Patents by Inventor Nagayoshi Kobayashi
Nagayoshi Kobayashi 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: 8980450Abstract: A lubricant containing a compound (A) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a polar group at each of opposite terminals thereof, and a compound (B) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a nonpolar group at at least one terminal thereof —(CF2CF2CF2O)a-??(1) wherein a is a real number of 5 to 30.Type: GrantFiled: January 30, 2014Date of Patent: March 17, 2015Assignee: MORESCO CorporationInventor: Nagayoshi Kobayashi
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Patent number: 8936859Abstract: A cyclophosphazene compound of the formula (I), and lubricants and magnetic disks using the compound wherein n is 2, 3 or 4, m is an integer of 1 to 12, R is C1-4 fluoroalkyl and Rf is —CF2O(CF2CF2O)x(CF2O)yCF2— or —CF2CF2O(CF2CF2CF2O)zCF2CF2— in which x, y and z are each 0 or a positive real number to give a number average molecular weight of 500 to 4000 to a fluoropolyether of the formula HOCH2—Rf—CH2OH including said Rf, the fluoropolyether having a molecular weight distribution (PD) of 1.0 to 1.5.Type: GrantFiled: April 20, 2011Date of Patent: January 20, 2015Assignee: Moresco CorporationInventors: Tsuyoshi Shimizu, Nagayoshi Kobayashi
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Publication number: 20140147699Abstract: A lubricant containing a compound (A) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a polar group at each of opposite terminals thereof, and a compound (B) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a nonpolar group at at least one terminal thereof —(CF2CF2CF2O)a-??(1) wherein a is a real number of 5 to 30.Type: ApplicationFiled: January 30, 2014Publication date: May 29, 2014Applicant: MORESCO CorporationInventor: Nagayoshi KOBAYASHI
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Patent number: 8734966Abstract: A compound of the formula (1), lubricant containing the compound and magnetic disk R1—C6H4O—CH2CH(OH)CH2OCH2—R2—CH2—O—R3??(1) wherein R1 is hydrogen, alkoxyl having 1 to 4 carbon atoms, amino or amido, R2 is —CF2O(CF2CF2O)x(CF2O)yCF2—, —CF2CF2O(CF2CF2CF2O)z—CF2CF2— or —CF2CF2CF2O(CF2CF2CF2CF2O)nCF2CF2CF2—, x and y are each an integer of 0 to 15, z is an integer of 1 to 15, n is an integer of 0 to 4, R3 is —CH2CH(OH)CH2OH, —CH2CH(OH)CH2OCH2CH(OH)CH2OH or —(CH2)mOH, m is an integer of 2 to 6.Type: GrantFiled: February 13, 2013Date of Patent: May 27, 2014Assignee: Moresco CorporationInventors: Ryosuke Sagata, Tsuyoshi Shimizu, Tomomi Hatta, Nagayoshi Kobayashi
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Patent number: 8679656Abstract: A lubricant containing a compound of the formula (I) wherein n is substantially 2, 3 or 4, R is C1-4 fluoroalkyl and Rf is —CF2O(CF2CF2O)x(CF2O)yCF2— or —CF2CF2O(CF2CF2CF2O)zCF2CF2— in which x, y and z are each 0 or a positive real number to give a number average molecular weight of 500 to 2000 to a fluoropolyether of the formula HOCH2—Rf—CH2OH including said Rf, the fluoropolyether having a molecular weight distribution (PD, weight average molecular weight/number average molecular weight) of 1.0 to 1.5.Type: GrantFiled: September 3, 2009Date of Patent: March 25, 2014Assignee: Moresco CorporationInventors: Nagayoshi Kobayashi, Tsuyoshi Shimizu
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Patent number: 8679655Abstract: A lubricant containing a compound (A) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a polar group at each of opposite terminals thereof, and a compound (B) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a nonpolar group at least one terminal thereof —(CF2CF2CF2O)a-??(1) wherein a is a real number of 5 to 30.Type: GrantFiled: November 18, 2008Date of Patent: March 25, 2014Assignee: Moresco CorporationInventor: Nagayoshi Kobayashi
