Patents by Inventor Naoya Fukumoto

Naoya Fukumoto 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).

  • Publication number: 20200283392
    Abstract: Provided is a fluorine-containing ether compound capable of forming a lubricant layer having excellent wear resistance even when the thickness is thin, and suitable as a material of a lubricant for a magnetic recording medium. The fluorine-containing ether compound is a compound represented by the following formula (1): R1—R2—CH2—R3—CH2—R4—R5; wherein R3 is a perfluoropolyether chain; R1 is a terminal group bonded to R2; R5 is a terminal group bonded to R4; R1 is an alkenyl group or an alkynyl group; R5 is a group containing a heterocyclic ring; R2 is represented by the following formula (2); R4 is represented by the following formula (3); and a in the formula (2) and b in the formula (3) are each independently an integer of 1 to 3.
    Type: Application
    Filed: August 28, 2018
    Publication date: September 10, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Tsuyoshi KATO, Daisuke YAGYU, Naoya FUKUMOTO, Yuta YAMAGUCHI, Masumi KURITANI, Katsumi MUROFUSHI, Masaki NANko, Hiroyuki TOMITA
  • Publication number: 20200263104
    Abstract: A fluorine-containing ether compound represented by a formula (1) shown below. R4—CH2—R3—CH2—R2—CH2—R1—CH2—R2—CH2—R3—CH2—R5??(1) In formula (1), R1 and R3 represent the same or different perfluoropolyether chains, R2 represents a linking group containing at least one polar group, one or both of R4 and R5 represent a terminal group containing two or more polar groups, and R4 and R5 are different.
    Type: Application
    Filed: February 20, 2017
    Publication date: August 20, 2020
    Inventors: Yuta YAMAGUCHI, Naoya FUKUMOTO, Naoko ITO, Hiroyuki TOMITA, Ichiro OTA, Katsumi MUROFUSHI
  • Publication number: 20200010619
    Abstract: A fluorine-containing ether compound of the present invention is represented by the following General Formula (1). (In the General Formula (1), X is a trivalent atom or a trivalent atom group, A is a linking group including at least one polar group, B is a linking group having a perfluoropolyether chain, and D is a polar group or a substituent having a polar group at the end.) [Chem.
    Type: Application
    Filed: February 6, 2018
    Publication date: January 9, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Takuya MINAMI, Yoshishige OKUNO, Yuta YAMAGUCHI, Ryuuta MIYASAKA, Naoya FUKUMOTO, Hiroko HATTORI, Hiroyuki TOMITA, Michio SERI, Naoko ITO, Ichiro OTA, Katsumi MUROFUSHI
  • Publication number: 20200002258
    Abstract: A fluorine-containing ether compound according to the present invention is a fluorine-containing ether compound represented by the following General Formula (1). [Chem.
    Type: Application
    Filed: February 8, 2018
    Publication date: January 2, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Naoya FUKUMOTO, Ryuuta MIYASAKA, Hiroyuki TOMITA, Michio SERI, Naoko ITO, Katsumi MUROFUSHI
  • Publication number: 20200005824
    Abstract: A lubricant for a magnetic recording medium capable of forming a lubricant layer having excellent adhesion to a protective layer is provided. A lubricant for a magnetic recording medium contains a fluorine-containing ether compound in which a group having an ethylenic carbon-carbon double bond is disposed at one or both terminals of a perfluoroalkyl polyether chain. It is preferable that the group having the ethylenic carbon-carbon double bond is disposed at one terminal of the perfluoroalkyl polyether chain, and a hydroxyl group is disposed at other terminal. It is preferable that the lubricant for a magnetic recording medium contains a compound in which one or more functional groups selected from a hydroxyl group, an amino group, an amido group and a carboxyl group is disposed at one or both terminals of a perfluoroalkyl polyether chain.
    Type: Application
    Filed: February 20, 2018
    Publication date: January 2, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Hiroyuki TOMITA, Hiroko HATTORI, Naoya FUKUMOTO, Ryuuta MIYASAKA, Naoko ITO, Ichiro OTA, Katsumi MUROFUSHI
  • Publication number: 20190382675
    Abstract: A fluorine-containing ether compound represented by Formula (1) is provided; R1—R2—CH2—R3—CH2—R4—R5??(1) (In Formula (1), R1 and R5 may be the same as or different from each other and each represents an alkenyl group having 2 to 8 carbon atoms or an alkynyl group having 3 to 8 carbon atoms, R2 and R4 may be the same as or different from each other and each represents a divalent linking group having a polar group, and R3 represents a perfluoropolyether chain, with a proviso that R1 and R2 are, and R4 and R5 are divided due to the presence of an atom other than the carbon atom such as an oxygen atom).
