Patents by Inventor C. Frederick Huntley

C. Frederick Huntley 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).

  • Acetate salt of buprenorphine and methods for preparing buprenorphine
    Patent number: 10874662
    Abstract: The present disclosure provides acetate salts of buprenorphine, and its anhydrates, solvates, hydrates, and crystalline forms thereof, where the acetate salts of buprenorphine are essentially free of impurities. The disclosure further provides method of preparing the acetate salts, buprenorphine free base prepared from the acetate salts, other salts prepared from the free base, and pharmaceutical compositions thereof essentially free of impurities.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: December 29, 2020
    Assignee: Rhodes Technologies
    Inventors: C. Frederick Huntley, Erik Wayne Kataisto, Helge Alfred Reisch, Archana Sharma