Patents by Inventor Eisaku Yamato

Eisaku Yamato 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 a hydroxyphenylglycine compound
    Patent number: 4175206
    Abstract: Glyoxylic acid or a salt of glyoxylic, an ammonium salt of an organic or inorganic acid and a phenol compound of the formula: ##STR1## wherein n is an integer of one to three, are condensed together to prepare hydroxyphenylglycine compounds of the formula: ##STR2## wherein n is the same as defined above. The hydroxyphenylglycine compounds thus obtained are useful as intermediates in the synthesis of penicillins and cephalosporins.
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: November 20, 1979
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Masaru Senuma, Nobuhiko Ishihara, Shigeru Nishimoto, Eisaku Yamato, Noboru Shigematsu