Patents by Inventor Kenichi Yamaseki

Kenichi Yamaseki 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 the preparation of acetic acid
    Patent number: 5663429
    Abstract: A process for preparing acetic acid from methanol and carbon monoxide or a mixed gas of carbon monoxide with hydrogen, which process comprises contacting methanol with a gaseous component selected from a group consisting of carbon monoxide and a mixed gas of carbon monoxide with hydrogen of 2% by volume or less in the presence of a carbon-supported rhodium metal catalyst and methyl iodide promoter in vapor phase under the conditions of a reaction temperature of 180.degree.-220.degree. C., a reaction pressure of 5-10 kg/cm.sup.2 .multidot.G, and a weight of catalyst to feed gas flow rate ratio (W/F) of 10-20 g.multidot.h/mole; and a process for preparing acetic acid from methanol and carbon monoxide, which process comprises contacting methanol with carbon monoxide in the presence of a carbon-supported rhodium metal catalyst, methyl iodide promoter and water in vapor phase.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: September 2, 1997
    Assignee: Tokyo Gas Company, Ltd.
    Inventors: Kenichi Yamaseki, Yasuo Konishi, Hiroshi Uchida
  • Process for the preparation of acetic acid
    Patent number: 5510523
    Abstract: A process for preparing acetic acid from methanol and carbon monoxide or a mixed gas of carbon monoxide with hydrogen, which process comprises contacting methanol with a gaseous component selected from a group consisting of carbon monoxide and a mixed gas of carbon monoxide with hydrogen of 2% by volume or less in the presence of a carbon-supported rhodium metal catalyst and methyl iodide promoter in vapor phase under the conditions of a reaction temperature of 180.degree.-220.degree. C., a reaction pressure of 5-10 kg/cm.sup.2 .multidot.G, and a weight of catalyst to feed gas flow rate ratio (W/F) of 10-20 g.multidot.h/mole; and a process for preparing acetic acid from methanol and carbon monoxide, which process comprises contacting methanol with carbon monoxide in the presence of a carbon-supported rhodium metal catalyst, methyl iodide promoter and water in vapor phase.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: April 23, 1996
    Assignee: Tokyo Gas Company, Limited
    Inventors: Kenichi Yamaseki, Yasuo Konishi, Hiroshi Uchida