Patents by Inventor James A. Grattan

James A. Grattan 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 preparation of folic acid derivatives
    Patent number: 4337339
    Abstract: Folic acid derivatives, such as radiolabeled pteroyltyrosine, are conveniently synthesized from either pteroic acid or by the direct condensation of 6-formylpterin with p-aminobenzoyltyrosine methyl ester. The radioiodinated derivatives are particularly useful in competitive protein binding and radioimmuno-assays of folate compounds.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: June 29, 1982
    Assignee: Baker Instruments Corp.
    Inventors: Peter R. Farina, James A. Grattan
  • Process for preparation of folic acid derivatives
    Patent number: 4326060
    Abstract: Folic acid derivatives, such as radiolabeled pteroyltyrosine, are conveniently synthesized from either pteroic acid or by the direct condensation of 6-formylpterin with p-aminobenzoyltyrosine methyl ester. The radioiodinated derivatives are particularly useful in competitive protein binding and radioimmuno-assays of folate compounds.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: April 20, 1982
    Assignee: Baker Instruments Corporation
    Inventors: Peter R. Farina, James A. Grattan
  • Folic acid derivatives and process for preparation
    Patent number: 4314988
    Abstract: Folic acid derivatives, such as radiolabeled pteroyltyrosine, are conveniently synthesized from either pteroic acid or by the direct condensation of 6-formylpterin with p-aminobenzoyltyrosine methyl ester. The radioiodinated derivatives are particularly useful in competitive protein binding and radioimmuno-assays of folate compounds.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: February 9, 1982
    Assignee: Baker Instruments Corp.
    Inventors: Peter R. Farina, James A. Grattan
  • Folic acid derivatives
    Patent number: 4298735
    Abstract: Folic acid derivatives, such as radiolabeled pteroyltyrosine, are conveniently synthesized from either pteroic acid or by the direct condensation of 6-formylpterin with p-aminobenzoyltyrosine methyl ester. The radioiodinated derivatives are particularly useful in competitive protein binding and radioimmuno-assays of folate compounds.
    Type: Grant
    Filed: April 30, 1979
    Date of Patent: November 3, 1981
    Assignee: Union Carbide Corporation
    Inventors: Peter R. Farina, James A. Grattan