Patents by Inventor Tadashi Tayanagi

Tadashi Tayanagi 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 producing diphenylmethane
    Patent number: 5877362
    Abstract: A method for producing diphenylmethane from 1,1-diphenylethane with a high yield and selectivity, wherein the 1,1-diphenylethane is reacted with hydrogen and/or water.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: March 2, 1999
    Assignee: Nippon Petrochemicals Company, Limited
    Inventors: Hideyuki Dohi, Kazuo Sakamoto, Tadashi Tayanagi