Patents by Inventor John E. Heveran

John E. Heveran 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).

  • Radioimmunoassay for cannabinoids
    Patent number: 4438207
    Abstract: An improved immunoassay for detecting cannabinoids is described. This immunoassay is characterized by utilizing, as reagents, antibody, .sup.125 I-radiolabeled antigen, an unlabeled antigen and an anion exchange resin for separation of labeled and unlabeled antigen. The iodinated tetrahydrocannabinol moiety is stabilized by the addition of small quantities of antioxidants such as butylated hydroxy toluene.
    Type: Grant
    Filed: April 13, 1981
    Date of Patent: March 20, 1984
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Kenneth E. Fahrenholtz, John E. Heveran
  • Diagnostic test for barbiturates
    Patent number: 4340736
    Abstract: Aminoaryl esters and amino-lower alkyl amides of carboxy substituted barbiturates are linked via an amide linkage to carboxylated latex polymers to form reagents which are useful in a sensitive diagnostic test to detect the presence of barbiturates in body fluids.
    Type: Grant
    Filed: December 5, 1979
    Date of Patent: July 20, 1982
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Antonino Focella, John E. Heveran, Sidney Teitel, Manfred Weigele
  • Immunoassay for phencyclidine
    Patent number: 4196185
    Abstract: An improved immunoassay for detecting the drug of abuse phencyclidine is described. This immunoassay is characterized in utilizing as reagents (i) an antibody elicited with a novel immunogen comprising 4-[(1-piperidinyl)cyclohexyl] benzoic acid covalently bonded to an immunogenic carrier material through the carboxyl group and (ii) a novel radiolabeled derivative of phencyclidine, namely .sup.125 I N-(4-hydroxy-2-phenylethyl)-4-[1-(1-piperidinyl)cyclohexyl] benzamide.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: April 1, 1980
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Antonino Focella, John E. Heveran