Patents by Inventor TIENAN JIN

TIENAN JIN 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: 20200262790
    Abstract: Pharmaceutical and chemical intermediates and relevant chemicals, and relates to a novel preparation method of N-substituted dibenzo[a,c]carbazole compound. O-alkynylaniline and derivatives thereof as raw materials conduct a cascade cyclization reaction in an anhydrous organic solvent in the presence of catalysts, oxidants and additives, and are converted into the N-substituted dibenzo[a,c]carbazole compound. The preparation method of the N-substituted dibenzo[a,c]carbazole compound has fewer reaction steps, low cost of raw material, mild reaction conditions and convenient operation. Moreover, the obtained product has high yield and high purity, fully meets the quality requirements for drug intermediates, and provides favorable conditions for the industrial production.
    Type: Application
    Filed: June 7, 2018
    Publication date: August 20, 2020
    Inventors: Sheng ZHANG, Hengmin MA, Tienan JIN, Ming BAO
  • Publication number: 20200095209
    Abstract: This method for producing a fullerene derivative is a method for producing a fullerene derivative having a partial structure shown by formula (1) by reacting a predetermined halogenated compound and two carbon atoms adjacent to each other for forming a fullerene skeleton in a mixed solvent of an aromatic solvent and an aprotic polar solvent having a C?O or S?O bond in the presence of at least one metal selected from the group comprising manganese, iron, and zinc; (in formula (1), C* are each carbon atoms adjacent to each other for forming a fullerene skeleton, A is a linking group having 1-4 carbon atoms for forming a ring structure with two C*, in which a portion thereof may be a substituted or condensed group).
    Type: Application
    Filed: November 12, 2019
    Publication date: March 26, 2020
    Applicant: Showa Denko K.K.
    Inventors: Tienan Jin, Weili Si, Yoshinori Yamamoto, Takeshi Igarashi
  • Patent number: 10526293
    Abstract: This method for producing a fullerene derivative is a method for producing a fullerene derivative having a partial structure shown by formula (1) by reacting a predetermined halogenated compound and two carbon atoms adjacent to each other for forming a fullerene skeleton in a mixed solvent of an aromatic solvent and an aprotic polar solvent having a C?O or S?O bond in the presence of at least one metal selected from the group comprising manganese, iron, and zinc; (in formula (1), C* are each carbon atoms adjacent to each other for forming a fullerene skeleton, A is a linking group having 1-4 carbon atoms for forming a ring structure with two C*, in which a portion thereof may be a substituted or condensed group).
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: January 7, 2020
    Assignees: SHOWA DENKO K.K., MITSUBISHI CORPORATION
    Inventors: Tienan Jin, Weili Si, Yoshinori Yamamoto, Takeshi Igarashi
  • Publication number: 20170253567
    Abstract: This method for producing a fullerene derivative is a method for producing a fullerene derivative having a partial structure shown by formula (1) by reacting a predetermined halogenated compound and two carbon atoms adjacent to each other for forming a fullerene skeleton in a mixed solvent of an aromatic solvent and an aprotic polar solvent having a C?O or S?O bond in the presence of at least one metal selected from the group comprising manganese, iron, and zinc; (in formula (1), C* are each carbon atoms adjacent to each other for forming a fullerene skeleton, A is a linking group having 1-4 carbon atoms for forming a ring structure with two C*, in which a portion thereof may be a substituted or condensed group).
    Type: Application
    Filed: September 4, 2015
    Publication date: September 7, 2017
    Applicant: SHOWA DENKO K.K.
    Inventors: Tienan JIN, Weili SI, Yoshinori YAMAMOTO, Takeshi IGARASHI
  • Patent number: 9246104
    Abstract: A fullerene derivative represented by the following formula (1): wherein “FLN” represents a fullerene core, R1 represents an optionally substituted C1-C24 alkyl group or an optionally substituted C7-C24 aralkyl group, R2 and R3 independently represent a hydrogen atom or an optionally substituted C1-C24 hydrocarbon group but excluding a case where both of R2 and R3 are hydrogen atoms, and R2 and R3 may combine together to form a ring.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: January 26, 2016
    Assignees: SHOWA DENKO K.K., Tohoku University
    Inventors: Tienan Jin, Weili Si, Yoshinori Yamamoto, Takeshi Igarashi
  • Patent number: 9238614
    Abstract: Disclosed is a fullerene derivative represented by the following formula (1): wherein FLN is a fullerene backbone, R1 is a substituted or non-substituted alkyl group with a carbon number less than or equal to 24, and Ar1 is a substituted or non-substituted aryl group with a carbon number less than or equal to 24.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: January 19, 2016
    Assignees: SHOWA DENKO K.K., Tohoku University
    Inventors: Tienan Jin, Weili Si, Yoshinori Yamamoto, Takeshi Igarashi
  • Publication number: 20150376110
    Abstract: Disclosed is a fullerene derivative represented by the following formula (1): wherein FLN is a fullerene backbone, R1 is a substituted or non-substituted alkyl group with a carbon number less than or equal to 24, and Ar1 is a substituted or non-substituted aryl group with a carbon number less than or equal to 24.
    Type: Application
    Filed: June 26, 2014
    Publication date: December 31, 2015
    Inventors: Tienan JIN, Weili SI, Yoshinori YAMAMOTO, Takeshi IGARASHI
  • Publication number: 20150083223
    Abstract: A fullerene derivative represented by the following formula (1): wherein “FLN” represents a fullerene core, R1 represents an optionally substituted C1-C24 alkyl group or an optionally substituted C7-C24 aralkyl group, R2 and R3 independently represent a hydrogen atom or an optionally substituted C1-C24 hydrocarbon group but excluding a case where both of R2 and R3 are hydrogen atoms, and R2 and R3 may combine together to form a ring.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 26, 2015
    Applicants: Tohoku University, Showa Denko K.K.
    Inventors: Tienan JIN, Weili Si, Yoshinori Yamamoto, Takeshi Igarashi
  • Publication number: 20030091541
    Abstract: This invention provides a novel immunotolerance inducer which is effective in inducing immunological tolerance without involving any remarkable invasive procedure, thus ensuring the maintenance of a transplanted organ without administration of an immunosuppressant drug.
    Type: Application
    Filed: September 7, 1999
    Publication date: May 15, 2003
    Inventors: SUSUMU IKEHARA, KIKUYA SUGIURA, TIENAN JIN, HARUO MORITA, SHINJI SOGO, KAZUYA YAMANISHI, MASAKAZU ADACHI