Patents by Inventor David Rozzell

David Rozzell 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).

  • Production of L-4-phenyl-2-aminobutanoic acid by transamination
    Patent number: 4525454
    Abstract: A process is described for producing L-4-phenyl-2-amino butanoic acid. The process comprises reacting 4-phenyl-2-oxobutanoic acid or an ester thereof with L-aspartic acid in the presence of transaminase enzyme to produce L-4-phenyl-2-aminobutanoic acid and oxaloacetate, and decarboxylating said oxaloacetate.
    Type: Grant
    Filed: August 23, 1984
    Date of Patent: June 25, 1985
    Assignee: Genetics Institute, Inc.
    Inventor: J. David Rozzell
  • Production of L-amino acids by transamination
    Patent number: 4518692
    Abstract: A process is described for producing alpha amino acids or derivatives thereof. The process comprises reacting an alpha-keto acid with L-aspartic acid in the presence of transaminase enzyme to produce (1) an alpha amino acid corresponding to said alpha-keto acid and (2) oxaloacetate; and decarboxylating said oxaloacetate.
    Type: Grant
    Filed: September 1, 1983
    Date of Patent: May 21, 1985
    Assignee: Genetics Institute, Inc.
    Inventor: J. David Rozzell