Patents by Inventor Mai Hirai

Mai Hirai 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: 20210070679
    Abstract: A process for producing one or both of tetrafluoroethylene and hexafluoropropylene, which includes pyrolyzing a low molecular weight fluorine compound by continuous reaction in a microreactor.
    Type: Application
    Filed: November 16, 2020
    Publication date: March 11, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Toshihiko OHTA, Hideki Nakaya, Mai Hirai, Takashi Yasuhara, Atsushi Noguchi
  • Patent number: 9169225
    Abstract: The present invention provides a novel method for producing hexafluoropropylene oxide, which can attain a high HFPO selectivity without using a phase transfer catalyst. Hexafluoropropylene (HFP), a water-soluble and aprotic organic solvent, and an aqueous solution of an oxidizing agent are introduced into a small space, thereby bringing into contact with each other and reacting hexafluoropropylene with the oxidizing agent to obtain hexafluoropropylene oxide (HFPO).
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: October 27, 2015
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuyoshi Ichihara, Hideki Nakaya, Mai Hirai, Yasuhide Senba
  • Publication number: 20120016142
    Abstract: The present invention provides a novel method for producing hexafluoropropylene oxide, which can attain a high HFPO selectivity without using a phase transfer catalyst. Hexafluoropropylene (HFP), a water-soluble and aprotic organic solvent, and an aqueous solution of an oxidizing agent are introduced into a small space, thereby bringing into contact with each other and reacting hexafluoropropylene with the oxidizing agent to obtain hexafluoropropylene oxide (HFPO).
    Type: Application
    Filed: March 9, 2010
    Publication date: January 19, 2012
    Inventors: Kazuyoshi Ichihara, Hideki Nakaya, Mai Hirai, Yasuhide Senba