Patents by Inventor Masami Kozawa

Masami Kozawa 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: 20230392037
    Abstract: The invention provides a composition for forming a coating film having an ability to suppress adhesion of biological substances, a coating film using the same, a substrate for cell culture using the same, a laminated film and a method for producing a cell aggregate(s). The composition for forming a coating film comprises a polymer containing unit structures represented by the formula (1) and the formula (2): wherein R1 to R3, X1, X2, T1, n1, n2 and n3 are as defined herein but not containing a polysiloxane skeleton, and a solvent.
    Type: Application
    Filed: October 22, 2021
    Publication date: December 7, 2023
    Applicant: NISSAN CHEMICAL CORPORATION
    Inventors: Miya HIROI, Shinsuke TADOKORO, Masami KOZAWA, Yoshiomi HIROI
  • Publication number: 20230242869
    Abstract: The invention provides a composition for forming a coating film having compatibility with a biological substance which comprises a block copolymer having unit structures represented by the formula (1) and the formula (2): (wherein R1 to R3, U1 and U2 each independently represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, X1 and X2 represent an alkylene group having 1 to 5 carbon atoms, and n1 represents an integer of 1 to 10), and a solvent. The invention also provides a coating film using the same, a substrate for cell culture using the same, a method for producing the substrate for cell culture, and a method for producing a cell aggregate.
    Type: Application
    Filed: June 9, 2021
    Publication date: August 3, 2023
    Applicant: NISSAN CHEMICAL CORPORATION
    Inventors: Miya HIROI, Shinsuke TADOKORO, Masami KOZAWA, Yoshiomi HIROI
  • Publication number: 20210340287
    Abstract: A polymer production method whereby: a flow reactor comprising a flow path wherein a plurality of liquids can be mixed is used; and a monomer is anionically polymerized in the presence of an initiator. The flow reactor comprises a mixer for mixing two liquids, said mixer comprising either a joint member having a double pipe therein or a static mixer member.
    Type: Application
    Filed: June 4, 2021
    Publication date: November 4, 2021
    Applicant: Nissan Chemical Corporation
    Inventors: Shinsuke TADOKORO, Masami KOZAWA
  • Publication number: 20210284782
    Abstract: A self-assembled film forming composition for forming a phase-separated structure of a block copolymer layer on a substrate, containing a block copolymer and a solvent, and is configured such that: the block copolymer is obtained by bonding a silicon-free polymer to a silicon-containing polymer that contains, as a constituent unit, styrene that is substituted by a silicon-containing group; the silicon-free polymer contains a structure derived from formula [1-1] or formula [1-2]; and the silicon-containing group contains one silicon atom. [In formula [1-1] or formula [1-2], each of R1 and R2 independently represents a hydrogen atom, a halogen atom or an alkyl group having 1-10 carbon atoms; and each of R3-R5 independently represents a hydrogen atom, a hydroxy group, a halogen atom, an alkyl group having 1-10 carbon atoms, an alkoxy group having 1-10 carbon atoms, a cyano group, an amino group, an amide group or a carbonyl group.
    Type: Application
    Filed: July 16, 2019
    Publication date: September 16, 2021
    Applicant: NISSAN CHEMICAL CORPORATION
    Inventors: Ryuta MIZUOCHI, Yasunobu SOMEYA, Hiroyuki WAKAYAMA, Masami KOZAWA, Shinsuke TADOKORO
  • Patent number: 11059912
    Abstract: A polymer production method whereby: a flow reactor comprising a flow path wherein a plurality of liquids can be mixed is used; and a monomer is anionically polymerized in the presence of an initiator. The flow reactor comprises a mixer for mixing two liquids, said mixer comprising either a joint member having a double pipe therein or a static mixer member.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: July 13, 2021
    Assignee: NISSAN CHEMICAL CORPORATION
    Inventors: Shinsuke Tadokoro, Masami Kozawa
  • Publication number: 20190262785
    Abstract: Provided is a method for producing a liquid medium composition, including using a junction conduit structure 10 having a structure in which a first inlet conduit 11 and a second inlet conduit 12 are joined together to form an outlet conduit 13, and flowing a first liquid 1 containing a particular compound into the first inflow conduit 11 and flowing a second liquid 2 containing a linking substance into the second inlet conduit 12, and allowing the flows of the both liquids to join together to mix the both liquids, thus forming a liquid medium composition 3 containing structures formed by the particular compound linked via the linking substance dispersed therein while being flown through the outlet conduit 13.
    Type: Application
    Filed: July 21, 2017
    Publication date: August 29, 2019
    Applicant: NISSAN CHEMICAL CORPORATION
    Inventors: Daisuke HATANAKA, Hisato HAYASHI, Shinsuke TADOKORO, Masami KOZAWA, Keisuke MORODOME
  • Publication number: 20190062464
    Abstract: A polymer production method whereby: a flow reactor comprising a flow path wherein a plurality of liquids can be mixed is used; and a monomer is anionically polymerized in the presence of an initiator. The flow reactor comprises a mixer for mixing two liquids, said mixer comprising either a joint member having a double pipe therein or a static mixer member.
