Patents by Inventor Kiyoshi Kogoma

Kiyoshi Kogoma 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 producing ether compounds
    Patent number: 4579980
    Abstract: An ether compound is advantageously produced by an ether exchange reaction of a different ether compound and a hydroxy group containing compound in the presence of a heteropoly acid or an acidic salt thereof as the catalyst. The catalyst is novel and is extremely effective to the present process and brings about less by-products compared to other processes or other catalysts.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: April 1, 1986
    Assignee: Nippon Soda Co. Ltd.
    Inventors: Kiyoshi Kogoma, Norio Sone, Takashi Tobita, Masahiro Shiozaki
  • Process for the production of ethers
    Patent number: 4391994
    Abstract: Oxyalkylene group of an alkylene oxide is inserted into a chain-type ether compound having at least one lower alkyl group by reacting the latter with the alkylene oxide in the presence of a catalyst prepared by mixing boron trifluoride and/or stannic chloride with an active-hydrogen compound exemplified by water or a lower aliphatic alcohol. The reaction results reduced formation of by-product dimer of the alkylene oxide even under an increased charging ratio of the alkylene oxide to the chain-type ether.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: July 5, 1983
    Assignee: Nisso Petrochemical Industrie Co., Ltd.
    Inventors: Kiyoshi Kogoma, Yu Ohashi, Jiro Niizeki, Norio Sone, Takashi Tobita