Patents by Inventor C. Frederick M. Huntley

C. Frederick M. 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: 10835528
    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: November 17, 2020
    Assignee: Rhodes Technologies
    Inventors: C. Frederick M. Huntley, Erik Wayne Kataisto, Helge Alfred Reisch, Archana Sharma
  • Acetate salt of buprenorphine and methods for preparing buprenorphine
    Patent number: 10406152
    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: March 9, 2016
    Date of Patent: September 10, 2019
    Assignee: RHODES TECHNOLOGIES
    Inventors: C. Frederick M. Huntley, Erik Wayne Kataisto, Helge Alfred Reisch, Archana Sharma
  • Acetate salt of buprenorphine and methods for preparing buprenorphine
    Patent number: 10278967
    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: February 12, 2018
    Date of Patent: May 7, 2019
    Assignee: Rhodes Technologies
    Inventors: C. Frederick M. Huntley, Erik Wayne Kataisto, Helge Alfred Reisch, Archana Sharma
  • Acetate salt of buprenorphine and methods for preparing buprenorphine
    Patent number: 9926329
    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: March 1, 2017
    Date of Patent: March 27, 2018
    Assignee: Rhodes Technologies
    Inventors: C. Frederick M. Huntley, Erik Wayne Kataisto, Helge Alfred Reisch, Archana Sharma
  • Low-temperature synthesis of methylphenidate hydrochloride
    Patent number: 9475770
    Abstract: The present invention describes a process for the preparation of methylphenidate hydrochloride. The process involves the esterification of ritalinic acid and methanol in the presence of an acid catalyst at a low temperature. The process may optionally involve the addition of an orthoester.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: October 25, 2016
    Assignee: Rhodes Technologies
    Inventors: C. Frederick M. Huntley, Erik Wayne Kataisto, Knicholaus Dudley La Lumiere, Helge Alfred Reisch
  • Low-Temperature Synthesis of Methylphenidate Hydrochloride
    Publication number: 20150038720
    Abstract: The present invention describes a process for the preparation of methylphenidate hydrochloride. The process involves the esterification of ritalinic acid and methanol in the presence of an acid catalyst at a low temperature. The process may optionally involve the addition of an orthoester.
    Type: Application
    Filed: December 16, 2011
    Publication date: February 5, 2015
    Applicant: Rhodes Technologies
    Inventors: C. Frederick M. Huntley, Erik Wayne Kataisto, Knicholaus Dudley La Lumiere, Helge Alfred Reisch
  • Guitar repair tool
    Patent number: 5994636
    Abstract: Clamping tool especially suitable for guitar repair which can be inserted into the sound hole of a guitar, with tensioning means spaced from the point at which force is applied to the instrument.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: November 30, 1999
    Inventor: C. Frederick M. Huntley