    Type: Application
    Filed: February 3, 2017
    Publication date: February 28, 2019
    Applicant: Nissan Chemical Corporation
    Inventors: Shinsuke TADOKORO, Masami KOZAWA
  • Patent number: 8669367
    Abstract: To provide a method whereby a 2-azaadamantane can easily be obtained in good yield. A method for producing a 2-azaadamantane represented by the formula (1), which comprises cyclizing a compound represented by the following formula (2) in the presence of an acid.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: March 11, 2014
    Assignees: Nissan Chemical Industries, Ltd., Tohoku Techno Arch Co., Ltd.
    Inventors: Toshimasa Hamada, Noriaki Nagahama, Masami Kozawa, Yoshiharu Iwabuchi, Masatoshi Shibuya, Masaki Tomizawa, Yusuke Sasano
  • Patent number: 8329909
    Abstract: To provide a novel method for producing a 2-azaadamantane compound from a bicyclocarbamate compound. In accordance with the following scheme: a bicyclocarbamate compound represented by the formula (1) is reacted with a halogenating agent to produce a 2-azaadamantane carbamate compound represented by the formula (2), and the 2-azaadamantane carbamate compound is subjected to hydrogenolysis to produce a 2-azaadamantane compound represented by the formula (3) (in the formulae, R1 is hydrogen or the like, each of R2 and R3 which are independent of each other, is a hydrogen atom or a C1-6 alkyl group, Ar is an aryl group which may be substituted by Ra, Ra is halogen or the like, X is a halogen atom, and Y is X or a hydrogen atom).
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: December 11, 2012
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Masami Kozawa, Yuki Endo
  • Publication number: 20120310005
    Abstract: To provide a method whereby a 2-azaadamantane can easily be obtained in good yield. A method for producing a 2-azaadamantane represented by the formula (1), which comprises cyclizing a compound represented by the following formula (2) in the presence of an acid.
    Type: Application
    Filed: August 14, 2012
    Publication date: December 6, 2012
    Applicants: TOHOKU TECHNO ARCH CO., LTD., Nissan Chemical Industries, Ltd.
    Inventors: Toshimasa HAMADA, Noriaki NAGAHAMA, Masami KOZAWA, Yoshiharu IWABUCHI, Masatoshi SHIBUYA, Masaki TOMIZAWA, Yusuke SASANO
  • Patent number: 8273889
    Abstract: The invention provides a method for producing 2-azaadamantanes represented by formula (1) in good yields. The method includes cyclizing a compound represented by formula (2) in the presence of an acid.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: September 25, 2012
    Assignees: Nissan Chemical Industries, Ltd., Tohoku Techno Arch Co., Ltd.
    Inventors: Toshimasa Hamada, Noriaki Nagahama, Masami Kozawa, Yoshiharu Iwabuchi, Masatoshi Shibuya, Masaki Tomizawa, Yusuke Sasano
  • Publication number: 20120053348
    Abstract: To provide a novel method for producing a 2-azaadamantane compound from a bicyclocarbamate compound. In accordance with the following scheme: a bicyclocarbamate compound represented by the formula (1) is reacted with a halogenating agent to produce a 2-azaadamantane carbamate compound represented by the formula (2), and the 2-azaadamantane carbamate compound is subjected to hydrogenolysis to produce a 2-azaadamantane compound represented by the formula (3) (in the formulae, R1 is hydrogen or the like, each of R2 and R3 which are independent of each other, is a hydrogen atom or a C1-6 alkyl group, Ar is an aryl group which may be substituted by Ra, Ra is halogen or the like, X is a halogen atom, and Y is X or a hydrogen atom).
    Type: Application
    Filed: April 23, 2010
    Publication date: March 1, 2012
    Applicant: Nissan Chemical Industries, Ltd.
    Inventors: Masami Kozawa, Yuki Endo
  • Publication number: 20100311977
    Abstract: To provide a method whereby a 2-azaadamantane can easily be obtained in good yield. A method for producing a 2-azaadamantane represented by the formula (1), which comprises cyclizing a compound represented by the following formula (2) in the presence of an acid.
    Type: Application
    Filed: November 20, 2008
    Publication date: December 9, 2010
    Applicants: Nissan Chemical Industries, Ltd., Tohoku Techno Arch Co., Ltd.
    Inventors: Toshimasa Hamada, Noriaki Nagahama, Masami Kozawa, Yoshiharu Iwabuchi, Masatoshi Shibuya, Masaki Tomizawa, Yusuke Sasano
  • Patent number: 7807846
    Abstract: There is provided a method for producing a succinimide compound. The method for producing a succinimide compound of formula (3) comprises reacting an aminomalonic ester compound of formula (1) with a compound of formula (2) in a solvent in the presence of a base, wherein an alcohol is used as the solvent and an alkali metal alkoxide is used as the base. (where R1 and R4 independently represent an alkyl group having 1 to 12 carbon atom(s) which may be a straight chain, branched or cyclic, etc., R2 and R3 independently represent a hydrogen atom, etc., R5 represents an alkyl group having 1 to 12 carbon atom(s) which may be straight chain, branched or cyclic, etc.).