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Patent number: 8668995Abstract: A compound of the formula (1), lubricant containing the compound and magnetic disk C6H4—(O—Z—R—X)2??(1) wherein Z is —CH2CH2O— or —CH2CH(OH)CH2O—, R is —CH2CF2CF2CF2O(CF2CF2CF2CF2O)nCF2CF2CF2CH2—, n is a real number of 0 to 20, X is —OH, —O(CH2)mOH, —OCH2CH(OH)CH2OH, —OCH2CH(OH)CH2O—C6H5 or —OCH2CH(OH)CH2O—C6H4—OCH3, m is an integer of 1 to 6.Type: GrantFiled: June 4, 2012Date of Patent: March 11, 2014Assignee: Moresco CorporationInventors: Tsuyoshi Shimizu, Nagayoshi Kobayashi
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Publication number: 20140065443Abstract: A compound of the formula (1), lubricant containing the compound and magnetic disk (P3N3)—[R1-R2]6??(1) wherein R1 is —OCH2CF2O(CF2CF2O)x(CF2O)yCF2CH2O—, or —OCH2CF2CF2O(CF2CF2CF2O)ZCF2CH2O— or —OCH2CF2CF2CF2O(CF2CF2CF2CF2O)nCF2CF2CF2CH2O—, x and y are each an integer of 0 to 15, z is an integer of 1 to 15, n is an integer of 0 to 20, R2 is hydrogen, hydroxyalkyl, amino or amido.Type: ApplicationFiled: July 24, 2013Publication date: March 6, 2014Applicant: MORESCO CorporationInventors: Ryosuke SAGATA, Nagayoshi KOBAYASHI
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Publication number: 20130034749Abstract: A cyclophosphazene compound of the formula (I), and lubricants and magnetic disks using the compound wherein n is 2, 3 or 4, m is an integer of 1 to 12, R is C1-4 fluoroalkyl and Rf is —CF2O(CF2CF2O)x(CF2O)yCF2— or —CF2CF2O(CF2CF2CF2O)zCF2CF2— in which x, y and z are each 0 or a positive real number to give a number average molecular weight of 500 to 4000 to a fluoropolyether of the formula HOCH2-Rf-CH2OH including said Rf, the fluoropolyether having a molecular weight distribution (PD) of 1.0 to 1.5.Type: ApplicationFiled: April 20, 2011Publication date: February 7, 2013Inventors: Tsuyoshi Shimizu, Nagayoshi Kobayashi
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Publication number: 20120315504Abstract: A compound of the formula (1), lubricant containing the compound and magnetic disk C6H4—(O—Z—R—X)2??(1) wherein Z is —CH2CH2O— or —CH2CH(OH)CH2O—, R is —CH2CF2CF2CF2O(CF2CF2CF2CF2O)nCF2CF2CF2CH2—, n is a real number of 0 to 20, X is —OH, —O(CH2)mOH, —OCH2CH(OH)CH2OH, —OCH2CH(OH)CH2O—C6H5 or —OCH2CH(OH)CH2O—C6H4—OCH3, m is an integer of 1 to 6.Type: ApplicationFiled: June 4, 2012Publication date: December 13, 2012Inventors: Tsuyoshi SHIMIZU, Nagayoshi KOBAYASHI
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Patent number: 8039132Abstract: A compound of the formula (I), and lubricant, and magnetic disk each using the same A-(CH2—Rf—CH2O—B—O)n—CH2—Rf—CH2-A??(I) wherein n is an integer of 1 to 4, A is a group of the formula (a) below, and B is a group of the formula (b) below, p being 1 or 2, R being C1-4 fluoroalkyl, Rf is —CF2O(CF2CF2O)x(CF2O)yCF2— or —CF2CF2O(CF2CF2CF2O)zCF2CF2—, x, y and z being each a real number of 0 to 50.Type: GrantFiled: May 9, 2008Date of Patent: October 18, 2011Assignee: Moresco CorporationInventors: Tsuyoshi Shimizu, Kazunori Shirai, Nagayoshi Kobayashi
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Publication number: 20110143165Abstract: A lubricant containing a compound of the formula (I) wherein n is substantially 2, 3 or 4, R is C1-4 fluoroalkyl and Rf is —CF2O(CF2CF2O)x(CF2O)yCF2— or —CF2CF2O(CF2CF2CF2O)zCF2CF2— in which x, y and z are each 0 or a positive real number to give a number average molecular weight of 500 to 2000 to a fluoropolyether of the formula HOCH2—Rf—CH2OH including said Rf, the fluoropolyether having a molecular weight distribution (PD, weight average molecular weight/number average molecular weight) of 1.0 to 1.5.Type: ApplicationFiled: September 3, 2009Publication date: June 16, 2011Applicant: MORESCO CORPORATIONInventors: Nagayoshi Kobayashi, Tsuyoshi Shimizu
