Patents by Inventor James R. Tretter

James R. Tretter 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).

  • 2-Phenyl-6-(1-hydroxy-2-t-butylaminoethyl)-4H-pyrido[3,2-d]-1,3-dioxin maleate and its use as an intermediate
    Patent number: 4011231
    Abstract: The maleic acid salt of 2-phenyl-6-(1-hydroxy-2-t-butylaminoethyl)-4H-pyrido[3,2-d]-1,3-dioxin, its preparation and use as an intermediate for making 2-hydroxymethyl-3-hydroxy-6-(1-hydroxy-2-t-butylaminoethyl)pyridine, an effective bronchodilator.
    Type: Grant
    Filed: October 3, 1975
    Date of Patent: March 8, 1977
    Assignee: Pfizer Inc.
    Inventors: Ronnie D. Carroll, Bernard S. Moore, James R. Tretter
  • 5-Aryl-1,2,3,4-tetrahydro-.gamma.-carbolines
    Patent number: 4001263
    Abstract: 2-Substituted-5-aryl-1,2,3,4-tetrahydro-.gamma.-carbolines, their use as tranquilizing agents and the preparation thereof from 5-aryl-1,2,3,4-tetrahydro-.gamma.-carbolines.
    Type: Grant
    Filed: April 9, 1975
    Date of Patent: January 4, 1977
    Assignee: Pfizer Inc.
    Inventors: Jacob J. Plattner, Charles A. Harbert, James R. Tretter