Patents by Inventor Eiji Ozaki

Eiji Ozaki 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).

  • Esterase genes, esterase, recombinant plasmids and transformants containing the recombinant plasmid and methods of producing optically acitve carboxylic acids and their enantiomeric esters using said transformants
    Patent number: 5308765
    Abstract: The present invention relates to a DNA fragment containing a nucleotide sequence that encodes an amino acid sequence of esterase, said esterase asymmetrically hydrolyzing carboxylic acid esters represented by the formula (I); ##STR1## (wherein R.sub.1 is alkyl, aralkyl or aryl, R.sub.2 and R.sub.3 are alkyl, and n is 1 or 2) an esterase encoded by the DNA fragment, a recombinant plasmid containing the DNA fragment, a microorganism transformed with the recombinant plasmid and methods of producing optically active carboxylic acids and their enantiomeric esters.
    Type: Grant
    Filed: May 13, 1992
    Date of Patent: May 3, 1994
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Eiji Ozaki, Akihiro Sakimae, Ryozo Numazawa
  • Process for racemizing optically active carboxylic acid esters
    Patent number: 5149855
    Abstract: Process for racemizing an optically active carboxylic acid ester of the formula (1): ##STR1## wherein R.sub.1 is alkyl, aralkyl or aryl, R.sub.2 and R.sub.3 independently are alkyl, and n is 1 or 2, which comprises contacting the compound of the formula (1) with an amine compound.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: September 22, 1992
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Akihiro Sakimae, Eiji Ozaki, Kanehiko Enomoto, Ryozo Numazawa, Yoshimasa Kobayashi