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Publication number: 20100239887Abstract: A lubricant containing a compound (A) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a polar group at each of opposite terminals thereof, and a compound (B) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a nonpolar group at least one terminal thereof —(CF2CF2CF2O)a-??(1) wherein a is a real number of 5 to 30.Type: ApplicationFiled: November 18, 2008Publication date: September 23, 2010Inventor: Nagayoshi Kobayashi
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Publication number: 20100136371Abstract: A compound of the formula (I), and lubricant, and magnetic disk each using the same A-(CH2—Rf—CH2O—B—O)n—CH2—Rf—CH2-A??(I) wherein n is an integer of 1 to 4, A is a group of the formula (a) below, and B is a group of the formula (b) below, p being 1 or 2, R being C1-4 fluoroalkyl, Rf is —CF2O(CF2CF2O)x(CF2O)yCF2— or —CF2CF2O(CF2CF2CF2O)nCF2CF2—, x, y and z being each a real number of 0 to 50.Type: ApplicationFiled: May 9, 2008Publication date: June 3, 2010Inventors: Tsuyoshi Shimizu, Kazunori Shirai, Nagayoshi Kobayashi
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Publication number: 20060052262Abstract: A compound of the formula (I), a lubricant and a magnetic disk using the compound A—CH2CF2O(CF2CF2O)m-(CF2O)n-CF2CH2—B ??(I) wherein A is amino group having hydroxyl group, B is hydroxyl group, or amino group having or not having hydroxyl group, wherein m is a real number of 5 to 36, and n is a real number of from 4 to 30.Type: ApplicationFiled: October 1, 2003Publication date: March 9, 2006Applicant: MATSUMURA OIL RESEARCH CORP.Inventors: Tamio Akada, Nagayoshi Kobayashi, Yoshinobu Fujii
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Patent number: 6608009Abstract: A phosphazene compound of the formula (1) or (5) which has an arrangement such that perfluoroxyalkylene units selected from —CF2O— and —CF2CF2O— are randomly distributed, the compound having a functional terminal group A or group G A—OCH2CF2O(CF2CF2O)p(CF2O)qCF2CH2O—A (1) G—[OCH2CF2O(CF2CF2O)p(CF2O)qCF2CH2OH]6-z (5) wherein A is a group of the formula (a) and G is a group of the formula (g) shown in the specification, and a lubricant containing at least one of the phosphazene compounds of the formulas (1) and (5).Type: GrantFiled: March 20, 2002Date of Patent: August 19, 2003Assignee: Matsumura Oil Research Corp.Inventors: Tamio Akada, Yoshinobu Fujii, Nagayoshi Kobayashi, Rie Fujimoto
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Patent number: 6541431Abstract: The present invention provides a lubricant for magnetic recording medium which comprises, as an effective component, a phosphazene compound of formula [N═P[O(C6H4)—(A)z—R]a[OCH2—(B)xH]b]y (1) wherein A is —C6H4— or —OC6H4—, B is fluorine-containing alkylene group, R is hydrogen atom, fluorine atom, C1-4 alkyl, C1-4 alkoxy or C1-4 haloalkyl, a and b are a real number of 0 to 2, satisfying a+b=2, x is 1, 2, 3 or 4, y is 3 or 4, and z is 0 or 1.Type: GrantFiled: January 22, 2001Date of Patent: April 1, 2003Assignee: Matsumura Oil Research Corp.Inventors: Tamio Akada, Yoshinobu Fujii, Nagayoshi Kobayashi, Rie Fujimoto
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Publication number: 20020183211Abstract: A phosphazene compound of the formula (1) or (5) which has an arrangement such that perfluoroxyalkylene units selected from —CF2O— and —CF2CF2O— are randomly distributed, the compound having a functional terminal group A or group GType: ApplicationFiled: March 20, 2002Publication date: December 5, 2002Inventors: Tamio Akada, Yoshinobu Fujii, Nagayoshi Kobayashi, Rie Fujimoto