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: October 5, 2010
    Assignees: Nissan Chemical Industries, Ltd., DaiNippon Sumitomo Pharma Co., Ltd.
    Inventors: Masami Kozawa, Hideki Musashi
  • Publication number: 20100004464
    Abstract: There is provided a method for producing a succinimide compound. The method for producing a succinimide compound of formula (3) comprises reacting an aminomalonic ester compound of formula (1) with a compound of formula (2) in a solvent in the presence of a base, wherein an alcohol is used as the solvent and an alkali metal alkoxide is used as the base. (where R1 and R4 independently represent an alkyl group having 1 to 12 carbon atom(s) which may be a straight chain, branched or cyclic, etc., R2 and R3 independently represent a hydrogen atom, etc., R5 represents an alkyl group having 1 to 12 carbon atom(s) which may be straight chain, branched or cyclic, etc.
    Type: Application
    Filed: September 26, 2007
    Publication date: January 7, 2010
    Applicants: NISSAN CHEMICAL INDUSTRIES, LTD., DAINIPPON SUMITOMO PHARMA CO., LTD.
    Inventors: Masami Kozawa, Hideki Musashi
  • Patent number: 7038056
    Abstract: A method for preparing a 7-quinolynyl-3,5-dihydroxyhept-6-enoate useful as an intermediate for pharmaceuticals, in high yield and in high purity, is presented. It is a method for preparing a 7-quinolinyl-3,5-dihydroxyhept-6-enoate represented by the formula (IV): (wherein R represents an alkyl group or an aryl group), characterized in that a compound represented by the formula (I): (wherein R is as defined above), or a compound represented by the formula (II): (wherein R is as defined above), is reduced by sodium borohydride in the presence of a boron compound represented by the formula (III): R?OBR?2??(III) (wherein R? and R? represent independently an alkyl group), and then the resultant reaction mixture is treated with an aqueous solution of hydrogen peroxide.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: May 2, 2006
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Kenichi Tokunaga, Masami Kozawa, Kenji Suzuki
  • Publication number: 20050014947
    Abstract: A method for preparing a 7-quinolynyl-3,5-dihydroxyhept-6-enoate useful as an intermediate for pharmaceuticals, in high yield and in high purity, is presented. It is a method for preparing a 7-quinolinyl-3,5-dihydroxyhept-6-enoate represented by the formula (IV): (wherein R represents an alkyl group or an aryl group), characterized in that a compound represented by the formula (I): (wherein R is as defined above), or a compound represented by the formula (II): (wherein R is as defined above), is reduced by sodium borohydride in the presence of a boron compound represented by the formula (III): R?OBR?2??(III) (wherein R? and R? represent independently an alkyl group), and then the resultant reaction mixture is treated with an aqueous solution of hydrogen peroxide.
    Type: Application
    Filed: March 22, 2002
    Publication date: January 20, 2005
    Inventors: Kenichi Tokunaga, Masami Kozawa, Kenji Suzuki
  • Patent number: 6476278
    Abstract: Alcohols are produced in a practical and advantageous method, by the hydrogenation of a carbonyl compound under mild conditions, by reacting the carbonyl compounds with hydrogen in the presence of a bipyridyl derivative, a group VIII transition metal complex, and a base, or by reducing a carbonyl compound in the presence of a bipyridyl derivative, a group VIII transition metal complex, a base, and an alcoholic solvent.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: November 5, 2002
    Assignees: Japan Science and Technology Corporation, Takasago International Corporation
    Inventors: Hideyuki Ikehira, Kunihiko Murata, Eiji Katayama, Masami Kozawa, Toru Yokozawa, Takeshi Ohkuma, Takao Ikariya, Ryoji Noyori
  • Patent number: 6340762
    Abstract: A method for producing an optically active piperidine carboxylic acid derivative, which comprises subjecting a piperidine carboxylic acid derivative of the formula (1): wherein Z is a protecting group for the carboxyl group, to optical resolution by means of an optical resolution agent of the formula (2): wherein symbol * indicates that the designated carbon atom is asymmetric.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: January 22, 2002
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Isao Hashiba, Masami Kozawa, Kiyotomo Seto
  • Publication number: 20010037027
    Abstract: A method for producing an optically active piperidine carboxylic acid derivative, which comprises subjecting a piperidine carboxylic acid derivative of the formula (1): 1
    Type: Application
    Filed: March 12, 2001
    Publication date: November 1, 2001
    Applicant: Nissan Chemical Industries, Ltd.
    Inventors: Isao Hashiba, Masami Kozawa, Kiyotomo Seto