Patents by Inventor Ritoko Ikeda

Ritoko Ikeda 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 preparing unsaturated carboxylic acid ester
    Patent number: 5068399
    Abstract: Disclosed is a process for preparing, .alpha., .beta.-unsaturated carboxylic acid ester from .alpha.-hydroxycarboxylic acid ester, a .alpha.-alkoxycarboxylic acid ester or .beta.-alkoxycarboxylic acid ester as a starting material by a vapor-phase catalytic reaction in the presence of a crystalline aluminosilicate modified with an alkali metal and a platinum group element as a catalyst.According to the process, .alpha., .beta.-unsaturated carboxylic acid can be produced efficiently.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: November 26, 1991
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Susumu Naito, Takao Kouzai, Ritoko Ikeda