    Type: Application
    Filed: December 4, 2017
    Publication date: December 19, 2019
    Applicant: SHOWA DENKO K.K.
    Inventors: Naoya FUKUMOTO, Daisuke YAGYU, Yuta YAMAGUCHI, Shoko UETAKE, Tsuyoshi KATO, Hiroyuki TOMITA, Ryuuta MIYASAKA, Katsumi MUROFUSHI
  • Publication number: 20190382676
    Abstract: A fluorine-containing ether compound represented by Formula (1) is provided. R1—R2—CH2—R3—CH2—R4—R5 ??(1) (In Formula (1), R1 and R5 each represents a group having a heterocyclic ring and may be the same as or different from each other, R2 and R4 each represents a divalent linking group having a polar group and play be the same as or different from each other, and R3 represents a perfluoropolyether chain.
    Type: Application
    Filed: January 5, 2018
    Publication date: December 19, 2019
    Applicant: SHOWA DENKO K.K.
    Inventors: Yuta YAMAGUCHI, Daisuke YAGYU, Naoya FUKUMOTO, Shoko UETAKE, Tsuyoshi KATO, Hiroyuki TOMITA, Ryuuta MIYASAKA, Katsumi MUROFUSHI
  • Publication number: 20190084911
    Abstract: The present invention relates to a fluorine-containing ether compound represented by Formula (1), R1—R2—CH2—R3—CH2—R4??(1). (In Formula (1), R1 is an end group including an organic group having at least one double bond or triple bond, R2 is a divalent linking group bonded to R1 by etheric oxygen, R3 is a perfluoropolyether chain, R4 is an end group having two or three polar groups with each polar group being bonded to different carbon atoms, and the carbon atoms, to which the polar groups are bonded, being bonded to each other via a linking group including carbon atoms to which the polar groups are not bonded.
    Type: Application
    Filed: January 30, 2017
    Publication date: March 21, 2019
    Applicant: SHOWA DENKO K.K.
    Inventors: Daisuke YAGYU, Yuta YAMAGUCHI, Naoya FUKUMOTO, Tsuyoshi KATO, Shoko UETAKE, Hiroyuki TOMITA, Ryuuta MIYASAKA, Naoko ITO, Ichiro OTA, Katsumi MUROFUSHI
  • Publication number: 20180047419
    Abstract: A fluorine-containing ether compound of the present invention is represented by Formula (1). R1—CH2—R2—CH2—R3??(1) (In Formula (1), R1 is an organic end group having 3 or more carbon atoms which includes two or more polar groups with each polar group being bonded to different carbon atoms and the carbon atoms to which the polar groups are bonded being bonded to each other via a linking group including the carbon atoms which are not bonded to the polar groups, R2 includes a perfluoropolyether chain represented by Formula (3), and R3 is a hydroxyl group or R1) —(CF2)y-1—O—((CF2)yO)z—(CF2)y-1—??(3) (In Formula (3), y represents an integer of 2 to 4, and z represents an integer of 1 to 30).
    Type: Application
    Filed: July 31, 2017
    Publication date: February 15, 2018
    Applicant: SHOWA DENKO K.K.
    Inventors: Naoya FUKUMOTO, Daisuke YAGYU, Yuta YAMAGUCHI, Shoko UETAKE, Tsuyoshi KATO, Hiroyuki TOMITA, Ryuta MIYASAKA, Katsumi MUROFUSHI
  • Publication number: 20180009773
    Abstract: This fluorine-containing ether compound is represented by Formula (1). R1—R2—CH2—R3—CH2—R4—R5??(1) (in Formula (1), R1 is an aryl group or an aralkyl group, R2 is a divalent linking group having 0 or 1 polar group, R3 is a perfluoropolyether chain, R4 is a divalent linking group having 2 or 3 polar groups, and R5 is an aryl group or an aralkyl group.
    Type: Application
    Filed: July 3, 2017
    Publication date: January 11, 2018
    Applicant: SHOWA DENKO K.K.
