Patents by Inventor Roberta K. Yoshida

Roberta K. Yoshida 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).

  • Phenylalainine ammonia lyase polypeptide and polynucleotide sequences and methods of obtaining and using same
    Patent number: 6967097
    Abstract: The present provides a Rhodotorula phenylalanine lyase polypeptide, polynucleotides that encode the polypeptide, and methods of obtaining and using these products. In particular the polypeptide can be employed for the production of phenylalanine, phenylalanine analogs, and optically active unnatural amino acids having phenylalanine-like structures.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: November 22, 2005
    Assignee: PCBU Services, Inc.
    Inventors: Roberta K. Yoshida, Anna B. Kootstra
  • Phenylalanine ammonia lyase polypeptide and polynucleotide sequences and methods of obtaining and using same
    Publication number: 20020102712
    Abstract: The present provides a Rhodotorula phenylalanine lyase polypeptide, polynucleotides that encode the polypeptide, and methods of obtaining and using these products. In particular the polypeptide can be employed for the production of phenylalanine, phenylalanine analogs, and optically active unnatural amino acids having phenylalanine-like structures.
    Type: Application
    Filed: August 24, 2001
    Publication date: August 1, 2002
    Applicant: PCBU Services, Inc.
    Inventors: Roberta K. Yoshida, Anna B. Kootstra
  • Materials and methods for the production of D-phenylalanine
    Patent number: 6358714
    Abstract: The present invention provides materials and methods for production of D-phenylalanine by recombinant expression in a microorganisms of a D-aminotransferase gene and optionally a dadX gene in optional combination with eliminating or reducing expression of L-transaminase genes.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: March 19, 2002
    Assignee: The Nutrasweet Company
    Inventors: Ian Fotheringham, Paul P. Taylor, Roberta K. Yoshida
  • Phenylalanine ammonia lyase polypeptide and polynucleotide sequences and methods of obtaining and using same
    Patent number: 6355468
    Abstract: The present provides a Rhodotorula phenylalanine lyase polypeptide, polynucleotides that encode the polypeptide, and methods of obtaining and using these products. In particular the polypeptide can be employed for the production of phenylalanine, phenylalanine analogs, and optically active unnatural amino acids having phenylalanine-like structures.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: March 12, 2002
    Assignee: PCBU Services, Inc.,
    Inventors: Roberta K. Yoshida, Anna B. Kootstra