Patents by Inventor Katuyoshi Asano

Katuyoshi Asano 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).

  • Method for preparing ethylene glycol and/or propylene glycol
    Patent number: 4937393
    Abstract: In the manufacturing method of ethylene glycol and/or propylene glycol, these glycols can be prepared with a highly selectivity and at a high yield by applying the catalyst comprising a carboxylic acid and a carboxylic acid salt or a metal salt of formic acid alone.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: June 26, 1990
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Takayoshi Masuda, Katuyoshi Asano, Naomi Hori, Shinji Ando