    Inventors: Shoko UETAKE, Naoya FUKUMOTO, Daisuke YAGYU, Yuta YAMAGUCHI, Naoko ITO, Hiroyuki TOMITA, Ryuta MIYASAKA, Katsumi MUROFUSHI
  • Patent number: 9440907
    Abstract: Provided is a method for producing a 2-alkenylamine compound efficiently and at low cost, using a primary or secondary amine compound and a 2-alkenyl compound as the starting materials therefor. The 2-alkenylamine compound is produced by adding Bronsted acid when 2-alkenylating by reacting the primary or secondary amine compound with the 2-alkenyl compound, and 2-alkenylating in the presence of a catalyst comprising a complexing agent and a transition metal precursor stabilized by a monovalent anionic five-membered conjugated diene.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: September 13, 2016
    Assignees: SHOWA DENKO K.K., NATIONAL UINVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Yoshitaka Ishibashi, Naoya Fukumoto, Masato Kitamura
  • Patent number: 9346740
    Abstract: Provided is a method for producing a 2-alkenylamine compound efficiently and at low cost, using a primary or secondary amine compound and a 2-alkenyl compound as the starting materials therefor. The 2-alkenyleamine compound is produced by 2-alkenylating a primary or secondary amine compound, using a specified 2-alkenylating agent and in the presence of a catalyst comprising a complexing agent and a transition metal precursor stabilized by a monovalent anionic five-membered conjugated diene.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: May 24, 2016
    Assignees: SHOWA DENKO K.K., NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Yoshitaka Ishibashi, Naoya Fukumoto, Masato Kitamura
  • Patent number: 8993791
    Abstract: To provide an efficient method of producing an epoxy compound comprising reacting hydrogen peroxide and acetonitrile with the carbon-carbon double bond of an organic compound having a carbon-carbon double bond. A method of producing an epoxy compound comprising epoxidizing the carbon-carbon double bond of an organic compound having a carbon-carbon double bond in the presence of acetonitrile by using hydrogen peroxide as an oxidizing agent, wherein the reaction proceeds while controlling the acetonitrile concentration in the reaction system in the range of 0.6-5 mol/L by using a solvent containing an alcohol.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: March 31, 2015
    Assignee: Showa Denko K.K.
    Inventors: Hiroshi Uchida, Takamitsu Kobayashi, Naoya Fukumoto
  • Publication number: 20140200345
    Abstract: Provided is a method for producing a 2-alkenylamine compound efficiently and at low cost, using a primary or secondary amine compound and a 2-alkenyl compound as the starting materials therefor. The 2-alkenyleamine compound is produced by 2-alkenylating a primary or secondary amine compound, using a specified 2-alkenylating agent and in the presence of a catalyst comprising a complexing agent and a transition metal precursor stabilized by a monovalent anionic five-membered conjugated diene.
    Type: Application
    Filed: August 29, 2012
    Publication date: July 17, 2014
    Applicants: NATIONAL UNIV. CORP. NAGOYA UNIVERSITY, SHOWA DENKO K.K.
    Inventors: Yoshitaka Ishibashi, Naoya Fukumoto, Masato Kitamura
  • Publication number: 20140171687
    Abstract: Provided is a method for producing a 2-alkenylamine compound efficiently and at low cost, using a primary or secondary amine compound and a 2-alkenyl compound as the starting materials therefor. The 2-alkenylamine compound is produced by adding Bronsted acid when 2-alkenylating by reacting the primary or secondary amine compound with the 2-alkenyl compound, and 2-alkenylating in the presence of a catalyst comprising a complexing agent and a transition metal precursor stabilized by a monovalent anionic five-membered conjugated diene.
    Type: Application
    Filed: August 29, 2012
    Publication date: June 19, 2014
    Applicants: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, SHOWA DENKO K.K.
    Inventors: Yoshitaka Ishibashi, Naoya Fukumoto, Masato Kitamura
  • Publication number: 20120302775
    Abstract: To provide an efficient method of producing an epoxy compound comprising reacting hydrogen peroxide and acetonitrile with the carbon-carbon double bond of an organic compound having a carbon-carbon double bond. A method of producing an epoxy compound comprising epoxidizing the carbon-carbon double bond of an organic compound having a carbon-carbon double bond in the presence of acetonitrile by using hydrogen peroxide as an oxidizing agent, wherein the reaction proceeds while controlling the acetonitrile concentration in the reaction system in the range of 0.6-5 mol/L by using a solvent containing an alcohol.
    Type: Application
    Filed: December 17, 2010
    Publication date: November 29, 2012
    Applicant: SHOWA DENKO K.K.
    Inventors: Hiroshi Uchida, Takamitsu Kobayashi, Naoya Fukumoto