Patents by Inventor Akira Shibashi

Akira Shibashi 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).

  • Method for producing ester compound and palladium catalyst used in the method
    Patent number: 9403158
    Abstract: A method for producing an ester compound includes reacting a compound having at least one cyclic structure of a norbornene ring and a norbornadiene ring with an alcohol and carbon monoxide by using a palladium catalyst and an oxidizing agent, to thereby introduce ester groups to carbon atoms forming a double bond in the cyclic structure and obtaining the ester compound, wherein the palladium catalyst includes a palladium acetate having a nitrite ligand in an amount of 10% by mole or more in terms of metal, and the palladium acetate having a nitrite ligand is represented by the general formula (1): Pd3(CH3COO)5(NO2).
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: August 2, 2016
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Shinichi Komatsu, Akira Shibashi, Takaya Matsumoto
  • Polyimide and alicyclic tetracarboxylic dianhydride used for producing the same
    Patent number: 9399703
    Abstract: A polyimide containing at least one of repeating units represented by the following general formulae (1) and (2): wherein the formulae (1) and (2), R1, R2, and R3 each independently represents a hydrogen atom or the like, R4 represents an aryl group having 6 to 40 carbon atoms, and n represents an integer of 0 to 12, wherein a total amount of the repeating units represented by the general formulae (1) and (2) is 90% by mole or more relative to all repeating units.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: July 26, 2016
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Shinichi Komatsu, Rieko Fujishiro, Miki Fujiwara, Daisuke Watanabe, Akira Shibashi, Takaya Matsumoto
  • METHOD FOR PRODUCING ESTER COMPOUND AND PALLADIUM CATALYST USED IN THE METHOD
    Publication number: 20150343432
    Abstract: A method for producing an ester compound includes reacting a compound having at least one cyclic structure of a norbornene ring and a norbornadiene ring with an alcohol and carbon monoxide by using a palladium catalyst and an oxidizing agent, to thereby introduce ester groups to carbon atoms forming a double bond in the cyclic structure and obtaining the ester compound, wherein the palladium catalyst includes a palladium acetate having a nitrite ligand in an amount of 10% by mole or more in terms of metal, and the palladium acetate having a nitrite ligand is represented by the general formula (1): Pd3(CH3COO)5(NO2).
    Type: Application
    Filed: September 24, 2013
    Publication date: December 3, 2015
    Applicant: JX NIPPON OIL & ENERGY CORPORTION
    Inventors: Shinichi KOMATSU, Akira SHIBASHI, Takaya MATSUMOTO
  • POLYIMIDE AND ALICYCLIC TETRACARBOXYLIC DIANHYDRIDE USED FOR PRODUCING THE SAME
    Publication number: 20150218317
    Abstract: A polyimide containing at least one of repeating units represented by the following general formulae (1) and (2): wherein the formulae (1) and (2), R1, R2, and R3 each independently represents a hydrogen atom or the like, R4 represents an aryl group having 6 to 40 carbon atoms, and n represents an integer of 0 to 12, wherein a total amount of the repeating units represented by the general formulae (1) and (2) is 90% by mole or more relative to all repeating units.
    Type: Application
    Filed: August 29, 2013
    Publication date: August 6, 2015
    Inventors: Shinichi Komatsu, Rieko Fujishiro, Miki Fujiwara, Daisuke Watanabe, Akira Shibashi, Takaya Matsumoto