Patents by Inventor Naoya UESHIMA

Naoya UESHIMA 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).

  • Production method for halogenated alpha-fluoroethers
    Patent number: 10882809
    Abstract: A halogenated ?-fluoroether of the formula (2) (where HaloR represents haloalkyl; R1 represents hydrogen, halogen, alkyl or substituted alkyl; and R2 represents alkyl or substituted alkyl) is produced efficiently on an industrial scale by reacting a halogenated aldehyde of the formula (1) (where HaloR represents haloalkyl) or an equivalent thereof with hydrogen fluoride.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: January 5, 2021
    Assignee: Central Glass Company, Limited
    Inventors: Kenji Hosoi, Naoya Ueshima
  • Production method for 1,2,2,2-tetrafluoroethyl difluoromethyl ether (desflurane)
    Patent number: 10683252
    Abstract: Fluoral is obtained by gas-phase fluorination of chloral in the presence of a catalyst and then reacted with trimethyl orthoformate, thereby readily forming 1,2,2,2-tetrafluoroethyl methyl ether as an intermediate for production of desflurane. 1,2,2,2-Tetrafluoroethyl difluoromethyl ether (desflurane) is produced with high yield from the thus-formed 1,2,2,2-tetrafluoroethyl methyl ether by chlorination and fluorination. This method enables efficient industrial-scale production of desflurane useful as an inhalation anesthetic.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: June 16, 2020
    Assignee: Central Glass Company, Limited
    Inventors: Kenji Hosoi, Mineo Watanabe, Hideaki Imura, Kensuke Hirotaki, Naoya Ueshima
  • Production Method for Halogenated Alpha-Fluoroethers
    Publication number: 20190352246
    Abstract: A halogenated ca-fluoroether of the formula (2) (where HaloR represents haloalkyl; R1 represents hydrogen, halogen, alkyl or substituted alkyl; and R2 represents alkyl or substituted alkyl) is produced efficiently on an industrial scale by reacting a halogenated aldehyde of the formula (1) (where HaloR represents haloalkyl) or an equivalent thereof with hydrogen fluoride.
    Type: Application
    Filed: December 15, 2017
    Publication date: November 21, 2019
    Inventors: Kenji HOSOI, Naoya UESHIMA
  • Production Method for 1,2,2,2-Tetrafluoroethyl Difluoromethyl Ether (Desflurane)
    Publication number: 20190345086
    Abstract: Fluoral is obtained by gas-phase fluorination of chloral in the presence of a catalyst and then reacted with trimethyl orthoformate, thereby readily forming 1,2,2,2-tetrafluoroethyl methyl ether as an intermediate for production of desflurane. 1,2,2,2-Tetrafluoroethyl difluoromethyl ether (desflurane) is produced with high yield from the thus-formed 1,2,2,2-tetrafluoroethyl methyl ether by chlorination and fluorination.
    Type: Application
    Filed: December 12, 2017
    Publication date: November 14, 2019
    Inventors: Kenji HOSOI, Mineo WATANABE, Hideaki IMURA, Kensuke HIROTAKI, Naoya UESHIMA