, Atsushi Yokouchi, Koichi Hachiya, Toru Takamizawa, Jun Kuraishi, Yasunobu Fujita, Hiroshi Kimura, Akimi Kimura, Yuji Onuki
-
Patent number: 6136762Abstract: A method for preparing urea grease excellent in low noise properties comprises the step of adding a base oil in which an amine (or an isocyanate) is dissolved or dispersed, to a base oil in which an isocyanate (or an amine) is dissolved or dispersed, in the form of liquid drops having a diameter of not more than 300 .mu.m to react the isocyanate with the amine; or the step of directly contacting liquid drops comprising a base oil in which an isocyanate is dissolved or dispersed and having a diameter of not more than 300 .mu.m with liquid drops comprising a base oil in which an amine is dissolved or dispersed and having a diameter of not more than 300 .mu.m to react the isocyanate with the amine. The method permits the production of urea grease excellent in low noise properties at a low cost.Type: GrantFiled: February 28, 2000Date of Patent: October 24, 2000Assignee: Kyodo Yushi Co., Ltd.Inventors: Terasu Yoshinari, Yuji Onuki, Yoichi Suzuki, Hiroshi Kimura