Patents by Inventor Chac-Chou Tu

Chac-Chou Tu 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 1,4-BIS(DIFLUOROMETHYL)TETRAFLUOROBENZENE
    Publication number: 20090171132
    Abstract: A method for producing 1,4-bis(difluoromethyl)tetrafluorobenzene is disclosed, which has the following steps: (a) mixing 1,4-bis(dichloromethyl)tetrafluorobenzene, a catalyst, an aprotic polar solvent, and an alkali metal fluoride to form a reaction mixture; (b) heating the reaction mixture; and (c) purifying the resultant to obtain 1,4-bis(difluoromethyl)tetrafluorobenzene.
    Type: Application
    Filed: July 29, 2008
    Publication date: July 2, 2009
    Applicants: Yuan-Shin Materials Technology Corp., Chung-shan Institute of Science and Technology. Armaments Bureau. M.N.D.
    Inventors: Chun-Hsu Lin, Chac-Chou Tu, Chan-Yuan Ho, Chuan-Yu Chou, Wei-Hsiung Ou, Shieh-Jun Wang
  • Method for producing 1,4-bis(difluoromethyl)tetrafluorobenzene
    Patent number: 7544846
    Abstract: A method for producing 1,4-bis(difluoromethyl)tetrafluorobenzene is disclosed, which has the following steps: (a) mixing 1,4-bis(dichloromethyl)tetrafluorobenzene, a catalyst, an aprotic polar solvent, and an alkali metal fluoride to form a reaction mixture; (b) heating the reaction mixture; and (c) purifying the resultant to obtain 1,4-bis(difluoromethyl)tetrafluorobenzene.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: June 9, 2009
    Assignees: Yuan-Shin Materials Technology Corp., Chung-Shan Institute of Science and Technology, Armaments Bureau, M.N.D.
    Inventors: Chun-Hsu Lin, Chac-Chou Tu, Chan-Yuan Ho, Chuan-Yu Chou, Wei-Hsiung Ou, Shieh-Jun Wang