Patents by Inventor Toshihisa Sakurai

Toshihisa Sakurai 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).

  • Process for purifying a fluorine compound
    Patent number: 8232436
    Abstract: Provided is a process for purifying a fluorine compound capable of yielding a highly pure fluorine compound by removing at least oxygen from a fluorine compound containing an oxygen compound as an impurity. In a process according to the present invention for purifying a fluorine compound, the following is brought into contact with the fluorine compound, which contains an oxygen compound as an impurity, thereby removing at least oxygen: carbonyl fluoride in an amount of a 0.1-fold equivalent or more and a 100-fold equivalent or less of oxygen atoms in the fluorine compound.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: July 31, 2012
    Assignee: Stella Chemifa Corporation
    Inventors: Masahide Waki, Daisuke Sakai, Toshihisa Sakurai
  • PROCESS FOR PURIFYING A FLUORINE COMPOUND
    Publication number: 20100099931
    Abstract: Provided is a process for purifying a fluorine compound capable of yielding a highly pure fluorine compound by removing at least oxygen from a fluorine compound containing an oxygen compound as an impurity. In a process according to the present invention for purifying a fluorine compound, the following is brought into contact with the fluorine compound, which contains an oxygen compound as an impurity, thereby removing at least oxygen: carbonyl fluoride in an amount of a 0.1-fold equivalent or more and a 100-fold equivalent or less of oxygen atoms in the fluorine compound.
    Type: Application
    Filed: August 29, 2008
    Publication date: April 22, 2010
    Applicant: STELLA CHEMIFA CORPORATION
    Inventors: Masahide Waki, Daisuke Sakai, Toshihisa Sakurai